FR3120491A1 - Process for rendering audiovisual streams, electronic terminal and corresponding computer program product - Google Patents

Abstract

Audiovisual stream rendering method, electronic terminal and corresponding computer program product The invention relates to a method implemented in an electronic terminal comprising: obtaining an audiovisual stream; obtaining a text stream associated with the audiovisual stream; a control of the rendering of said text stream during the rendering of the audiovisual stream, according to a dynamic context of rendering of the audiovisual stream. The invention also relates to the electronic terminal, the computer program product and the corresponding medium. Figure for the abstract: Fig. 3

Description

Process for rendering audiovisual streams, electronic terminal and corresponding computer program product

1. Technical area

This application relates to the field of processing an audiovisual stream with a view to its rendering on a user interface coupled to an electronic terminal and relates in particular to a process for rendering multimedia streams, as well as an electronic terminal, a program product of computer and a corresponding medium.

2. State of the art

Many electronic terminals allow users to access audiovisual streams. By audiovisual is meant here a stream having an audio component and/or a video component. It may be for example a stream conveyed during a synchronous communication between terminals (for example during a voice call (without video component) or a video call between the two terminals), or during an asynchronous communication (for example in a voice or video message) or even when consuming content made available on an audiovisual content server (such as a download or real-time streaming server (or " streaming” according to the English terminology).

A user can access an audiovisual stream via a fixed and/or mobile terminal, such as a personal computer, a tablet, a smart telephone (or "smartphone") and/or a connected object.

The purpose of this application is to propose improvements aimed at improving the user experience of a user of an electronic terminal accessing an audiovisual stream.

3. Disclosure of Invention

The present application aims to improve the situation using a method implemented at least partially in an electronic terminal and comprising:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• a control of the rendering of said text stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream.

Indeed, the experience of a user consuming an audiovisual stream can fluctuate depending on the physical context in which this consumption takes place.

As a result, it is not uncommon for a user to be forced, in the case of a voice communication, to ask his interlocutor to repeat his remarks, or even to suspend the communication, until he has moved in a geographical area more suitable for voice communication (for example a geographical area offering better network coverage and/or located in a less noisy environment), or to end the call.

At least certain embodiments of the present application propose to remedy such situations by rendering, depending on the rendering context of the audiovisual stream being consumed, of an additional stream capable of facilitating the understanding by a user of the stream consumes.

Obtaining means in particular receiving, acquiring and/or reading from a storage medium accessible to the terminal.

In at least some embodiments, said rendering control of said text stream comprises displaying and/or interrupting the display of at least part of said text stream on at least one screen coupled to said electronic terminal.

Such embodiments, where the complementary text stream is rendered only conditionally, can thus make it possible to avoid devoting resources (for example in terms of output interface or processing time) to rendering a text flow when it does not seem necessary. Indeed, as can easily be understood in the case of a terminal equipped with a small screen such as a smartphone, the display of a text on this screen during the viewing of a multimedia stream could be to the detriment of the visibility of a video component of this stream. It is also likely to divert the user's attention from the audiovisual stream consumed.

In at least some embodiments, said rendering control of said text stream comprises displaying and/or interrupting the display of at least part of said text stream on at least one screen coupled to said electronic terminal.

In at least certain embodiments, said rendering control of said textual stream comprises rendering and/or interruption of rendering of an audio stream obtained by transformation of the textual stream by voice synthesis.

In at least certain embodiments, said rendering control of said text stream takes into account at least one contextual element belonging to a group comprising:

• an ambient audio and/or visual noise level of said electronic terminal;
• a variation of at least one audio and/or video component of said audiovisual stream;
• a rendering capability of said terminal;
• an event detected via a user interface coupled to said electronic terminal;
• a positioning of said terminal.

Thus, the rendering of the text stream can be implemented in different situations, reflecting a non-optimal physical or network context of the terminal.

The activation of an interfacing element of the device such as an input element (activation of a key on the keyboard or of a touch screen of the terminal), or output (loudspeaker) can be the implicit expression or explicit of a need of the user of the terminal for assistance in understanding the communication, or on the contrary of the end of such a need, and therefore of a command to render or end rendering of the stream textual.

In at least certain embodiments, the method comprises reception of said audiovisual and/or textual stream, from at least one remote electronic device, accessible via at least one communication network.

In certain embodiments, the two streams can be received via at least one communication network. In particular, the text stream can be received, in association with the audiovisual stream, for example because it corresponds to one of the components of the audiovisual stream, or to a component of a more complex stream to which the audiovisual stream belongs. Thus, the text stream can be conveyed in metadata of the audiovisual stream. The textual stream can also be received independently from the audiovisual stream (for example the two streams can be received via distinct communication networks, protocols and/or distinct devices).

In other embodiments, the textual stream can be generated by said terminal, during reception of the audiovisual stream, or even after its reception, with deferred rendering of the audiovisual stream.

In at least some embodiments, obtaining the textual stream includes an at least partial transcription of at least one audio and/or video component of said audiovisual stream.

The text stream can for example be obtained by a voice-to-text conversion technique (“STT” for “Speech To Text”) of an audio component of the audiovisual stream. It can also be a verbatim transcript of a speech in sign language or a summary of a video scene that does not include dialogue.

In at least some embodiments, the method includes modifying said transcribed component.

Indeed, certain text streams, obtained for example by automatic conversion, may include conversion errors. In addition, textual streams obtained from a "chopped" component of the audiovisual stream (in the event of poor network coverage for example, or in the event of ambient noise interfering with the acquisition of the audiovisual stream) can reveal themselves chopped”. (Simply say, such streams can have “holes”). Therefore, certain embodiments of the present application may comprise an analysis, for example a semantic analysis, and/or implement an artificial intelligence brick, suitable for detecting conversion errors and/or holes” in the transcribed component and a consequent modification of this transcribed component. The analysis can also produce a summarized textual version of the transcribed component, for faster consideration by a user for example.

In at least certain embodiments, said text stream is accessible from an audiovisual content server of said communication network.

The audiovisual stream can for example correspond to content broadcast in real time (“streaming”) on the terminal.

In at least certain embodiments, said text stream is accessible from another terminal of said communication network.

The audiovisual stream can for example correspond to a media stream received during a communication between at least two terminals, for example an audio and/or video call.

The characteristics, presented separately in the present application in connection with certain embodiments of the method of the present application can be combined with each other according to other embodiments of the present method.

According to another aspect, the present application also relates to an electronic terminal adapted to implement the method of the present application in any one of its embodiments. For example, the present application thus relates to an electronic terminal comprising at least one processor configured for:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• a control of the rendering of said text stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream.

The present application also relates to a computer program comprising instructions for the implementation of the various embodiments of the above method, when the program is executed by a processor and a recording medium readable by an electronic terminal and on which is recorded the computer program.

For example, the present application thus relates to a computer program comprising instructions for the implementation, when the program is executed by a processor of an electronic terminal, of a method comprising:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• controlling the rendering of said textual stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream.

For example, the present application also relates to a recording medium readable by a processor of an electronic terminal and on which is recorded a computer program comprising instructions for the implementation, when the program is executed by the processor, of a method comprising:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• a control of the rendering of said text stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream.

The programs mentioned above may use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in partially compiled form, or in n any other desirable shape.

The information carriers mentioned above can be any entity or device capable of storing the program. For example, a medium may comprise a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or even a magnetic recording means.

Such a storage means can for example be a hard disk, a flash memory, etc.

On the other hand, an information medium can be a transmissible medium such as an electrical or optical signal, which can be conveyed via an electrical or optical cable, by radio or by other means. A program according to the invention can in particular be downloaded from an Internet-type network.

Alternatively, an information medium may be an integrated circuit in which a program is incorporated, the circuit being adapted to execute or to be used in the execution of any one of the embodiments of the method which is the subject of the present application for patent.

4. Brief description of drawings

Other characteristics and advantages of the invention will appear more clearly on reading the following description of particular embodiments, given by way of simple illustrative and non-limiting examples, and the appended drawings, among which:

There presents a simplified view of a system, cited by way of example, in which at least certain embodiments of the method of the present application can be implemented,

There presents a simplified view of a device suitable for implementing at least certain embodiments of the method of the present application,

There presents an overview of the process for processing the present application, in some of its embodiments

There outlines the method for processing the present application, in other embodiments

5. Description of embodiments

The present application aims to help a user (or a group of users) of at least one electronic device, such as a communication terminal, to understand (that is to say to understand more completely and/or more quickly ) an audiovisual stream rendered (i.e. rendered) at least partially via this device, and this despite disturbances linked to the context of consumption of the audiovisual stream and likely to deteriorate an audio and/or video component of the stream and/or its rendering.

In the present application, context (or conditions) of rendering (or consumption) of the audiovisual stream is understood to mean the physical and network environment of the device, during its restitution of the audiovisual stream. This environment includes the rendering capabilities of the device (in terms of user “output” interfaces, as detailed further below) and the environment external to the device.

Thus, according to a first example, an audio component of the audiovisual stream can become difficult to hear in the presence of ambient noise (for example, during an audio and/or video call made from a public works site).

According to a second example, when the terminal, or one of its interlocutors, is located in an area of weak network coverage, it is possible that an audiovisual stream reaches the terminal in a "choppy" way, thereby making it difficult to understand sentences of an audio component or gestures (translating its sentences in particular) in a video component .

Thus, it is not uncommon for the quality of the rendering of the audiovisual stream to vary over the rendering. For example, in the case of a telephone call, the quality of the audio parameters of the call can be very good at the start of the call, to deteriorate rapidly depending on the mobility of the interlocutors, which can have impacts in term of loss and/or deterioration of the data transmitted (due for example to the quality of a communication network through which the audiovisual stream passes), or the presence of ambient noise in the environment of one of the interlocutors.

Similarly, when consuming content via a streaming solution (in public transport in particular), a consumer may be momentarily disturbed by his personal physical environment (presence of a noisy group of passengers around him for example, or voice announcement on loudspeaker for example) or because of passing through areas with poor network coverage.

The present application offers a user of an electronic device an automatic, or quasi-automatic implementation solution, allowing him to learn at least partially of the information conveyed in a consumed audiovisual stream, when he has to deal with such hazards. The proposed solution also makes it possible not to interrupt (or suspend) the consumption of the audiovisual stream and therefore not to disturb a dynamic of exchange between interlocutors or a dynamic of consumption of streaming content.

Thus, according to at least certain embodiments, the rendering method of the present application comprises, in parallel with a restitution of the audiovisual stream, and depending on the physical and network context of the device, a restitution of a textual stream associated with this stream audio-visual. It may for example be a text stream corresponding to at least part of an audio component of the audiovisual stream. For example, the text stream may correspond to voice type data of an audio component of the audiovisual stream.

The audiovisual stream and/or the textual stream may have been generated locally, be obtained via a local or remote storage means or via a communication network (for example from a terminal transmitting the stream). In general, the text stream may have been generated, according to the embodiments, during various processing of the audiovisual stream. By processing, we mean various tasks for the at least partially automatic manipulation of at least part of an audiovisual stream, such as for example its generation, its enrichment, its encoding and/or its decoding, its transmission and/or its reception. , and/or its rendering.

We now describe, in connection with the , in more detail this application.

There depicts a telecommunications system 100 in which certain embodiments of the invention may be implemented. The system 100 comprises one or more electronic devices, at least some of which can communicate with each other via one or more communication networks 120, possibly interconnected, such as a local network or LAN (Local Area Network) and/or a wide area type network, or WAN (Wide Area Network). For example, the network may include a corporate or home LAN network and/or a WAN network of the internet or cellular type, GSM - Global System for Mobile Communications, UMTS - Universal Mobile Telecommunications System, Wifi - Wireless, etc.) .

The system may also include network management and/or interconnection elements (not shown).

As illustrated in , the system 100 can also include several electronic devices, such as a terminal (such as a laptop computer 110, a smartphone 130, 132, 134, a tablet 136), and/or a server 140 (for example an audiovisual content server ), a storage device 150 (such as an audiovisual content storage device). These electronic devices can be associated with at least one user 160, 162, 164, 166, some of the electronic devices 110, 130 being able to be associated with the same user 160.

At least some of the user devices allow them to consume audiovisual streams accessible via the communication network 120 (for example content available on a content server 140 or on a remote storage space 150). Certain devices can also allow users to exchange an audiovisual stream between them, for example after establishment of a communication between these devices.

There illustrates a simplified structure of an electronic device 200 of the system 100, for example the device 110, 130, 132, 134, 136 of the , adapted to implement the principles of this application.

The device 200 notably comprises at least one memory M 210. The device 200 can notably comprise a buffer memory, a volatile memory, for example of the RAM type (for "Random Access Memory" according to the English terminology), and/or a non-volatile memory. volatile (for example of the ROM type (for "Read Only Memory" according to the English terminology). The device 200 can also comprise a processing unit UT 220, equipped for example with at least one processor P 222, and controlled by a program computer PG 212 stored in memory M 210. On initialization, the code instructions of the computer program PG are for example loaded into a RAM memory before being executed by the processor P. The at least one processor P 222 of the processing unit UT 220 can in particular implement, individually or collectively, any of the embodiments of the method of the present application (described in particular in relation to the ), according to the instructions of the computer program PG.

The device can also comprise, or be coupled to, at least one I/O input/output module 230, such as a communication module, allowing for example the device 200 to communicate with other devices of the system 100, via wired or wireless communication interfaces, and/or such as an interfacing module with a user of the device. Such an interface module is also called more simply in this application "user interface".

By user interface of the device is meant, for example, an interface integrated into the device 200, or part of a third-party device coupled to this device by wired or wireless communication means. For example, it can be a secondary screen of the device or a set of speakers connected by wireless technology to the device

A user interface can in particular be a so-called “output” user interface, suitable for rendering (or controlling rendering) of an audiovisual and/or text stream. Examples of output user interface of the device include one or more screens, in particular at least one graphic screen (touchscreen for example), one or more loudspeakers, a connected helmet.

By rendering, we mean here a restitution (or “output” according to the English terminology) on at least one user interface, in any form, for example comprising textual, audio and/or video components, or a combination of such components.

Furthermore, a user interface can be a so-called “input” user interface, suitable for acquiring a command from a user of the device 200. It can be in particular an action to be performed in connection with an item returned, and/or a command to be transmitted to a computer application used by the device 200, for example an application running at least partially on the device 200 or an "online" application running at least partially remotely, such as on server 140 of system 100. Examples of device 200 input user interfaces include a sensor (such as a position sensor, a motion sensor, a temperature sensor , a gyroscope, etc.), an audio and/or video acquisition means (microphone, camera or webcam, for example), a keyboard, a mouse, a touch screen. The interface of the device 200 can for example be adapted to the detection of a position and/or a movement of the device, such as a positioning of the device capable of allowing consumption by a user of a content rendered on a screen of the device (such as a reading of a text displayed on this screen). It may thus be an interface (camera, gyroscope, etc.) able to allow detection of a movement of the device between a first listening position, in which an audio output interface of the device is located near from a user's ear, to a second listening position, in which a screen coupled to the device is in the field of view of a user of the device (for example, a position in which the screen faces the face of 'an user).

It can also be one or more microphones, coupled for example to a voice analysis module of the device, so as to detect, for example, that a user of the device is asking a remote interlocutor with whom a voice communication is established. via the device, to repeat what he has just said.

Said at least one microprocessor of device 200 can in particular be adapted for:

• obtaining an audiovisual stream;
• obtaining a text stream associated with the audiovisual stream;
• a control of the rendering of said text stream during the rendering of the audiovisual stream, according to a dynamic context of rendering of the audiovisual stream.

Some of the above input-output modules are optional and may therefore be absent from device 200 in some embodiments. In particular, if the present application is sometimes detailed in connection with a device communicating with at least one other device of the system 100, the method can also be implemented locally by a device, for rendering for example of an audiovisual stream stored on the device.

On the contrary, in some of its embodiments, the method can be implemented in a distributed manner between at least two devices 110, 130, 132, 134, 136, 140 and/or 150 of the system 100.

In the present application, the term "module", the term "component" or the term "element" of the device is understood to mean a hardware element, in particular wired, or a software element, or a combination of at least one hardware element and at least one software element. The method according to the invention can therefore be implemented in various ways, in particular in wired form and/or in software form.

There illustrates some embodiments of the method 300 of the present application. The method 300 can for example be implemented by the electronic device 200 illustrated in .

In the example shown in , the method comprises obtaining 310 an audiovisual stream. It may be, for example, an audio and/or video stream received in the context of an audio and/or video communication established between a user of the device 200 (for example the user 160 of the device 130 of the ) and another user of another device (for example the user 162 of the device 132 of the ). According to another example, it may be content accessible in streaming to the device 200 from a server (for example the server 140 of the ) or accessible, locally to the device 200 or via the communication network, from a storage medium (for example, the storage medium 150 of the ).

In the example shown in , the method may comprise, in addition to obtaining 310 the audiovisual stream, obtaining 320 a textual stream associated with the audiovisual stream. Thus, in certain embodiments, an audio component acquired by a microphone of a remote device can be encoded in digital format before being transmitted to the device 200. A text stream can for example be obtained by a conversion algorithm of voice to text called "STT" (from the English "Speech To Text"), and/or techniques of semantic analysis, artificial intelligence, and/or natural language processing known by the acronym NLU ( for “Natural Language Understanding” in English) from the audio component of the audiovisual stream encoded in digital audio format. These techniques can also be used in addition to an STT conversion, so as to correct, complete and/or summarize the text stream resulting from the STT conversion. This may include, for example, looping missing (or badly converted) parts of the audio stream. In some embodiments, the text stream can provide a more or less concise summary of the audiovisual stream, for example a succession of summaries of successive "sections" of the audiovisual stream, so as to facilitate the user's understanding, the while minimizing the visual disturbance that a reading of the text stream could cause while the audiovisual stream is being consumed.

The textual stream can be generated for example by the remote device, then transmitted to the device 200 during the transmission of the audiovisual stream. According to the embodiments, the two streams can be transmitted in the form of distinct, parallel streams, or in the same stream integrating both the audiovisual stream and the textual stream.

Generating a text stream as close as possible to the acquisition of the audiovisual stream, and in particular before its transmission over a communication network (and therefore potentially its deterioration), can notably help to obtain a text stream closer to the acquired audiovisual stream. In addition, such an embodiment is not penalizing in terms of network occupation, the bandwidth necessary for the transmission of the text stream, in parallel with the audiovisual stream, being very low compared to the bandwidth necessary for the transmission of the stream. audiovisual itself. The transmission of a text stream is also often less impacted than the transmission of an audio or video stream by problems of network quality fluctuation.

In a variant, the text stream can be obtained via a third-party device, other than the device 200 and the remote device generating and/or transmitting the audiovisual stream.

In certain embodiments, adapted in particular to asynchronous communication between at least two devices, the textual stream can be transmitted before the transmission of the audiovisual stream (or before the rendering of the audiovisual stream on the device 200). The textual stream can also be generated by the device 200 receiving the audiovisual stream, during the obtaining of the audiovisual. It can also, in the case of rendering subsequent to the transmission of the audiovisual stream, be generated by the receiver device after obtaining the audiovisual stream t prior to the rendering of the audiovisual stream.

Such embodiments offer the advantage of having a backup text flow in a certain way, in the event of degradation of the rendering of the audiovisual flow.

As illustrated in , during the rendering 330 of the audiovisual stream, the method comprises an analysis 331 (or monitoring) of the rendering context of the audiovisual stream, taking into account one or more parameters representative of a physical and/or network environment of the device, during its restitution of the audiovisual stream. The physical environment of the device can be analyzed for example via sound and/or luminosity parameters, or events detected via at least one input interface of the device.

The analysis 331 can in particular be carried out "on the fly", continuously or iteratively, to dynamically detect during the rendering of the audiovisual stream the occurrence of events likely to harm the experience of a user during its consumption of the audiovisual stream and to control the rendering of the textual stream obtained as a result, or the absence or the end of such events. Such an event can be for example a variation (alteration or improvement) of the quality of the audiovisual stream received (translated for example in terms of percentage of audiovisual data packets received, lost or retransmitted at a current instant, etc.) or a variation (alteration or improvement) of a reproduction environment (for example an increase in an ambient noise level making it difficult to understand an audio component of the audiovisual stream or strong, sudden variations in brightness in an environment ambient (beams of car headlights for example) making it difficult to view the details of certain videos commonly restored from the audiovisual stream.

Dynamic analysis can therefore implement techniques for analyzing the quality of an audio and/or video stream, or the quality of data transmission, the quality of reproduction of an audio stream and/or video. Thus, for example, an ambient noise level can be measured via a microphone of the device 200, rendering being considered as degraded when the ambient noise level exceeds a first threshold value (for example 70, 80 or 90 dB). In some embodiments, the first value may be constant (thus it may be a constructor parameter). It can also be obtained by configuration, for example via prior calibration by a user of the device. Such an embodiment can make it possible to take into account the particularities of a user (in terms of hearing and auditory and/or visual sensitivity for example).

In some embodiments, the first value may vary dynamically. For example, it may depend on certain characteristics of the audiovisual stream to be restored, likely to have an impact on the ease of understanding of the restored stream. For example, it can depend on a frequency of a restored voice and vary depending on whether the voice is more or less low-pitched or high-pitched.

In a variant, adapted in particular to embodiments where the text stream is received together with the transmitted audiovisual stream, the analysis may comprise obtaining a second text stream from the audiovisual stream received (or being received) and detection of a degradation or an improvement in the quality of the audiovisual stream taking into account the existence and the quantity of differences between the textual stream received with the second stream obtained. Such an embodiment can make it possible to detect in a simple manner a degradation or an improvement in the audiovisual stream to be rendered, without having to carry out an in-depth analysis of the transmission quality of the audiovisual stream.

The dynamic analysis 331 can also take into account events in the physical environment of the device 200, such as for example certain movements of the user (for example frowns detected using a camera) or a modification of the relative positioning of a user and the device (moving a smartphone-type device away from a user's ear, for example), likely to reflect a need and/or an implicit request for assistance from a user, or even on a acquisition of a more explicit command from a user (such as pressing a key on a keyboard or an area of a touch screen of the device, or a gesture or voice command dedicated to rendering a text stream ). As a result, such movements are in the present application assimilated to a degradation of the rendering context of the audiovisual stream.

On the other hand, the analysis 331 can of course make it possible to detect the occurrence of events reflecting an improvement in the conditions of consumption of the audiovisual stream, or a desire expressed implicitly or explicitly by a user not to consume a stream textual (such as if the user holds their phone to their ear).

According to , as long as the analysis 331 does not detect 332 the occurrence of an event reflecting a degradation of the rendering context of the stream consumed (such as a user action as mentioned above), the method comprises a restitution 333 of the audiovisual stream alone (without coupling with rendering of a text stream). Upon detection 332 of an event reflecting a degradation of the stream consumed, the method 300 comprises a joint rendering 335, 336 of part of the audiovisual stream and of part of the textual stream obtained and associated with this part of the stream audio-visual. These may be restitutions on the same output interface of the device (the text stream being for example rendered superimposed with a video component of the audiovisual stream) or restitution on distinct output interfaces of the device. Thus, the audiovisual stream can be a purely audio stream played back via an audio headset coupled to the device, the textual stream being played back on a screen of the device, or the audiovisual stream can be played back at least partially via a main screen coupled to the device, the text stream being rendered on a secondary screen of the device, distinct from the main screen and of optionally reduced dimensions with respect to this main screen (or vice versa).

In certain embodiments, the method may comprise a transformation into audio form by voice synthesis (“Speech To Text” (STT) according to the English terminology) of the text stream and an audio rendering of the transformed stream. Such an embodiment can be adapted to one of the rendering situations of a chopped audiovisual stream (the transformed stream taking over during the periods when an audio component of the stream is absent or unintelligible), in particular when the environment of the device is not suitable for textual reproduction (environment too bright to allow a user to read a text, or device not comprising a screen).

Optionally, the method can include before or at the time of rendering of the part of the text stream a temporal synchronization 334 of the two renderings, that is to say a temporal alignment of the two renderings with respect to the same temporal reference (from so that the part of the text stream rendered at a time t according to this common frame of reference corresponds to the part of the audiovisual stream being reproduced at this time t, or over a time interval [t-t1;t+t2] encompassing this instant t. The rendered part of the text stream can thus be an at least partial transcription of the audiovisual stream being rendered or, alternatively, include a transcription of a part already rendered or not yet rendered of the audiovisual stream being rendered Such a variant can allow a user to benefit from a textual rendering relating to an intelligible part of the audiovisual stream that has already been consumed. For example, it can be a part immediately preceding or immediately subsequent to the part of the audiovisual stream being restored.

In a variant, the method may comprise a translation before rendering of at least part of the textual stream into a different language, implementing for example an automatic translation application accessible via a remote server).

Certain consumptions of audiovisual streams can implement several devices in communication each restoring at least partially the audiovisual stream. In this case, a text stream can be rendered according to the method of the present application on one or more of these devices implementing the method according to the method of the present application. In certain embodiments, the method may comprise, after detection of a degradation of the rendering of the audiovisual stream by the device 200, a transmission of part of the textual stream to another device also restoring at least partially the audiovisual stream. This part can correspond to the part of the text stream to be restored by the device 200. It can for example be transmitted by an SMS type message to the other device.

There illustrates another embodiment of the method 300. If the steps illustrated in may be similar to the steps described in connection with the , the obtaining 320 of the text stream can be implemented, unlike the embodiment illustrated in , conditionally, when the analysis 331 of the rendering context of the audiovisual stream has made it possible to detect a degradation of the rendering context. Similarly, in the embodiment of the , getting the text stream may break if an improvement in the rendering context is detected. Thus, the textual flow is obtained only when its rendering is necessary. Such an embodiment can therefore allow lower network occupancy than certain embodiments of the where the text stream is received from a remote device. Such an embodiment can also allow a simplification of the processing for parts of the audiovisual stream whose rendering context is not degraded (and therefore a gain in terms of processing time).

Obtaining the stream may in some embodiments include sending via a communication network, a command to transmit a textual stream associated with the audiovisual stream being played back and receiving the textual stream in response to this command. . The command can for example be sent to at least one device generating at least partially the audiovisual stream as explained above.

This application has been detailed in connection with a device suitable for rendering an audiovisual stream. Another aspect of the present application relates to a transmission method, implemented in a communication device, comprising during transmission of an audiovisual stream, transmission of a textual stream associated with the transmitted audiovisual stream. Various embodiments of this method can be implemented according to the present application, as presented above in particular in connection with the already detailed embodiments of the method implemented in the device for rendering an audiovisual stream. The transmission method can for example be implemented at the request of a recipient device of the transmitted audiovisual stream. It may in particular be an audiovisual stream transmitted by the communication device, for example during a synchronous communication between the communication device and the destination terminal (for example an audio or video call). The structure of the communication device may be similar to the structure of the device 200 described in connection with the .

The present application also relates to a computer program comprising instructions for the implementation of the various embodiments of the method above, when the program is executed by a processor. The present application also relates to a recording medium readable by a processor of an electronic device and on which is recorded a computer program comprising instructions for the implementation, when the program is executed by the processor, of the method herein. above in any of its embodiments.

Claims (10)

Method implemented in an electronic terminal comprising:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• a control of the rendering of said text stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream.

Method according to claim 1, in which said control of the rendering of said text stream comprises displaying and/or interrupting the display of at least part of said text stream on at least one screen coupled to said electronic terminal. A method according to claim 1, wherein said rendering control of said textual stream comprises rendering and/or aborting rendering of an audio stream obtained by transforming the textual stream by voice synthesis. Method according to one of Claims 1 to 3, comprising reception of said audiovisual and/or textual stream, from at least one remote electronic device, accessible via at least one communication network. Method according to claim 1 to 4, in which the obtaining of the textual stream comprises an at least partial transcription of at least one audio and/or video component of said audiovisual stream. A method according to claim 4 or 5, wherein the method comprises modifying said transcribed component. Method according to one of Claims 4 to 6, in which the said text stream is accessible from an audiovisual content server of the said communication network. Method according to one of Claims 4 to 6, in which the said text stream is accessible from another terminal of the said communication network. Electronic terminal comprising at least one processor suitable for:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• a control of the rendering of said text stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream

Computer program product comprising instructions for the implementation, when the program is executed by a processor of an electronic terminal, of a method comprising:

• obtaining an audiovisual stream;
• obtaining a text stream associated with said audiovisual stream;
• a control of the rendering of said text stream during the rendering of said audiovisual stream, according to a dynamic context of rendering of said audiovisual stream.