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  • Websites made ​​with MediaSPIP

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  • Amélioration de la version de base

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  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
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  • embed video stream with custom meta data

    15 mai 2022, par Sergey Kolesnik

    I have an optical system that provides a UDP video stream.

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    From device specification FAQ :

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    Both single metadata (KLV) stream and compressed video (H.264) with metadata (KLV) are available on Ethernet link. Compressed video and metadata are coupled in the same stream compliant with STANAG 4609 standard. Each encoded video stream is encapsulated with the associated metadata within an MPEG-TS single program stream over Ethernet UDP/IP/ The video and metadata are synchronized through the use of timestamps.

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    Also there are other devices that provide data about the state of an aircraft (velocity, coords, etc). This data should be displayed on a client GUI display alongside with video. Of course it has to be synchronized with the current video frame.

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    One of the approaches I though of is to embed this data into the video stream. But I am not sure if it is possible or should I use another (than UDP) protocol for this purpose.

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    Is it possible/reasonable to use such approach ? Is ffmpeg library suitable in this case ?&#xA;If not, what are the other ways to synchronize data with a video frame.&#xA;Latency is crucial. Although bandwidth is limited to 2-5 Mbps.

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    It seems to be possible using ffmpeg : AVPacket can be provided with additional data using function av_packet_add_side_data which takes a preallocated buffer, size and a type AVPacketSideDataType.&#xA;However, I am not sure for now, which enum value of AVPacketSideDataType can be used for custom user-provided binary data.

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    Something similar that might be used for my needs :

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    How do I encode KLV packets to an H.264 video using libav*

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