WO2017107394A1 - 视频播放进度的预览方法和装置 - Google Patents

视频播放进度的预览方法和装置 Download PDF

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Publication number
WO2017107394A1
WO2017107394A1 PCT/CN2016/084853 CN2016084853W WO2017107394A1 WO 2017107394 A1 WO2017107394 A1 WO 2017107394A1 CN 2016084853 W CN2016084853 W CN 2016084853W WO 2017107394 A1 WO2017107394 A1 WO 2017107394A1
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WIPO (PCT)
Prior art keywords
frame
video
progress
difference value
frames
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Ceased
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PCT/CN2016/084853
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English (en)
French (fr)
Inventor
张银刚
张霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL Digital Technology Co Ltd
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Shenzhen TCL Digital Technology Co Ltd
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Priority to EP16877207.7A priority Critical patent/EP3396967B1/en
Priority to US16/061,488 priority patent/US10893335B2/en
Publication of WO2017107394A1 publication Critical patent/WO2017107394A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44222—Analytics of user selections, e.g. selection of programmes or purchase activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand

Definitions

  • the present invention relates to the field of network video technologies, and in particular, to a method and apparatus for previewing video playback progress.
  • the video playback progress is frequently adjusted.
  • the progress of the network video playing is frequently adjusted, and sometimes the video content that the user is interested in is missed, so that the user has to make repeated adjustments to locate the video content of interest.
  • repeatedly adjusting the progress of the network video playback if the network status is not good, repeatedly loading the video, will be waiting for a long time, resulting in a bad user experience.
  • the main purpose of the present invention is to provide a preview method and device for video playback progress, which aims to realize preview display of a representative video frame, so that the user can quickly locate the video content of interest and meet the user's needs.
  • the present invention provides a preview method for video playback progress, including:
  • the progress segment is a progress position interval between the first progress position of the user from the trigger to the second progress position at the end of the trigger, or
  • the progress segment is a progress position interval between a playback start position of the target video and a second progress position at which the trigger ends;
  • the frame position interval is the first frame position and the second frame position
  • the frame position interval is an interval between the start frame position and the second frame position, wherein the start frame position and the second frame position respectively correspond to a video frame
  • the frame difference value is a difference value between any video frame and an adjacent video frame, and the database stores a frame difference value corresponding to all video frames in the target video;
  • the plurality of video frames corresponding to the preset number of the frame difference values are displayed to the user in a multi-grid preview form or a card-style preview form.
  • the embodiment of the invention further provides a preview method for video playback progress, including:
  • the frame difference value is a difference value between any video frame and an adjacent video frame, and the database stores a frame difference value corresponding to all video frames in the target video;
  • the plurality of video frames corresponding to the preset number of the frame difference values that are found are displayed to the user in a preview form.
  • the embodiment of the invention further provides a preview device for video playback progress, the device comprising:
  • a detecting module configured to detect a user's adjustment of a progress position of the target video, and obtain an adjusted progress segment
  • a matching module configured to match a corresponding frame position interval according to the progress segment
  • a search module configured to search, from a pre-established database, a frame difference value corresponding to each video frame included in the frame position interval, and take a preset number of frames with a larger value from the frame difference value a difference value, where the frame difference value is a difference value between any video frame and an adjacent video frame, where the database stores a frame difference value corresponding to all video frames in the target video;
  • a display module configured to display the plurality of video frames corresponding to the preset number of the frame difference values to the user in a preview form.
  • the invention discloses a preview method and device for video playback progress, which can obtain an adjusted progress segment by detecting a user's adjustment of the progress position of the target video; matching the corresponding frame position interval according to the progress segment; searching from a pre-established database a frame difference value corresponding to each video frame included in the frame position interval, and taking a preset number of frame difference values with a larger value from the frame difference value; corresponding to the preset number of frame difference values
  • Multiple video frames are displayed to the user as a preview. Therefore, the problem that the video content of interest cannot be quickly located in the process of watching the network video in the prior art is solved, and the representative video frame is previewed and displayed, so that the user can quickly locate the sense. Interested video content to meet user needs.
  • FIG. 1 is a schematic flow chart of a first embodiment of a preview method for video playback progress according to the present invention
  • FIG. 2 is a schematic flow chart of a first embodiment of the embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a second embodiment of the embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a second embodiment of a preview method for video playback progress according to the present invention.
  • FIG. 5 is a schematic flowchart of establishing a corresponding database for the target video in the embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of displaying a plurality of video frames corresponding to the preset number of frame difference values in a preview form to a user according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of functional modules of a first embodiment of a preview device for video playback progress of the present invention.
  • FIG. 8 is a schematic diagram of functional modules of a second embodiment of a preview apparatus for video playback progress according to the present invention.
  • the main solution of the embodiment of the present invention is: detecting the adjustment of the progress position of the target video by the user, obtaining the adjusted progress segment; matching the corresponding frame position interval according to the progress segment; and searching for the frame position interval included in the pre-established database. a frame difference value corresponding to each video frame, and taking a preset number of frame difference values with a larger value from the frame difference value; and searching for a plurality of video frames corresponding to the preset number of frame difference values, Display to the user as a preview. Therefore, the problem that the video content of interest cannot be quickly located in the process of watching the network video in the prior art is solved, and the representative video frame is previewed, so that the user can quickly locate the interest. Video content to meet user needs.
  • a first embodiment of the present invention provides a method for previewing a video playback progress, including:
  • step S1 the adjustment of the progress position of the target video by the user is detected, and the adjusted progress segment is obtained.
  • the executor of the method of the present invention may be a data processing device or a server.
  • This embodiment is exemplified by a server, and is of course not limited to other multimedia data processing devices capable of realizing preview of video playback progress.
  • the server detects the adjustment of the progress position of the target video by the user, and obtains the adjusted progress segment.
  • the user can drag the progress progress bar of the target video, and can also adjust the progress position of the target video by pressing a button operation or other operation mode capable of adjusting the playback progress position.
  • the server when detecting the adjustment of the user's progress position on the target video, acquires a progress segment in which the user adjusts the target video playback progress position, and records the progress position before and after the adjustment.
  • the progress segment is the progress position interval between the first progress position of the user from the trigger start to the second progress position at the end of the trigger, or the progress between the play start position of the target video and the second progress position at the end of the trigger. Location interval.
  • step S2 the corresponding frame position interval is matched according to the progress segment.
  • the server After successfully adjusting the adjustment of the progress position of the target video by the user, and obtaining the adjusted progress segment, the server matches the corresponding frame position interval according to the progress segment.
  • the server matches the frame position corresponding to the progress position according to the progress position before and after the adjustment, so as to match the frame position interval corresponding to the progress segment in which the user adjusts the video progress.
  • the implementation manner of matching the corresponding frame position interval according to the progress segment may be:
  • the server may separately record the first progress position as P1 and the second progress position as P2 when detecting that the progress of the user's target video is adjusted from the first progress position to the second progress position;
  • the frame position interval is between the first frame position F1 and the second frame position F2 Interval, for example, the formula for the ratio between the progress position and the total length of the video by the server:
  • the frame position interval being the first frame position F1 and the second frame position F2 The interval between.
  • the frame position interval can be calculated.
  • Step S3 searching for a frame difference value corresponding to each video frame included in the frame position interval from a pre-established database, and taking a preset number of frame difference values from the frame difference value
  • the frame difference value is a difference value between any video frame and an adjacent video frame
  • the database stores a frame difference value corresponding to all video frames in the target video.
  • the server searches for a frame difference value corresponding to each video frame included in the frame position interval from a pre-established database, and takes a value from the frame difference value.
  • a frame difference value corresponding to each video frame included in the frame position interval from a pre-established database, and takes a value from the frame difference value.
  • the foregoing preset database may be an array, a table, or a storage structure of other formats.
  • This embodiment uses a one-dimensional array as an example for description.
  • the frame difference value refers to a difference value between any video frame in the target video and an adjacent previous video frame, and the value of the value is used to reflect the degree of difference between the two adjacent video frames, and the frame difference.
  • the server obtains a total number of frames of the video frame included in the target video, and establishes a one-dimensional array that is initialized to a null value and whose length is the total number of frames of the video frame, and is used to store frames corresponding to all video frames in the target video.
  • the difference value when the user plays the target video, the server acquires the currently buffered video frame sequence in the target video, and then calculates the image difference value of the adjacent video frame in the video frame sequence, and finally calculates the image difference value of the adjacent video frame.
  • the variance get the frame difference value.
  • the server obtains the total number of frames of the video frame included in the target video, allocates a one-dimensional array to the target video, defines the array as a Label, sets the length of the array Label to the total number of frames of the video frame, and initializes to null;
  • the server obtains a sequence of video frames that have been cached in the current target video, and defines a sequence of video frames that have been cached as V;
  • the server calculates an image difference value of all adjacent video frames in the video frame sequence V;
  • the server calculates a variance of the image difference value of the adjacent video frame to obtain a corresponding frame difference value
  • the server saves the calculated frame difference value to the corresponding position in the array.
  • the length of the array Label is set to 1000 and initialized to a null value; wherein, assuming that the video frame sequence that the user has buffered has 10 frames in total, the video frame sequence is V[10];
  • the image difference value is first calculated by V[i]-V[i-1], and the frame difference value M of the i-th frame is obtained by calculating the variance of the image difference value;
  • the length of the array Label is limited. When each value of the array Label is assigned, the video similarity learning process of the server is ended.
  • the server when the user plays the target video initially, the server will detect the frame with the empty label of the array; at this time, the server will randomly send the frame number to the user; after receiving the frame number, the user will perform the target later.
  • the server detects whether the frame number of the above-mentioned transmission is included. If it is included, the frame difference value of the corresponding video frame is calculated by the method for calculating the frame difference value, and then stored in the corresponding position in the array Label.
  • the server obtains, according to the frame position corresponding to the matched progress position, a preset frame number difference value with a larger frame difference value from the preset array, where the server acquires a frame difference value with a large frame difference value.
  • the number can be set by the user according to his or her preference, or can be preset by the server.
  • the frame position corresponding to the target video start progress position P0 is F0; the number of frame difference values obtained by the user to obtain the maximum is n.
  • the server obtains the n largest frames from the Label[F0] to the Label[F2] in the preset array Label according to the frame position F2 corresponding to the second progress position P2 and the frame position F0 corresponding to the initial progress position P0. Difference value.
  • the server obtains the n largest frames from the Label[F1] to the Label[F2] in the preset array Label according to the frame position F1 corresponding to the first progress position P1 and the frame position F2 corresponding to the second progress position P2. Difference value.
  • Step S4 Display a plurality of video frames corresponding to the preset number of the frame difference values to the user in a preview form.
  • the server After successfully searching for a preset number of frame difference values of a larger number of frame difference values corresponding to each video frame included in the frame position interval from the pre-established database, the server will find the frame difference value.
  • a plurality of video frames corresponding to a predetermined number of frame difference values are displayed to the user in a preview form.
  • the server matches the corresponding frame number difference value from the database to the corresponding multiple video frames, and then displays the corresponding multiple video frames in the form of a preview frame, and the display mode of the preview frame can be displayed. It is a matrix format display of a multi-join format, and can also be a card-type horizontal or vertical display or other preview display mode capable of simultaneously previewing multiple video frames.
  • the number of cells displayed in the matrix form of the plurality of palace formats may be determined according to the preset value of n, for example, if n is less than or equal to 4, a 4-square matrix is displayed; if n is greater than 4 If it is less than or equal to 9, the 9-grid matrix is displayed; if n is greater than 9 and less than or equal to 16, the 16-grid matrix is displayed.
  • the target video jumps to the progress position corresponding to the video frame for playing.
  • the server When the user performs a selection operation on a certain video frame displayed in the preview, the server further displays the preview video frame in a topology manner by displaying the preview video frame.
  • the progress position of the selected video frame in the video frame displayed in the preview frame is recorded as P3, wherein the frame corresponding to the first progress position P1
  • the position is denoted as F1
  • the frame position corresponding to the second progress position P2 is denoted as F2
  • the frame position corresponding to the progress position P3 of the video frame selected by the user is denoted as F3.
  • the frame position corresponding to the target video start progress position P0 is F0; the number of the maximum difference value obtained by the user is n.
  • the server obtains the largest value from Label[F0] to Label[F3] in the preset array Label according to the frame position F3 corresponding to the progress position P3 of the video frame selected by the user and the frame position F0 corresponding to the initial progress position P0. n frame difference values; and then preview display according to the n video frames corresponding to the acquired frame difference values.
  • the server obtains the maximum value from the Label[F1] to the Label[F3] in the preset array Label according to the frame position F1 corresponding to the first progress position P1 and the frame position F3 corresponding to the progress position P3 of the video frame selected by the user. n frame difference values; and then preview display according to the n video frames corresponding to the acquired frame difference values.
  • the server obtains the largest value from the Label[F3] to the Label[F2] in the preset array Label according to the frame position F3 corresponding to the progress position P3 of the video frame selected by the user and the frame position F2 corresponding to the second progress position P2. n frame difference values; and then preview display according to the n video frames corresponding to the acquired frame difference values.
  • the method for further displaying the preview video frame in a topological manner may be that a new multi-square matrix preview frame is generated in the vicinity of the original multi-square matrix preview frame; or, in a horizontal or vertical card preview A new horizontal or vertical card preview is generated near the box.
  • the present invention provides a method for realizing video preview by using video frame difference, and realizes preview display of representative video frames, so that the user can quickly locate the video content of interest and meet user requirements. .
  • FIG. 2 is an implementation manner of the embodiment of the present invention.
  • Step S21 Matching the corresponding first frame position according to the first progress position, and matching the corresponding second frame position according to the second progress position, where the frame position interval is the first frame position and the second An interval between frame positions, wherein the first frame position and the second frame position respectively correspond to a video frame.
  • the server matches the corresponding first frame position according to the first progress position, and then matches the corresponding second progress position according to the second progress position.
  • the second frame position is matched to the frame position interval corresponding to the progress segment in which the user adjusts the video progress.
  • the server may separately record the first progress position as P1 and the second progress position as P2 when detecting that the progress of the user's target video is adjusted from the first progress position to the second progress position;
  • the frame position interval is between the first frame position F1 and the second frame position F2 Interval, for example, the formula for the ratio between the progress position and the total length of the video by the server:
  • the frame position interval being the first frame position F1 and the second frame position F2 The interval between.
  • the server After successfully matching the first frame position and the second frame position, the server obtains a preset with a larger frame difference value from the pre-established database according to the first frame position and the second frame position obtained by the matching.
  • the frame difference value of the number is a preset with a larger frame difference value from the pre-established database according to the first frame position and the second frame position obtained by the matching.
  • the number of the largest frame difference value obtained by the user is n.
  • the server obtains the largest value from the Label[F1] to the Label[F2] in the preset array Label according to the frame position F1 corresponding to the first progress position P1 and the frame position F2 corresponding to the second progress position P2. n frame difference values.
  • the present invention provides a method for realizing video preview by using video frame difference, which better realizes preview display of representative video frames, so that the user can quickly locate the video content of interest. Meet user needs.
  • the present embodiment further includes:
  • Step S22 Match the corresponding start frame position according to the play start position, and match the corresponding second frame position according to the second progress position, where the frame position interval is the start frame position and the second An interval between frame positions, wherein the start frame position and the second frame position respectively correspond to a video frame.
  • the server matches the corresponding start frame position according to the play start position, and then matches the corresponding corresponding position according to the second progress position.
  • the second frame position is matched to the frame position interval corresponding to the progress segment in which the user adjusts the video progress.
  • the server may record the initial progress position as P0 and the second progress position as P2 when detecting that the progress of the user's target video is adjusted from the first progress position to the second progress position;
  • the server can pass the formula for the proportional relationship between the progress position and the total length of the video:
  • the frame position interval being the first frame position F1 and the second frame position F2 The interval between.
  • the server After successfully matching the start frame position and the second frame position, the server obtains a preset with a larger frame difference value from the pre-established database according to the start frame position and the second frame position obtained by the matching.
  • the frame difference value of the number is a preset with a larger frame difference value from the pre-established database according to the start frame position and the second frame position obtained by the matching.
  • the number of the largest frame difference value obtained by the user is n.
  • the server obtains the largest value from the Label[F0] to the Label[F2] in the preset array Label according to the frame position F0 corresponding to the playback start position P0 and the frame position F2 corresponding to the second progress position P2. n frame difference values.
  • the present invention provides a method for realizing video preview by using video frame difference, which better realizes preview display of representative video frames, so that the user can quickly locate the video content of interest. Meet user needs.
  • a second embodiment of the present invention provides a method for previewing a video playback progress.
  • Step S5 Establish a corresponding database for the target video, where the database is a one-dimensional array, and the length of the one-dimensional array is the total number of frames of the video frames included in the target video.
  • the server establishes the corresponding database for the target video, where the database is a one-dimensional array, and the length of the one-dimensional array is the total number of frames of the video frames included in the target video.
  • the server obtains a total number of frames of the video frame included in the target video, and establishes a one-dimensional array that is initialized to a null value and whose length is the total number of frames of the video frame, and is used to store frames corresponding to all video frames in the target video.
  • the difference value when the user plays the target video, the server acquires the currently buffered video frame sequence in the target video, and then calculates the image difference value of the adjacent video frame in the video frame sequence, and finally calculates the image difference value of the adjacent video frame.
  • the variance get the frame difference value.
  • the server obtains the total number of frames of the video frame included in the target video, allocates a one-dimensional array to the target video, defines the array as a Label, sets the length of the array Label to the total number of frames of the video frame, and initializes to null;
  • the server obtains a sequence of video frames that have been cached in the current target video, and defines a sequence of video frames that have been cached as V;
  • the server calculates an image difference value of all adjacent video frames in the video frame sequence V;
  • the server calculates a variance of the image difference value of the adjacent video frame to obtain a corresponding frame difference value
  • the server saves the calculated frame difference value to the corresponding position in the array.
  • the length of the array Label is set to 1000 and initialized to a null value; wherein, assuming that the video frame sequence that the user has buffered has 10 frames in total, the video frame sequence is V[10];
  • the image difference value is first calculated by V[i]-V[i-1], and the frame difference value M of the i-th frame is obtained by calculating the variance of the image difference value;
  • the length of the array Label is limited. When each value of the array Label is assigned, the video similarity learning process of the server is ended.
  • the server when the user plays the target video initially, the server will detect the frame with the empty label of the array; at this time, the server will randomly send the frame number to the user; after receiving the frame number, the user will perform the target later.
  • the server detects whether the frame number of the above-mentioned transmission is included. If it is included, the frame difference value of the corresponding video frame is calculated by the method for calculating the frame difference value, and then stored in the corresponding position in the array Label.
  • the present invention provides a method for realizing video preview by using video frame difference, which better realizes preview display of representative video frames, so that the user can quickly locate the video content of interest. Meet user needs.
  • an implementation manner of establishing the corresponding database for the target video includes:
  • Step S51 Acquire a total number of frames of the video frame included in the target video, and establish a one-dimensional array that is initialized to a null value and whose length is the total number of frames of the video frame.
  • the server acquires the total number of frames of the video frame included in the target video, and establishes a one-dimensional array that is initialized to a null value and whose length is the total number of frames of the video frame.
  • the server obtains the total number of frames of the video frame included in the target video, allocates a one-dimensional array to the target video, defines the array as a Label, sets the length of the array Label to the total number of frames of the video frame, and initializes to null.
  • Step S52 Acquire a sequence of video frames that are buffered by the user in the target video.
  • the server After successfully establishing a one-dimensional array initialized to a null value and having a length of a total number of frames of the video frame, the server acquires a sequence of the buffered video frames in the current target video.
  • Step S53 calculating image difference values of each video frame and adjacent video frames in the buffered video frame sequence in sequence.
  • the server calculates image difference values of adjacent video frames in the video frame sequence.
  • the video frame sequence that the user has buffered have 10 frames in total, then the video frame sequence is V[10]; when calculating the frame difference value of the i-th frame, the image difference value is calculated by V[i]-V[i-1] .
  • step S54 Calculate a variance of the image difference value, obtain a corresponding frame difference value, and store the frame difference value into the one-dimensional array.
  • the server After successfully calculating the image difference value of the adjacent video frame in the video frame sequence, the server obtains the frame difference value by calculating the variance of the image difference value of the adjacent video frame.
  • Step S55 determining whether the frame difference value corresponding to each video frame in the target video has been stored in the one-dimensional array, and if not, repeating the step of calculating the frame difference value; if yes, ending the The target video establishes the corresponding database.
  • the server determines whether the frame difference value corresponding to each video frame in the target video is stored in the one-dimensional array, and if not, repeats the step of calculating the frame difference value; if yes, Then end the establishment of the corresponding database for the target video.
  • step S53 determines that the frame difference value corresponding to each video frame in the target video is not stored in the one-dimensional array. If the server determines that the frame difference value corresponding to each video frame in the target video is not stored in the one-dimensional array, the foregoing step S53 is performed; if the server determines that each video frame in the target video is stored in the one-dimensional array, The frame difference value is then executed in step S56 to end the operation of establishing a corresponding database for the target video.
  • the server determines whether the user's usage environment and the CPU calculation amount cause a calculation timeout. If the calculation timeout is not caused, the step of assigning the preset array to the target video is performed, otherwise, Execution; the above-mentioned user's use environment includes external environmental factors that affect the device that plays video on the user such as temperature and humidity.
  • the present invention provides a method for realizing video preview by using video frame difference, which better realizes preview display of representative video frames, so that the user can quickly locate the video content of interest. Meet user needs.
  • a plurality of video frames corresponding to the preset number of the frame difference values are searched in a preview form.
  • An embodiment of a user performing display including:
  • step S41 the plurality of video frames corresponding to the preset number of the frame difference values are displayed to the user in a multi-grid preview or a card preview.
  • the frame difference of the preset number of the frame difference values corresponding to each video frame included in the frame position interval is successfully searched from the pre-established database.
  • the server will find a preset number of the plurality of video frames corresponding to the frame difference value, and display the video frame to the user in a multi-grid preview form or a card preview form.
  • the server matches the corresponding frame number difference value from the database to the corresponding multiple video frames, and then displays the corresponding multiple video frames in the form of a preview frame, and the display mode of the preview frame can be displayed.
  • It is a matrix form display of the Jiugong format. It can also be a card-type horizontal or vertical display or other preview display method that can simultaneously preview multiple video frames.
  • the target video jumps to the progress position corresponding to the video frame for playing.
  • the server When the user performs a selection operation on a certain video frame displayed in the preview, the server further displays the preview video frame in a topology manner by displaying the preview video frame.
  • the progress position of the selected video frame in the video frame displayed in the preview frame is recorded as P3, wherein the frame corresponding to the first progress position P1
  • the position is denoted by F1
  • the frame position corresponding to the second progress position P2 is denoted as F2
  • the frame position corresponding to the progress position P3 of the video frame selected by the user is denoted as F3.
  • the frame position corresponding to the target video start progress position P0 is F0; the number of the maximum difference value obtained by the user is n.
  • the server obtains the largest value from Label[F0] to Label[F3] in the preset array Label according to the frame position F3 corresponding to the progress position P3 of the video frame selected by the user and the frame position F0 corresponding to the initial progress position P0. n frame difference values; and then preview display according to the n video frames corresponding to the acquired frame difference values.
  • the server obtains the maximum value from the Label[F1] to the Label[F3] in the preset array Label according to the frame position F1 corresponding to the first progress position P1 and the frame position F3 corresponding to the progress position P3 of the video frame selected by the user. n frame difference values; and then preview display according to the n video frames corresponding to the acquired frame difference values.
  • the server obtains the largest value from the Label[F3] to the Label[F2] in the preset array Label according to the frame position F3 corresponding to the progress position P3 of the video frame selected by the user and the frame position F2 corresponding to the second progress position P2. n frame difference values; and then preview display according to the n video frames corresponding to the acquired frame difference values.
  • the method for further displaying the preview video frame in a topological manner may be that a new multi-square matrix preview frame is generated in the vicinity of the original multi-square matrix preview frame; or, in a horizontal or vertical card preview A new horizontal or vertical card preview is generated near the box.
  • the present invention provides a method for realizing video preview by using video frame difference, which better realizes preview display of representative video frames, so that the user can quickly locate the video content of interest. Meet user needs.
  • the present invention further provides a preview device for video playback progress.
  • a first embodiment of the present invention provides a video playback progress preview apparatus, including:
  • the detecting module 100 is configured to detect an adjustment of a progress position of the target video by the user, and obtain an adjusted progress segment.
  • the progress segment is the progress position interval between the first progress position of the user from the trigger start to the second progress position at the end of the trigger, or the progress between the play start position of the target video and the second progress position at the end of the trigger. Location interval.
  • the matching module 200 is configured to match the corresponding frame position interval according to the progress segment.
  • the searching module 300 is configured to search, from a pre-established database, a frame difference value corresponding to each video frame included in the frame position interval, and take a preset number of values from the frame difference value. a frame difference value, where the frame difference value is a difference value between any video frame and an adjacent video frame, and the database stores a frame difference value corresponding to all video frames in the target video.
  • the display module 400 is configured to display the plurality of video frames corresponding to the preset number of the frame difference values to the user in a preview form.
  • the present invention provides a device for realizing video preview by using video frame difference, which realizes preview display of a representative video frame, so that the user can quickly locate the video content of interest and meet the user's needs.
  • the matching module 200 is further configured to match the corresponding first frame position according to the first progress position, according to the second The progress position is matched with a corresponding second frame position, where the frame position interval is an interval between the first frame position and the second frame position, wherein the first frame position and the second frame position respectively correspond to In a video frame.
  • the matching module 200 is further configured to match the corresponding start frame position according to the play start position, according to the first The second progress position matches the corresponding second frame position, where the frame position interval is an interval between the start frame position and the second frame position, wherein the start frame position and the second frame position are respectively Corresponds to a video frame.
  • the second embodiment of the present invention provides a preview device for video playback progress. Based on the device of the first embodiment shown in FIG. 7, the method further includes:
  • the database module 500 is configured to establish a corresponding database for the target video, where the database is a one-dimensional array, and the length of the one-dimensional array is the total number of frames of the video frames included in the target video.
  • the database module 500 includes:
  • the establishing unit 510 is configured to acquire a total number of frames of the video frame included in the target video, and establish a one-dimensional array that is initialized to a null value and has a length of a total number of frames of the video frame.
  • the obtaining unit 520 is configured to acquire a sequence of video frames that are buffered when the user initially plays the target video.
  • the first calculating unit 530 is configured to sequentially calculate image difference values of each video frame and adjacent video frames in the buffered video frame sequence.
  • the second calculating unit 540 is configured to calculate a variance of the image difference value, obtain a corresponding frame difference value, and store the frame difference value into the one-dimensional array.
  • the determining unit 550 is configured to determine whether a frame difference value corresponding to each video frame in the target video is already stored in the one-dimensional array, and if not, returning to the acquiring unit to repeatedly calculate the frame difference value until the one The frame difference value corresponding to each video frame in the target video is stored in the dimension array.
  • the display module 400 is further configured to use the preset preset number of the plurality of video frames corresponding to the frame difference value to A multi-grid preview or a card preview is displayed to the user.
  • Each module in the preview device of the video playback progress of the present invention corresponds to each step in the foregoing method embodiment, and various functions and implementation processes are not described herein again.

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Abstract

本发明公开了一种视频播放进度的预览方法和装置，其方法包括：检测用户对目标视频的进度位置的调整，获取调整的进度段；根据进度段匹配对应的帧位置区间；从预先建立的数据库中查找帧位置区间所包含的每一视频帧所对应的帧差异值，并从帧差异值中取数值较大的预设个数的帧差异值；将查找到的预设个数的帧差异值对应的多个视频帧，以预览形式向用户进行显示。本发明解决了现有技术中在观看网络视频过程中无法快速地定位到感兴趣的视频内容的问题。实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。

Description

视频播放进度的预览方法和装置
技术领域
本发明涉及网络视频技术领域，尤其涉及一种视频播放进度的预览方法和装置。
背景技术
随着互联网技术的发展，网络视频播放越来越广泛，通过互联网观看网络视频逐渐成为一种休闲娱乐的网络视频生活方式。
用户在观看大量的网络视频时，为了有选择地观看感兴趣的内容，会频繁地调整视频播放进度。在现有技术中，频繁调整网络视频播放进度，有时会错失用户感兴趣的视频内容，导致用户不得不多次反复调整才能定位到感兴趣的视频内容。另外，反复调整网络视频播放进度，在网络状态不好的情况下，反复加载视频，会处于长时间等待中，造成不良的用户体验。
发明内容
本发明的主要目的在于提出一种视频播放进度的预览方法和装置，旨在实现对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
为实现上述目的，本发明提供的视频播放进度的预览方法，包括：
检测用户对目标视频的进度位置的调整，获取调整的进度段，其中所述进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间，或者，所述进度段为目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间；
根据所述第一进度位置匹配对应的第一帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述第一帧位置和所述第二帧位置之间的区间，其中所述第一帧位置和所述第二帧位置分别对应于一视频帧，或者，根据所述播放起始位置匹配对应的起始帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述起始帧位置和所述第二帧位置之间的区间，其中所述起始帧位置和所述第二帧位置分别对应于一视频帧；
从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值；
将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
本发明实施例还提出一种视频播放进度的预览方法，包括：
检测用户对目标视频的进度位置的调整，获取调整的进度段；
根据所述进度段匹配对应的帧位置区间；
从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值；
将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示。
本发明实施例还提出一种视频播放进度的预览装置，所述装置包括：
检测模块，用于检测用户对目标视频的进度位置的调整，获取调整的进度段；
匹配模块，用于根据所述进度段匹配对应的帧位置区间；
查找模块，用于从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值；
显示模块，用于将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示。
本发明公开了一种视频播放进度的预览方法和装置，通过检测用户对目标视频的进度位置的调整，获取调整的进度段；根据进度段匹配对应的帧位置区间；从预先建立的数据库中查找帧位置区间所包含的每一视频帧所对应的帧差异值，并从帧差异值中取数值较大的预设个数的帧差异值；将查找到的预设个数的帧差异值对应的多个视频帧，以预览形式向用户进行显示。由此，解决了现有技术中在观看网络视频过程中无法快速地定位到感兴趣的视频内容的问题，实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
附图说明
图1是本发明视频播放进度的预览方法第一实施例的流程示意图；
图2是本发明实施例中的第一种实施方式的流程示意图；
图3是本发明实施例中的第二种实施方式的流程示意图；
图4是本发明视频播放进度的预览方法第二实施例的流程示意图；
图5是本发明实施例中为所述目标视频建立相应的所述数据库的一种流程示意图；
图6是本发明实施例中将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示的一种流程示意图；
图7是本发明视频播放进度的预览装置第一实施例的功能模块示意图；
图8是本发明视频播放进度的预览装置第二实施例的功能模块示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明实施例的主要解决方案是：检测用户对目标视频的进度位置的调整，获取调整的进度段；根据进度段匹配对应的帧位置区间；从预先建立的数据库中查找帧位置区间所包含的每一视频帧所对应的帧差异值，并从帧差异值中取数值较大的预设个数的帧差异值；将查找到的预设个数的帧差异值对应的多个视频帧，以预览形式向用户进行显示。由此，解决了现有技术中在观看网络视频过程中无法快速地定位到感兴趣的视频内容的问题，实现了对有代表性的视频帧进行预览，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
如图1所示，本发明第一实施例提出一种视频播放进度的预览方法，包括：
步骤S1，检测用户对目标视频的进度位置的调整，获取调整的进度段。
本发明方法的执行主体可以为一种数据处理设备或服务器，本实施例以服务器进行举例，当然也不限定于其他能够实现视频播放进度的预览的多媒体数据处理设备。
具体地，服务器检测用户对目标视频的进度位置的调整，获取调整的进度段。
其中，用户可以通过拖动目标视频的播放进度条，还可以通过按键操作或者其他能够调整播放进度位置的操作方式，实现对目标视频播放进度位置的调整。
其中，在检测用户对目标视频播放进度位置的调整时，服务器获取用户对目标视频播放进度位置进行调整的进度段，对调整前后的进度位置进行记录。
本发明中进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间，或目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间。
步骤S2，根据所述进度段匹配对应的帧位置区间。
具体地，在成功检测用户对目标视频的进度位置的调整，获取调整的进度段后，服务器根据进度段匹配对应的帧位置区间。
其中，服务器根据调整前后的进度位置，匹配得到与进度位置对应的帧位置，从而匹配到用户对视频进度进行调整的进度段所对应的帧位置区间。
如当进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间时，根据所述进度段匹配对应的帧位置区间的实现方式可以为：
a. 当用户进行目标视频播放时，服务器在检测到用户对目标视频的进度从第一进度位置调整至第二进度位置时，可分别记录第一进度位置为P1，第二进度位置为P2；
b. 匹配与第一进度位置P1对应的第一帧位置F1和与第二进度位置P2对应的第二帧位置F2，帧位置区间即为第一帧位置F1和所述第二帧位置F2之间的区间，例如：服务器可以通过进度位置与视频总时长之间的比例关系公式：
F / 总帧数 = P / 视频总时长；
进行计算，得到与第一进度位置P1对应的第一帧位置F1和与第二进度位置P2对应的第二帧位置F2，帧位置区间即为第一帧位置F1和所述第二帧位置F2之间的区间。
同理，当目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间时，可以计算得到帧位置区间。
步骤S3，从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值。
具体地，在成功根据进度段匹配对应的帧位置区间后，服务器从预先建立的数据库中查找帧位置区间所包含的每一视频帧所对应的帧差异值，并从帧差异值中取数值较大的预设个数的帧差异值。
其中，上述预设的数据库，可以是数组、表格或其他格式的存储结构，本实施例以一维数组为例进行说明。
其中，上述帧差异值，指的是目标视频中任一视频帧与相邻的前一视频帧的差异值，其数值的大小用于体现两个相邻的视频帧的画面差异程度，帧差异值越大，画面差异程度越大，则画面越具有代表性；帧差异值越小，画面差异程度越小。
其中，服务器获取目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组，用于存储目标视频中所有视频帧对应的帧差异值；当用户对目标视频进行播放时，服务器获取目标视频中当前已缓存的视频帧序列，然后计算视频帧序列中相邻视频帧的图像差异值，最后计算相邻视频帧的图像差异值的方差，得到帧差异值。
在具体实现时，可以采取如下方式：
a. 服务器获取目标视频所包含的视频帧的总帧数，为目标视频分配一个一维数组，定义该数组为Label，将数组Label的长度设置为该视频帧的总帧数，并初始化为空；
b. 当用户对目标视频进行播放时，服务器获取当前目标视频中已完成缓存的视频帧序列，定义已完成缓存的视频帧序列为V；
c. 服务器计算视频帧序列V中所有相邻视频帧的图像差异值；
d. 服务器计算相邻视频帧的图像差异值的方差，得到对应的帧差异值；
e. 服务器将计算得到的帧差异值保存至数组中对应的位置。
例如：目标视频总帧数有1000帧，则设置数组Label的长度为1000，并初始化为空值；其中，假设用户已经缓存的视频帧序列共有10帧，则视频帧序列为V[10]；在计算第i帧的帧差异值时，先通过V[i]-V[i-1]计算得到图像差异值，再通过计算该图像差异值的方差得到第i帧的帧差异值M；设第i帧在目标视频中的第F个帧位置，则将帧差异值M保存到对应的位置Label[F]，即Label[F]=M。
其中，数组Label的长度是有限的，当数组Label的每个值都被赋值后，结束服务器的视频相似度学习过程。
其中，作为一种特殊情况，用户在初期播放目标视频时，服务器会检测数组Label为空的帧；此时，服务器会将帧号随机发送给用户；用户收到帧号后，在后续进行目标视频播放缓冲时，服务器检测是否包含上述发送的帧号，若包含，则通过上述计算帧差异值的方法计算对应视频帧的帧差异值，再保存至数组Label中对应的位置中。
其中，服务器根据匹配到的进度位置对应的帧位置，从上述预设的数组中获取帧差异值较大的预设个数的帧差异值，其中服务器获取帧差异值较大的帧差异值的个数可以由用户根据喜好自行设定，也可以由服务器预先设定。
在具体实现时，可以采取如下方式：
设用户对目标视频的进度从第一进度位置P1调整至第二进度位置P2，其中第一进度位置P1对应的帧位置记为F1，第二进度位置P2对应的帧位置记为F2。
同时，设目标视频起始进度位置P0对应的帧位置为F0；用户自行设定的获取最大的帧差异值的个数为n。
第一种实施方式：
服务器根据第二进度位置P2对应的帧位置F2和起始进度位置P0对应的帧位置F0，在预设的数组Label中，从Label[F0]到Label[F2]里获取数值最大的n个帧差异值。
第二种实施方式：
服务器根据第一进度位置P1对应的帧位置F1和第二进度位置P2对应的帧位置F2，在预设的数组Label中，从Label[F1]到Label[F2]里获取数值最大的n个帧差异值。
步骤S4，将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示。
具体地，在成功从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值中数值较大的预设个数的帧差异值后，服务器将查找到的预设个数的帧差异值对应的多个视频帧，以预览形式向用户进行显示。
其中，服务器根据获取得到的预设个数的帧差异值从数据库中匹配到对应的多个视频帧，再将对应的多个视频帧进行以预览框的形式进行显示，预览框的显示方式可以是多宫格式的矩阵形式排列显示，还可以是卡片式的横向或纵向排列显示或者其他能实现多个视频帧同时预览的预览显示方式。
其中，上述多宫格式的矩阵形式排列显示的宫格个数，可以根据上述预先设定的n的数值进行确定，例如，若n小于等于4，则显示4宫格矩阵；若n大于4且小于等于9，则显示9宫格矩阵；若n大于9且小于等于16，则显示16宫格矩阵。
其中，当用户对预览框显示的某一个视频帧进行选择操作时，则目标视频跳转至该视频帧所对应的进度位置进行播放。
其中，当用户对预览显示的某一个视频帧进行选择操作时，服务器还通过上述显示预览视频帧的方式，以拓扑结构的方式进一步显示预览视频帧。
在具体实现时，可以采取如下方式：
设用户对目标视频的进度从第一进度位置P1调整至第二进度位置P2后，在预览框显示的视频帧中选择的视频帧的进度位置记为P3，其中第一进度位置P1对应的帧位置记为F1，第二进度位置P2对应的帧位置记为F2，用户选择的视频帧的进度位置P3对应的帧位置记为F3。
同时，设目标视频起始进度位置P0对应的帧位置为F0；用户自行设定的获取最大的差异值的个数为n。
第一种实施方式：
服务器根据用户选择的视频帧的进度位置P3对应的帧位置F3和起始进度位置P0对应的帧位置F0，在预设的数组Label中，从Label[F0]到Label[F3]里获取数值最大的n个帧差异值；再根据获取的帧差异值对应的n个视频帧进行预览显示。
第二种实施方式：
服务器根据第一进度位置P1对应的帧位置F1和用户选择的视频帧的进度位置P3对应的帧位置F3，在预设的数组Label中，从Label[F1]到Label[F3]里获取数值最大的n个帧差异值；再根据获取的帧差异值对应的n个视频帧进行预览显示。
第三种实施方式：
服务器根据用户选择的视频帧的进度位置P3对应的帧位置F3和第二进度位置P2对应的帧位置F2，在预设的数组Label中，从Label[F3]到Label[F2]里获取数值最大的n个帧差异值；再根据获取的帧差异值对应的n个视频帧进行预览显示。
其中，上述以拓扑结构的方式进一步显示预览视频帧的方式可以是，在原来的多宫格矩阵预览框的附近生成了一个新的多宫格矩阵预览框；或者，在横向或纵向卡片式预览框的附近生成了一个新的横向或纵向卡片式预览框。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的方法，实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
进一步的，为了更好地利用视频帧差异实现视频预览，参照图2，为本发明实施例的一种实施方式，基于上述第一实施例，本实施方式还包括：
步骤S21，根据所述第一进度位置匹配对应的第一帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述第一帧位置与所述第二帧位置之间的区间，其中所述第一帧位置和所述第二帧位置分别对应于一视频帧。
具体地，在成功检测用户对目标视频的进度位置的调整，获取调整的进度段后，服务器根据所述第一进度位置匹配对应的第一帧位置，再根据所述第二进度位置匹配对应的第二帧位置，从而匹配到用户对视频进度进行调整的进度段所对应的帧位置区间。
在具体实现时，可以采取如下方式：
a. 当用户进行目标视频播放时，服务器在检测到用户对目标视频的进度从第一进度位置调整至第二进度位置时，可分别记录第一进度位置为P1，第二进度位置为P2；
b. 匹配与第一进度位置P1对应的第一帧位置F1和与第二进度位置P2对应的第二帧位置F2，帧位置区间即为第一帧位置F1和所述第二帧位置F2之间的区间，例如：服务器可以通过进度位置与视频总时长之间的比例关系公式：
F / 总帧数 = P / 视频总时长；
进行计算，得到与第一进度位置P1对应的第一帧位置F1和与第二进度位置P2对应的第二帧位置F2，帧位置区间即为第一帧位置F1和所述第二帧位置F2之间的区间。
基于步骤S21的实施，在成功匹配第一帧位置和第二帧位置后，服务器根据匹配得到的第一帧位置和第二帧位置，从预先建立的数据库中获取帧差异值较大的预设个数的帧差异值。
在具体实现时，可以采取如下方式：
设用户对目标视频的进度从第一进度位置P1调整至第二进度位置P2，其中第一进度位置P1对应的帧位置记为F1，第二进度位置P2对应的帧位置记为F2。
同时，设用户自行设定的获取最大的帧差异值的个数为n。
此时，服务器根据第一进度位置P1对应的帧位置F1和第二进度位置P2对应的帧位置F2，在预设的数组Label中，从Label[F1]到Label[F2]里获取数值最大的n个帧差异值。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的方法，更好地实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
进一步的，为了更好地利用视频帧差异实现视频预览，参照图3，为本发明实施例的另一种实施方式，基于上述第一实施例，本实施方式还包括：
步骤S22，根据所述播放起始位置匹配对应的起始帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述起始帧位置与所述第二帧位置之间的区间，其中所述起始帧位置和所述第二帧位置分别对应于一视频帧。
具体地，在成功检测用户对目标视频的进度位置的调整，获取调整的进度段后，服务器根据所述播放起始位置匹配对应的起始帧位置，再根据所述第二进度位置匹配对应的第二帧位置，从而匹配到用户对视频进度进行调整的进度段所对应的帧位置区间。
在具体实现时，可以采取如下方式：
a. 当用户进行目标视频播放时，服务器在检测到用户对目标视频的进度从第一进度位置调整至第二进度位置时，可记录起始进度位置为P0，第二进度位置为P2；
b.匹配与起始进度位置P0对应的起始帧位置F0和与第二进度位置P2对应的第二帧位置F2，帧位置区间即为第一帧位置F1和所述第二帧位置F2之间的区间例如，服务器可以通过进度位置与视频总时长之间的比例关系公式：
F / 总帧数 = P / 视频总时长；
进行计算，得到与起始进度位置P0对应的起始帧位置F0和与第二进度位置P2对应的第二帧位置F2，帧位置区间即为第一帧位置F1和所述第二帧位置F2之间的区间。
基于步骤S22的实施，在成功匹配起始帧位置和第二帧位置后，服务器根据匹配得到的起始帧位置和第二帧位置，从预先建立的数据库中获取帧差异值较大的预设个数的帧差异值。
在具体实现时，可以采取如下方式：
设用户对目标视频的进度从第一进度位置P1调整至第二进度位置P2，其中第二进度位置P2对应的帧位置记为F2。
同时，设用户自行设定的获取最大的帧差异值的个数为n。
此时，服务器根据播放起始位置P0对应的帧位置F0和第二进度位置P2对应的帧位置F2，在预设的数组Label中，从Label[F0]到Label[F2]里获取数值最大的n个帧差异值。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的方法，更好地实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
如图4所示，本发明第二实施例提出一种视频播放进度的预览方法，在基于如图1所示第一实施例的步骤S1之前，还包括：
步骤S5，为所述目标视频建立相应的所述数据库，所述数据库为一维数组，所述一维数组的长度为所述目标视频中所包含的视频帧的总帧数。
具体地，服务器为目标视频建立相应的所述数据库，该数据库为一维数组，该一维数组的长度为目标视频中所包含的视频帧的总帧数。
其中，服务器获取目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组，用于存储目标视频中所有视频帧对应的帧差异值；当用户对目标视频进行播放时，服务器获取目标视频中当前已缓存的视频帧序列，然后计算视频帧序列中相邻视频帧的图像差异值，最后计算相邻视频帧的图像差异值的方差，得到帧差异值。
在具体实现时，可以采取如下方式：
a. 服务器获取目标视频所包含的视频帧的总帧数，为目标视频分配一个一维数组，定义该数组为Label，将数组Label的长度设置为该视频帧的总帧数，并初始化为空；
b. 当用户对目标视频进行播放时，服务器获取当前目标视频中已完成缓存的视频帧序列，定义已完成缓存的视频帧序列为V；
c. 服务器计算视频帧序列V中所有相邻视频帧的图像差异值；
d. 服务器计算相邻视频帧的图像差异值的方差，得到对应的帧差异值；
e. 服务器将计算得到的帧差异值保存至数组中对应的位置。
例如：目标视频总帧数有1000帧，则设置数组Label的长度为1000，并初始化为空值；其中，假设用户已经缓存的视频帧序列共有10帧，则视频帧序列为V[10]；在计算第i帧的帧差异值时，先通过V[i]-V[i-1]计算得到图像差异值，再通过计算该图像差异值的方差得到第i帧的帧差异值M；设第i帧在目标视频中的第F个帧位置，则将帧差异值M保存到对应的位置Label[F]，即Label[F]=M。
其中，数组Label的长度是有限的，当数组Label的每个值都被赋值后，结束服务器的视频相似度学习过程。
其中，作为一种特殊情况，用户在初期播放目标视频时，服务器会检测数组Label为空的帧；此时，服务器会将帧号随机发送给用户；用户收到帧号后，在后续进行目标视频播放缓冲时，服务器检测是否包含上述发送的帧号，若包含，则通过上述计算帧差异值的方法计算对应视频帧的帧差异值，再保存至数组Label中对应的位置中。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的方法，更好地实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
进一步的，为了更好地利用视频帧差异实现视频预览，参照图5，为本发明实施例中为所述目标视频建立相应的所述数据库的一种实施方式，包括：
步骤S51，获取所述目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组。
具体地，服务器获取目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为视频帧的总帧数的一维数组。
在具体实现时，可采用如下方法：
服务器获取目标视频所包含的视频帧的总帧数，为目标视频分配一个一维数组，定义该数组为Label，将数组Label的长度设置为该视频帧的总帧数，并初始化为空。
步骤S52，获取用户初始播放所述目标视频中已缓冲的视频帧序列。
具体地，在成功建立一个初始化为空值，长度为视频帧的总帧数的一维数组后，服务器获取当前目标视频中已缓存的视频帧序列。
步骤 S53，依次计算已缓冲的所述视频帧序列中每一视频帧与相邻视频帧的图像差异值。
具体地，在成功获取当前目标视频中已缓存的视频帧序列后，服务器计算视频帧序列中相邻视频帧的图像差异值。
在具体实现时，可以采取如下方式：
设用户已经缓存的视频帧序列共有10帧，则视频帧序列为V[10]；在计算第i帧的帧差异值时，通过V[i]-V[i-1]计算得到图像差异值。
步骤 S54，计算所述图像差异值的方差，得到对应的帧差异值，并将所述帧差异值存储至所述一维数组中。
具体地，在成功计算视频帧序列中相邻视频帧的图像差异值后，服务器通过计算相邻视频帧的图像差异值的方差，得到帧差异值。
在具体实现时，可以采取如下方式：
通过计算该图像差异值的方差得到第i帧的帧差异值M；设第i帧在目标视频中的第F个帧位置，则将帧差异值M保存到对应的位置Label[F]，即Label[F]=M。
步骤S55，判断所述一维数组中是否已存储有所述目标视频中每一视频帧对应的帧差异值，若否，则重复执行计算所述帧差异值的步骤；若是，则结束为所述目标视频建立相应的所述数据库。
具体地，在成功存储上述帧差异值后，服务器判断一维数组中是否已存储有目标视频中每一视频帧对应的帧差异值，若否，则重复执行计算帧差异值的步骤；若是，则结束为目标视频建立相应的数据库。
其中，若服务器判断一维数组中还未存储有目标视频中每一视频帧对应的帧差异值，则执行上述步骤S53；若服务器判断一维数组中已存储有目标视频中每一视频帧对应的帧差异值，则执行步骤S56，结束为目标视频建立相应的数据库的操作。
另外，在执行计算之前，服务器会对用户的使用环境和CPU计算量是否造成计算超时进行判断，若不造成计算超时，则执行分配所述预设的数组给目标视频的步骤，否则，则不执行；上述用户的使用环境包括温度、湿度等会对用户进行视频播放的设备造成影响的外界环境因素。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的方法，更好地实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
进一步的，为了更好地利用视频帧差异实现视频预览，参照图6，为本发明实施例中将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示的一种实施方式，包括：
步骤S41，将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
具体地，基于上述实施例方法的实施，在成功从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值中数值较大的预设个数的帧差异值后，服务器将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
其中，服务器根据获取得到的预设个数的帧差异值从数据库中匹配到对应的多个视频帧，再将对应的多个视频帧进行以预览框的形式进行显示，预览框的显示方式可以是九宫格式的矩阵形式排列显示，还可以是卡片式的横向或纵向排列显示或者其他能实现多个视频帧同时预览的预览显示方式。
其中，当用户对预览框显示的某一个视频帧进行选择操作时，则目标视频跳转至该视频帧所对应的进度位置进行播放。
其中，当用户对预览显示的某一个视频帧进行选择操作时，服务器还通过上述显示预览视频帧的方式，以拓扑结构的方式进一步显示预览视频帧。
在具体实现时，可以采取如下方式：
设用户对目标视频的进度从第一进度位置P1调整至第二进度位置P2后，在预览框显示的视频帧中选择的视频帧的进度位置记为P3，其中第一进度位置P1对应的帧位置为记F1，第二进度位置P2对应的帧位置记为F2，用户选择的视频帧的进度位置P3对应的帧位置记为F3。
同时，设目标视频起始进度位置P0对应的帧位置为F0；用户自行设定的获取最大的差异值的个数为n。
第一种实施方式：
服务器根据用户选择的视频帧的进度位置P3对应的帧位置F3和起始进度位置P0对应的帧位置F0，在预设的数组Label中，从Label[F0]到Label[F3]里获取数值最大的n个帧差异值；再根据获取的帧差异值对应的n个视频帧进行预览显示。
第二种实施方式：
服务器根据第一进度位置P1对应的帧位置F1和用户选择的视频帧的进度位置P3对应的帧位置F3，在预设的数组Label中，从Label[F1]到Label[F3]里获取数值最大的n个帧差异值；再根据获取的帧差异值对应的n个视频帧进行预览显示。
第三种实施方式：
服务器根据用户选择的视频帧的进度位置P3对应的帧位置F3和第二进度位置P2对应的帧位置F2，在预设的数组Label中，从Label[F3]到Label[F2]里获取数值最大的n个帧差异值；再根据获取的帧差异值对应的n个视频帧进行预览显示。
其中，上述以拓扑结构的方式进一步显示预览视频帧的方式可以是，在原来的多宫格矩阵预览框的附近生成了一个新的多宫格矩阵预览框；或者，在横向或纵向卡片式预览框的附近生成了一个新的横向或纵向卡片式预览框。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的方法，更好地实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
本发明进一步提供一种视频播放进度的预览装置。
如图7所示，本发明第一实施例提出一种视频播放进度的预览装置，包括：
检测模块100，用于检测用户对目标视频的进度位置的调整，获取调整的进度段。
本发明中进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间，或目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间。
匹配模块200，用于根据所述进度段匹配对应的帧位置区间。
查找模块300，用于从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值。
显示模块400，用于将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示。
通过上述方案，本发明提供了一种利用视频帧差异实现视频预览的装置，实现了对有代表性的视频帧进行预览显示，从而使用户能快速地定位到感兴趣的视频内容，满足用户需求。
进一步的，为了更好地利用视频帧差异实现视频预览，作为一种实施方式，所述匹配模块200，还用于根据所述第一进度位置匹配对应的第一帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述第一帧位置与所述第二帧位置之间的区间，其中所述第一帧位置和所述第二帧位置分别对应于一视频帧。
进一步的，为了更好地利用视频帧差异实现视频预览，作为另一种实施方式，所述匹配模块200，还用于根据所述播放起始位置匹配对应的起始帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述起始帧位置与所述第二帧位置之间的区间，其中所述起始帧位置和所述第二帧位置分别对应于一视频帧。
如图8所示，本发明第二实施例提出一种视频播放进度的预览装置，在如图7所示第一实施例的装置的基础上，还包括：
数据库模块500，用于为所述目标视频建立相应的所述数据库，所述数据库为一维数组，所述一维数组的长度为所述目标视频中所包含的视频帧的总帧数。
进一步的，为了更好地利用视频帧差异实现视频预览，作为一种实施方式，数据库模块500包括：
建立单元510，用于获取所述目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组。
获取单元520，用于获取用户初始播放所述目标视频时已缓冲的视频帧序列。
第一计算单元530，用于依次计算已缓冲的所述视频帧序列中每一视频帧与相邻视频帧的图像差异值。
第二计算单元540，用于计算所述图像差异值的方差，得到对应的帧差异值，并将所述帧差异值存储至所述一维数组中。
判断单元550，用于判断所述一维数组中是否已存储有所述目标视频中每一视频帧对应的帧差异值，若否，则返回获取单元重复计算所述帧差异值直至所述一维数组中存储有所述目标视频中每一视频帧对应的帧差异值。
进一步的，为了更好地利用视频帧差异实现视频预览，作为一种实施方式，显示模块400，还用于将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
本发明视频播放进度的预览装置中各个模块与上述方法实施例中各步骤相对应，各个的功能和实现过程在此处不再一一赘述。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (13)

  1. 一种视频播放进度的预览方法，其特征在于，所述方法包括：
    检测用户对目标视频的进度位置的调整，获取调整的进度段，其中所述进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间，或者，所述进度段为目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间；
    根据所述第一进度位置匹配对应的第一帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述第一帧位置和所述第二帧位置之间的区间，其中所述第一帧位置和所述第二帧位置分别对应于一视频帧，或者，根据所述播放起始位置匹配对应的起始帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述起始帧位置和所述第二帧位置之间的区间，其中所述起始帧位置和所述第二帧位置分别对应于一视频帧；
    从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值；
    将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
  2. 根据权利要求1所述的方法，其特征在于，所述检测用户对目标视频的进度位置的调整，获取调整的进度段的步骤之前还包括：
    为所述目标视频建立相应的所述数据库，所述数据库为一维数组，所述一维数组的长度为所述目标视频中所包含的视频帧的总帧数。
  3. 如权利要求2所述的方法，其特征在于，所述为所述目标视频建立相应的所述数据库的步骤包括：
    获取所述目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组；
    获取用户初始播放所述目标视频时已缓冲的视频帧序列；
    依次计算已缓冲的所述视频帧序列中每一视频帧与相邻视频帧的图像差异值；
    计算所述图像差异值的方差，得到对应的帧差异值，并将所述帧差异值存储至所述一维数组中；
    判断所述一维数组中是否已存储有所述目标视频中每一视频帧对应的帧差异值，若否，则重复执行计算所述帧差异值的步骤；若是，则结束为所述目标视频建立相应的所述数据库的步骤。
  4. 一种视频播放进度的预览方法，其特征在于，所述方法包括：
    检测用户对目标视频的进度位置的调整，获取调整的进度段；
    根据所述进度段匹配对应的帧位置区间；
    从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值；
    将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示。
  5. 根据权利要求4所述的方法，其特征在于，所述进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间，或者，所述进度段为目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间；
    所述根据所述进度段匹配对应的帧位置区间的步骤包括：
    根据所述第一进度位置匹配对应的第一帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述第一帧位置和所述第二帧位置之间的区间，其中所述第一帧位置和所述第二帧位置分别对应于一视频帧，或者，根据所述播放起始位置匹配对应的起始帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述起始帧位置和所述第二帧位置之间的区间，其中所述起始帧位置和所述第二帧位置分别对应于一视频帧。
  6. 根据权利要求4所述的方法，其特征在于，所述检测用户对目标视频的进度位置的调整，获取调整的进度段的步骤之前还包括：
    为所述目标视频建立相应的所述数据库，所述数据库为一维数组，所述一维数组的长度为所述目标视频中所包含的视频帧的总帧数。
  7. 如权利要求6所述的方法，其特征在于，所述为所述目标视频建立相应的所述数据库的步骤包括：
    获取所述目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组；
    获取用户初始播放所述目标视频时已缓冲的视频帧序列；
    依次计算已缓冲的所述视频帧序列中每一视频帧与相邻视频帧的图像差异值；
    计算所述图像差异值的方差，得到对应的帧差异值，并将所述帧差异值存储至所述一维数组中；
    判断所述一维数组中是否已存储有所述目标视频中每一视频帧对应的帧差异值，若否，则重复执行计算所述帧差异值的步骤；若是，则结束为所述目标视频建立相应的所述数据库的步骤。
  8. 如权利要求4所述的方法，其特征在于，所述将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示的步骤包括：
    将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
  9. 一种视频播放进度的预览装置，其特征在于，所述装置包括：
    检测模块，用于检测用户对目标视频的进度位置的调整，获取调整的进度段；
    匹配模块，用于根据所述进度段匹配对应的帧位置区间；
    查找模块，用于从预先建立的数据库中查找所述帧位置区间所包含的每一视频帧所对应的帧差异值，并从所述帧差异值中取数值较大的预设个数的帧差异值，所述帧差异值为任一视频帧与相邻视频帧的差异值，所述数据库中存储有所述目标视频中所有视频帧对应的帧差异值；
    显示模块，用于将查找到的预设个数的所述帧差异值对应的多个视频帧，以预览形式向用户进行显示。
  10. 根据权利要求9所述的装置，其特征在于，所述进度段为用户从触发开始的第一进度位置到触发结束的第二进度位置之间的进度位置区间，或者，所述进度段为目标视频的播放起始位置到触发结束的第二进度位置之间的进度位置区间；
    所述匹配模块，还用于根据所述第一进度位置匹配对应的第一帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述第一帧位置和所述第二帧位置之间的区间，其中所述第一帧位置和所述第二帧位置分别对应于一视频帧，或者，根据所述播放起始位置匹配对应的起始帧位置，根据所述第二进度位置匹配对应的第二帧位置，所述帧位置区间为所述起始帧位置和所述第二帧位置之间的区间，其中所述起始帧位置和所述第二帧位置分别对应于一视频帧。
  11. 根据权利要求9所述的装置，其特征在于，所述装置还包括：
    数据库模块，用于为所述目标视频建立相应的所述数据库，所述数据库为一维数组，所述一维数组的长度为所述目标视频中所包含的视频帧的总帧数。
  12. 根据权利要求11所述的装置，其特征在于，所述数据库模块包括：
    建立单元，用于获取所述目标视频所包含的视频帧的总帧数，建立一个初始化为空值，长度为所述视频帧的总帧数的一维数组；
    获取单元，用于获取用户初始播放所述目标视频时已缓冲的视频帧序列；
    第一计算单元，用于依次计算已缓冲的所述视频帧序列中每一视频帧与相邻视频帧的图像差异值；
    第二计算单元，用于计算所述图像差异值的方差，得到对应的帧差异值，并将所述帧差异值存储至所述一维数组中；
    判断单元，用于判断所述一维数组中是否已存储有所述目标视频中每一视频帧对应的帧差异值，若否，则返回获取单元重复计算所述帧差异值直至所述一维数组中存储有所述目标视频中每一视频帧对应的帧差异值。
  13. 根据权利要求9所述的装置，其特征在于，
    所述显示模块，还用于将查找到的预设个数的所述帧差异值对应的多个视频帧，以多宫格预览形式或卡片式预览形式向用户进行显示。
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