Classifications

• • 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
  • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
  • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
  • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs

Definitions

• the invention relates to the production of enriched media content and more particularly enriched media for managing the intellectual and educational heritage of businesses.
• Rich media content is particularly suitable for the presentation of a face-to-face event organized in front of an audience. These are most often conference-type events, technical convention, educational presentation. Where appropriate, events can be organized specifically for the production of an enriched media, such as a training session or a commercial presentation.
• FIG. 1 shows an example of rich media.
• An enriched medium 10 generally comprises several frames 1 1, 12, 13 in which are placed media, which are synchronized either from the actions of a user, or from the temporal sequencing of the presentation.
• the media is synchronized.
• the user can generally directly access a given portion of the enriched media through an index 13.
• An enriched media media are heterogeneous, that is to say of a different nature.
• An enriched media comprises audio and / or video stream media and at least one other media of a different nature, for example a textual media transparencies.
• an enriched media is set of heterogeneous media synchronized with each other and can be viewed interactively.
• Rich media production covers a very wide range of activities, from source creation, editing, indexing and scripting (defining the layout of the media) to dissemination and management (archiving, distribution, protection) of the enriched media heritage thus constituted.
• the segmentation of these activities still corresponds today to a segmentation of trades and tools used, the upstream part of the production cycle mainly in the audiovisual field, the part swallows mainly in the field of computing and telecommunications.
• a first example of richmedia content gives priority to the quality of the media, not to their scripting. This is typically institutional communication, with limited interactivity, such as that found in most DVD titles (with a few exceptions, a small number of chapters, no indexation, detailed navigation, resulting in a considerable loss of the qualities of knowledge vector richmedia contents). For example, for richmedia production of a one-day conference, consisting of 10 richmedia presentations of half an hour each, it will be possible to select the presentation to view, but not access to a finer indexing within each presentation.
• a second example of richmedia content gives priority to interactivity, to the detriment of the overall quality of the media. These are typically courses broadcast live from a university with a webcam, rebroadcast off-line but without editing.
• FIG. 2 represents a diagram of the steps of an enriched media editing process according to the prior art. This process is generally composed of three main steps: the collection of native media 10,210, the edition of media 220 and the synchronization of these media 230.
• Capture 212 that is recording with at least one camera and a microphone for film-type media.
• the capture is necessarily accompanied by an acquisition phase 213 which can be simultaneous (direct storage on hard disk in case of digital recording directly on disk) or delayed
• the different native media are edited separately.
• the edition depends on the type of each media.
• the secondary media are mainly of the presentation type
• Audiovisual-type media are edited using a virtual editing tool, such as Avid Media Composer or Final Cut Pro, based on the metaphor of a timeline and synchronized audio and video tracks on this timeline. Audiovisual media publishing usually includes the following tasks:
• a first task is to re-align the tracks in case the recording has been done in multi-camera without live mixing. For each registration, it is necessary to locate a registration point (most commonly: sound clap, accented consonant or photo flash, if not precise movement).
• a second task is to visualize in detail the recording of each conference, to identify the cuts to be made, then to make these cuts. It is on this occasion that the indexes that will be used in the synchronization step 230 are identified to create or modify hypermedia navigation links.
• a third task is to choose which image to show at each moment (choice of the plan) in case the recording has been done in multi-camera.
• a fourth task is to add the necessary effects, such as fades at the beginning and end of each conference.
• a fifth task is to adjust the sound levels.
• a sixth task consists in exporting the final result of this step 220 in a format adapted to the synchronization step 230.
• the synchronization step 230 of the media comprises their spatial integration and their time synchronization.
• the spatial integration makes it possible to position frames in which will be placed the media, which will be synchronized either from the actions of the user, or from the temporal sequencing.
• Frames hosting static secondary media allow synchronization by interactive (random) event. The user typically asks to go from one slide to the next slide by selecting the corresponding button. In this case, the audiovisual media and secondary media of other executives are notified of this event and synchronize accordingly.
• the frames hosting the audiovisual media allow synchronization 232 by prior temporal indexing 231 (sequential). Each index typically corresponds to a moment in the film where the presenter has moved to the next slide. In this case, the static computer media of other executives are notified of this sequence and synchronize accordingly.
• time indexing 231 audiovisual media It is therefore necessary firstly to perform time indexing 231 audiovisual media. This is done by asking an index for each transition. This gives a list of indexed (list of time codes). These indexes and time codes are previously recorded in the editing step, but without the possibility of checking the final rendering, which is only possible in the last step. Conversely, if it is necessary to correct this data from the controllable rendering in this last step, these corrections will have to be taken again during a return to the editing step.
• the spatial integration 233 it is necessary for the spatial integration 233 to define the different scenes (templates) in which the synchronized media will be placed. There is, for example, one main stage for the global conference, and as many secondary scenes as sessions inside the workshop.
• Document WO 2004/062258 discloses a method for producing a multimedia edition from oral services on the basis of a previously recorded audio / video stream and complementary documents. This method notably comprises a step of collecting and processing heterogeneous data possibly associated with time codes. The collected data makes it possible to generate selective access tables allowing targeted access to sequences of the audio / video stream.
• Document US2002 / 0133520 discloses a method for preparing a multimedia recording of a live presentation. This method allows automatic synchronization between an audio / video recording and the transparencies commented during the presentation. In this method, the possibility of editing media in post-production is not taken into account. Hence the possible use of this approach in academic circles, but unfit for the constraints of control of communication in the industrial environment.
• the invention aims to overcome the problems mentioned above by proposing a method, a device and a system for the integrated production of enriched media.
• the object of the invention is to facilitate the process of creating enriched media by facilitating scripting, maintaining good media quality and sparing media processing resources.
• the subject of the invention is a method for editing an enriched medium from an oral performance, said enriched medium comprising a first media of the audio and / or video stream type and at least one second medium each of said media being synchronized, the first and second media being heterogeneous, said method comprising a step of collecting and acquiring (301) in digital form media and synchronization information, said acquired media being called native media, said characterized in that it further comprises the following steps:
• proxy media being a version, adapted to the edition, of the native media with which it is associated
• simultaneous editing of the synchronized proxy media and synchronization information including modifying at least one proxy media, updating the synchronization information of each of said proxy media, generating editing events for each modified proxy media, an editing event including a proxy media change, and a time code,
• the simultaneous editing step comprises an automatic indexing step from the synchronization information, the synchronization information defining synchronization points, an index being created for each of said synchronization points.
• the enriched media being intended to be read on a given rich media player
• the step of creating the enriched media further comprises the creation, from the native media, compatible media with the reader and layout of media and indexes according to the organization of the reader in a given format.
• the invention has the advantage of being able to be implemented without qualified personnel to edit the enriched media. The generation of enriched media can thus be carried out by an end user or by a specialist in the field of oral presentation.
• the invention provides a significant time and resource saving due to the simultaneous edition of the synchronized media, allowing the deletion of the iterations between the steps of the editing method according to the prior art. Finally, it also brings a significant time saving due to the use of a single step of final generation of the support.
• the invention is based on the integration of the editing step 220 and the media synchronization step 230, made possible by the replacing the native media collection step 210 with a multimedia production step, in which all the media are acquired in a synchronized manner, during the event organized in front of an audience, so as to have the initial synchronization of the media as soon as the capture.
• the invention therefore has the advantage of grouping all the engineering work within a single editing step, this step using the editing device according to the invention.
• the editing device of the invention allows, on the one hand, at any time, to edit the media, without having to change environment, so without having to perform expensive format conversions (these changes are in fact performed on proxy media, from which it will be possible to automatically postpone them to native media).
• the invention also makes it possible at any time to modify the synchronization on this basis, without having to change the environment, without having to perform expensive format conversions.
• the invention has the advantage of giving the opportunity for the neophyte to perform this work, without having to have knowledge or audiovisual or computer.
• the invention will be better understood and other advantages will appear on reading the detailed description given by way of non-limiting example and with the aid of the figures among which:
• FIG. 1 already presented, represents an example of enriched media.
• FIG. 2 already presented, represents a diagram of the steps of an enriched media editing method according to the prior art.
• FIG. 3 represents a diagram of the steps of the enriched media editing method according to the invention.
• FIG. 4 represents an exemplary embodiment of the editing device according to the invention.
• FIG. 5 represents an exemplary implementation of the device according to the invention.
• FIG. 6 represents an exemplary embodiment of the system according to the invention.
• FIGS. 7a and 7b respectively represent a diagram of the steps of an enriched media editing method according to the prior art and a diagram of the steps of the enriched media editing method according to the invention.
• the production of an enriched medium according to the invention comprises the following steps:
• proxy media the collection of native media and native synchronization information and the generation of adapted media called proxy media
• FIG. 3 represents a diagram of the steps of the method for editing enriched media from an oral performance according to the invention.
• An example is an oral performance such as a lecture at which the speaker comments on a digital presentation.
• the method comprises a step of collecting and acquiring 301 in digital form of media and synchronization information.
• the media thus acquired are called native media.
• This step includes a capture phase to obtain a native media type audio / video stream.
• This step also includes a phase of collecting synchronization information for the other media.
• the synchronization information includes, for example, a series of time codes associated with a reference to the media, in the case present, a transparency number and optionally other data (eg index label).
• the method of the invention also includes a step of creating a proxy media 302 for each of the native media.
• a proxy media of a native media is a version adapted to the edition, for example a compressed version of said native media, allowing the creation of editing events in a light environment, which events will be used for the postponement of these editions on the native media.
• the proxy media is, for example, a compressed audio and / or video stream and having a lower resolution than the native media.
• an example of proxy media may be that of transparencies cleared of their graphic information, which allows in a lighter environment the editing of textual parts, before their transfer to native transparencies.
• the method according to the invention also comprises a step of simultaneous editing of the synchronized proxy media 303 and synchronization information.
• the user is required to apply different editing functions to different proxy media. These editing functions result in the modification of at least one of these proxy media and its impact on other media.
• One of the peculiarities of the invention is that these editing functions maintain the synchronization of the proxy media by updating the synchronization information.
• the application of the editing functions generates editing events for each of the modified proxy media, an editing event indicating, for example, a modification on a proxy medium and one or more time codes.
• the cut function In the case of an editing function, such as a section in the video, that can edit multiple media, the cut function generates a cut event for other media, such as transparencies, to maintain synchronization. The time codes of each media are recalculated to account for the editing event.
• an edit function can only impact a single medium, for example, adjusting the audio / video stream's audio volume.
• the synchronization of the proxy media is not affected.
• the editing tasks for the audio / video stream are of the same nature as those of the prior art but they are applied simultaneously to all the proxy media.
• the method according to the invention also makes it possible to edit the synchronization information.
• the synchronization information defines synchronization points corresponding to the transition from one transparency to another.
• One or more synchronization points are often generated by mistake during the sensed presentation (untimely passage to the next transparency, followed by a return to the initial transparency). It is then possible to delete all or part of these synchronization points.
• the initial position of the sync points may require moving.
• synchronization points initially created with portions of video deleted during editing are also automatically deleted. It is also possible to create new synchronization points.
• the method of the invention also allows the creation, modification or deletion of indexed and their hierarchization. It is possible to create, modify or delete an index on all or part of synchronization points, and to attach a label.
• the hierarchy allows in the final rendering to have more or less detailed views of the indexes according to their level of depth in the hierarchy.
• transparent secondary media it is possible for transparent secondary media to automatically create the indexes during initial synchronization point registration, and to use this native indexing as a starting point for editing indexes.
• the method according to the invention also comprises a step of creating the enriched media 304 by reporting the editing events on each of the corresponding native media. For example, an edit event representing a cut applied to a proxy media during the editing step, defined by two time codes indicating the beginning and end of the cut, will be applied to the corresponding native media so that get the same effect.
• FIG. 4 represents an exemplary embodiment of the editing device according to the invention.
• the device according to the invention 400 comprises: means for receiving proxy media 401, a proxy media being an adapted version of a native media with which it is associated,
• a module for the simultaneous editing of the proxy media 403 and synchronization information said editing module comprising means for displaying the proxy media and synchronization information.
• the module for editing further comprises means 404 for editing and displaying indexed and means for automatically creating the indexes from the synchronization information.
• the editing device is a computer medium that can take the form of, for example, a CD ROM allowing the execution
• Figure 5 shows an example of implementation of the means
• the display device 500 of the enriched media editing device according to the invention.
• the display means comprise a first frame 501 allowing a preview of the enriched medium and a second frame 502 representing an enriched time line.
• Rich media includes a 503 video, 504 transparencies
• the second frame 502 includes a time line 509 and then different lines representing the sequencing of the media along that timeline 509.
• a first line 506 represents the sequencing of the transparencies and indicates when the transparency will be displayed.
• the editing device comprises means 51 1 for modifying
• a third line 508 indicates when the different sections are made in the presentation or any other audiovisual editing operation.
• a cursor 510 placed on the timeline 509 indicates when the pre-display of the enriched media presented in the first frame 501 is located. The movement of the cursor along the timeline allows the user to access the different parts. enriched media.
• the second frame makes it easy to view and edit how media is synchronized.
• the display means further includes a read button for viewing a preview of the final result of the enriched media in the first frame 501.
• the enriched media comprises five chapters (Introduction, Richmedia, Demo, Application and Conclusion).
• the first line 506 comprises seven transparencies.
• transparencies 2 and 3 are displayed in the introduction chapter, transparencies 4, 5 and 6 in the Richmedia chapter and transparency 7 in the Demo chapter.
• the invention also relates to a system for producing enriched media from an oral performance.
• FIG. 6 represents an exemplary embodiment of the system according to the invention.
• Such a system comprises computer implementation means comprising processing and storage modules and display means.
• Such a system for editing an enriched media from an oral performance includes:
• means for the acquisition 603 of synchronization information for example a device recording a time code during a change of transparency of the speaker,
• means for creating 602 proxy media from native media means for editing the proxy media and synchronization information, said editing means generating editing events
• the means for editing comprising the device for the edition 400 of an enriched media according to the invention, means for the generation of enriched media (605) from the editing events and the corresponding native media, these means being, for example, a module 605 for the generation of enriched media creation orders 406 and setting up a rich media player 607 from the editing events, timing information, and corresponding native media.
• the means for the acquisition 603 of synchronization information, for the creation 602 of proxy media and for the edition of the proxy media as well as the module for generating creation orders are implemented by the computer processing means of the system.
• Rich media creation orders are orders to apply proxy media editing events to native media. These creation orders can come from standards.
• EDL Decision List Edition
• An EDL includes a list of editing events associated with a time code.
• creative orders are defined in a more specific way. For example, in the case of transparencies whose proxy is a text file, the creation orders are made in the form of a macro command modifying the transparencies from the corrections applied to the text file.
• the editing device is independent of the enriched media players. Nevertheless, a parameterization phase is necessary so that the enriched media generated is compatible with a given reader.
• This setting consists in generating, from the native media, media compatible with the reader and arranging media and indexes according to the organization of the reader.
• FIG. 7a represents a diagram of the steps of an enriched media editing method according to the prior art.
• the method consists of separately editing each of the media (Media-i, Media 2 , ... and Media n ) and each of the respective indexes (h, i 2 , ..., and i n ) for these media.
• a modification of a index must be reported manually on all other indexes.
• the edition is represented by a circular arrow on each of the media and each of the indexes.
• the method results in the creation of an enriched media including a container 701 grouping the different media (Media-i, Media 2 , ... and Media ⁇ ).
• An index i provides synchronized access to different parts of the media.
• FIG. 7b represents a diagram of the steps of the enriched media editing method according to the invention.
• the method consists in uniquely editing proxy media (Media'i, Media ' 2 , ... and Media' ⁇ ) grouped together in a lightweight container 702, which is a version adapted to the simplified edition of the container. final 701 of the enriched media.
• a unique index i ' is edited. This feature simplifies the editing work and in particular removes the problem of postponing changes from one index to another during editing.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Management Or Editing Of Information On Record Carriers (AREA)
• Television Signal Processing For Recording (AREA)

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• 2008
  • 2008-12-23 FR FR0807406A patent/FR2940481B1/fr not_active Expired - Fee Related
• 2009
  • 2009-12-22 WO PCT/EP2009/067726 patent/WO2010072747A2/fr not_active Ceased
  • 2009-12-22 EP EP09796728A patent/EP2368245A2/de not_active Withdrawn

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