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  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • 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.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (8584)

  • can write frames to rtsp server, but can't display them in the ffplay or live555 client

    11 octobre 2016, par tankyx

    I am working on a zero latency streaming server, using ffmpeg libraries and I am facing a problem.
    My server is working when using nvenc, I can streaming successfully to my client, which is another computer on LAN. But if I change my encoder to use the libx264 (in order to reduce the latency), the server still write the frames, but the client is facing problems with the sdp header, and more specifically, the media subsession does not seem to be initialized. Therefore, the client crashes.

    The thing is, when I dump the sdp header when using nvenc and libx264, it is actually the same in both case.

    Here is the code I have done to initialize my encoder :

    /*
    
    Init the codec that is used to encode the video.
    
    Init the output format context (aka RTSP uri).
    
*/
    
FfmpegEncoder::FfmpegEncoder(char *url)
    
{
    
    AVRational      tmp_time_base;
    
    AVDictionary*   options = NULL;
    

    
    this->pCodec = avcodec_find_encoder_by_name("libx264");
    
    if (this->pCodec == NULL)
    
        throw myExceptions("Error: Can't initialize the encoder. FfmpegEncoder.cpp l:9\n");
    

    
    this->pCodecCtx = avcodec_alloc_context3(this->pCodec);
    

    
    //Alloc output context
    
    if (avformat_alloc_output_context2(&outFormatCtx, NULL, "rtsp", url) < 0)
    
        throw myExceptions("Error: Can't alloc stream output. FfmpegEncoder.cpp l:17\n");
    

    
    this->st = avformat_new_stream(this->outFormatCtx, this->pCodec);
    
    this->st->id = this->outFormatCtx->nb_streams - 1;
    

    
    if (this->st == NULL)
    
        throw myExceptions("Error: Can't create stream . FfmpegEncoder.cpp l:22\n");
    

    
    //Define the framerate of the output. The numerator should stay 1. Denumerator is the framerate we are aiming for.
    

    
    tmp_time_base.num = 1;
    
    tmp_time_base.den = 60;
    

    
    //TODO : parse these values
    
    this->pCodecCtx->bit_rate = 5000000;
    
    this->pCodecCtx->width = 1280;
    
    this->pCodecCtx->height = 720;
    
    //This set the fps. 60fps at this point.
    
    this->pCodecCtx->time_base = tmp_time_base;
    
    this->st->time_base = tmp_time_base;
    
    //Add a intra frame every 12 frames
    
    this->pCodecCtx->gop_size = 10;
    
    this->pCodecCtx->pix_fmt = AV_PIX_FMT_YUV420P;
    

    
    av_opt_set(this->pCodecCtx, "tune", "zerolatency", 0);
    
    av_opt_set(this->pCodecCtx, "vprofile", "main", 0);
    
    av_opt_set(this->pCodecCtx, "preset", "faster", 0);
    

    
    //Open Codec, using the context + x264 options
    
    if (avcodec_open2(this->pCodecCtx, this->pCodec, &options) < 0)
    
        throw myExceptions("Error: Can't open the codec. FfmpegEncoder.cpp l:43\n");
    

    
    if (avcodec_copy_context(this->st->codec, this->pCodecCtx) != 0) {
    
        throw myExceptions("Error : Can't copy codec context. FfmpegEncoder.cpp : l.46");
    
    }
    
    av_dump_format(this->outFormatCtx, 0, url, 1);
    

    
    //write the header needed to start the stream.
    
    if (avformat_write_header(this->outFormatCtx, NULL) != 0)
    
        throw myExceptions("Error: failed to connect to RTSP server. FfmpegEncoder.cpp l:48\n");
    
}

  • can write frames to rtsp server, but can't display them in the ffplay or live555 client

    11 octobre 2016, par tankyx

    I am working on a zero latency streaming server, using ffmpeg libraries and I am facing a problem.
    My server is working when using nvenc, I can streaming successfully to my client, which is another computer on LAN. But if I change my encoder to use the libx264 (in order to reduce the latency), the server still write the frames, but the client is facing problems with the sdp header, and more specifically, the media subsession does not seem to be initialized. Therefore, the client crashes.

    The thing is, when I dump the sdp header when using nvenc and libx264, it is actually the same in both case.

    Here is the code I have done to initialize my encoder :

    /*
    
    Init the codec that is used to encode the video.
    
    Init the output format context (aka RTSP uri).
    
*/
    
FfmpegEncoder::FfmpegEncoder(char *url)
    
{
    
    AVRational      tmp_time_base;
    
    AVDictionary*   options = NULL;
    

    
    this->pCodec = avcodec_find_encoder_by_name("libx264");
    
    if (this->pCodec == NULL)
    
        throw myExceptions("Error: Can't initialize the encoder. FfmpegEncoder.cpp l:9\n");
    

    
    this->pCodecCtx = avcodec_alloc_context3(this->pCodec);
    

    
    //Alloc output context
    
    if (avformat_alloc_output_context2(&outFormatCtx, NULL, "rtsp", url) < 0)
    
        throw myExceptions("Error: Can't alloc stream output. FfmpegEncoder.cpp l:17\n");
    

    
    this->st = avformat_new_stream(this->outFormatCtx, this->pCodec);
    
    this->st->id = this->outFormatCtx->nb_streams - 1;
    

    
    if (this->st == NULL)
    
        throw myExceptions("Error: Can't create stream . FfmpegEncoder.cpp l:22\n");
    

    
    //Define the framerate of the output. The numerator should stay 1. Denumerator is the framerate we are aiming for.
    

    
    tmp_time_base.num = 1;
    
    tmp_time_base.den = 60;
    

    
    //TODO : parse these values
    
    this->pCodecCtx->bit_rate = 5000000;
    
    this->pCodecCtx->width = 1280;
    
    this->pCodecCtx->height = 720;
    
    //This set the fps. 60fps at this point.
    
    this->pCodecCtx->time_base = tmp_time_base;
    
    this->st->time_base = tmp_time_base;
    
    //Add a intra frame every 12 frames
    
    this->pCodecCtx->gop_size = 10;
    
    this->pCodecCtx->pix_fmt = AV_PIX_FMT_YUV420P;
    

    
    av_opt_set(this->pCodecCtx, "tune", "zerolatency", 0);
    
    av_opt_set(this->pCodecCtx, "vprofile", "main", 0);
    
    av_opt_set(this->pCodecCtx, "preset", "faster", 0);
    

    
    //Open Codec, using the context + x264 options
    
    if (avcodec_open2(this->pCodecCtx, this->pCodec, &options) < 0)
    
        throw myExceptions("Error: Can't open the codec. FfmpegEncoder.cpp l:43\n");
    

    
    if (avcodec_copy_context(this->st->codec, this->pCodecCtx) != 0) {
    
        throw myExceptions("Error : Can't copy codec context. FfmpegEncoder.cpp : l.46");
    
    }
    
    av_dump_format(this->outFormatCtx, 0, url, 1);
    

    
    //write the header needed to start the stream.
    
    if (avformat_write_header(this->outFormatCtx, NULL) != 0)
    
        throw myExceptions("Error: failed to connect to RTSP server. FfmpegEncoder.cpp l:48\n");
    
}

  • can write frames to rtsp server, but can't display them in the ffplay or live555 client

    11 octobre 2016, par tankyx

    I am working on a zero latency streaming server, using ffmpeg libraries and I am facing a problem.
    My server is working when using nvenc, I can streaming successfully to my client, which is another computer on LAN. But if I change my encoder to use the libx264 (in order to reduce the latency), the server still write the frames, but the client is facing problems with the sdp header, and more specifically, the media subsession does not seem to be initialized. Therefore, the client crashes.

    The thing is, when I dump the sdp header when using nvenc and libx264, it is actually the same in both case.

    Here is the code I have done to initialize my encoder :

    /*
    
    Init the codec that is used to encode the video.
    
    Init the output format context (aka RTSP uri).
    
*/
    
FfmpegEncoder::FfmpegEncoder(char *url)
    
{
    
    AVRational      tmp_time_base;
    
    AVDictionary*   options = NULL;
    

    
    this->pCodec = avcodec_find_encoder_by_name("libx264");
    
    if (this->pCodec == NULL)
    
        throw myExceptions("Error: Can't initialize the encoder. FfmpegEncoder.cpp l:9\n");
    

    
    this->pCodecCtx = avcodec_alloc_context3(this->pCodec);
    

    
    //Alloc output context
    
    if (avformat_alloc_output_context2(&outFormatCtx, NULL, "rtsp", url) < 0)
    
        throw myExceptions("Error: Can't alloc stream output. FfmpegEncoder.cpp l:17\n");
    

    
    this->st = avformat_new_stream(this->outFormatCtx, this->pCodec);
    
    this->st->id = this->outFormatCtx->nb_streams - 1;
    

    
    if (this->st == NULL)
    
        throw myExceptions("Error: Can't create stream . FfmpegEncoder.cpp l:22\n");
    

    
    //Define the framerate of the output. The numerator should stay 1. Denumerator is the framerate we are aiming for.
    

    
    tmp_time_base.num = 1;
    
    tmp_time_base.den = 60;
    

    
    //TODO : parse these values
    
    this->pCodecCtx->bit_rate = 5000000;
    
    this->pCodecCtx->width = 1280;
    
    this->pCodecCtx->height = 720;
    
    //This set the fps. 60fps at this point.
    
    this->pCodecCtx->time_base = tmp_time_base;
    
    this->st->time_base = tmp_time_base;
    
    //Add a intra frame every 12 frames
    
    this->pCodecCtx->gop_size = 10;
    
    this->pCodecCtx->pix_fmt = AV_PIX_FMT_YUV420P;
    

    
    av_opt_set(this->pCodecCtx, "tune", "zerolatency", 0);
    
    av_opt_set(this->pCodecCtx, "vprofile", "main", 0);
    
    av_opt_set(this->pCodecCtx, "preset", "faster", 0);
    

    
    //Open Codec, using the context + x264 options
    
    if (avcodec_open2(this->pCodecCtx, this->pCodec, &options) < 0)
    
        throw myExceptions("Error: Can't open the codec. FfmpegEncoder.cpp l:43\n");
    

    
    if (avcodec_copy_context(this->st->codec, this->pCodecCtx) != 0) {
    
        throw myExceptions("Error : Can't copy codec context. FfmpegEncoder.cpp : l.46");
    
    }
    
    av_dump_format(this->outFormatCtx, 0, url, 1);
    

    
    //write the header needed to start the stream.
    
    if (avformat_write_header(this->outFormatCtx, NULL) != 0)
    
        throw myExceptions("Error: failed to connect to RTSP server. FfmpegEncoder.cpp l:48\n");
    
}

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