Advanced search

Medias (0)

Tag: - Tags -/alertes

No media matches your criterion on the site.

Other articles (36)

  • Des sites réalisés avec MediaSPIP

    2 May 2011, by

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Support audio et vidéo HTML5

    10 April 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 April 2011, by

    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 (...)

On other websites (3508)

  • Transcoding HD RTP/UDP stream with FFMPEG

    19 June 2017, by SudoSu

    I’ve a Tera STI440 streamer with two inputs used (for TV channel streaming). When I watch the source stream it seems allright, but when I start FFMPEG transcoding, the image is going to collapse on random times (probably around every 5-15 sec). The transcoding is okay with SD 480P streams.

    FFPROBE one of my HD stream:
    `

    Input #0, rtp, from 'rtp://239.192.24.3:1234/':
    
  Duration: N/A, start: 18002.926656, bitrate: N/A
    
  Program 202 
    
    Metadata:
    
      service_name    : M5 HD
    
      service_provider: Magyar Televizio
    
    Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0:0(hun): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 enter code herekb/s

    FFPROBE one of my SD stream (Which is working properly):

    Input #0, rtp, from 'rtp://239.192.24.4:1234/':
    
  Duration: N/A, start: 51003.435044, bitrate: N/A
    
  Program 203 
    
    Metadata:
    
      service_name    : RTL Klub
    
      service_provider: Magyar RTL Telev�zi� Zrt.
    
    Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt470bg, top first), 720x576 [SAR 12:11 DAR 15:11], 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0:1(hun): Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

    I want to do a HLS stream so I ran this script for FFMPEG:

    /usr/bin/ffmpeg -loglevel 16 -i rtp://239.192.24.3:1234/ -s pal -c:v libx264 -c:a libmp3lame -b:v 1000k -b:a 96k -ar 44100 -vf 'yadif=0:-1:1' -preset:v superfast -f hls -hls_time 7 -hls_list_size 10 -hls_wrap 10 -hls_base_url http://10.3.1.3:8080/ts/ -hls_segment_filename /tvman/hls_out/ts/M5_hq_%03d /tvman/hls_out/subplaylist/M5-hq.m3u8

    I access the playlist file from NGINX but also tried Apache too.
    Here’s some log from FFMPEG process (loglevel 16)

    I made some diagnostics:

    • Looked for network traffic (it’s around 60 mbps, so it should be okay with a 100mbps ethernet
    • CPU & RAM load allright
    • I reduced the network traffic by turning off TV channel streams on streamer. It was around 6-7 mbps.

    If you need any more information, I’ll provide it for you.
    Thanks for the help!

    P.S.: I’m not native English speaker, so sorry for mistakes. :)

  • libav: How to clear real-time buffer?

    29 November 2018, by user67

    Here’s the c++ code that I’m using to access my webcam.

    int Camera::Init(char* file_name,
    
                char* device_name,
    
                char* format,
    
                char* resolution,
    
                char* frame_rate,
    
                char* pixel_format)
    
{
    
    av_log(NULL, AV_LOG_INFO, "---INIT STARTED\n");
    
    avdevice_register_all();
    
    av_register_all();
    

    
    AVDictionary* properties_collection = NULL;
    
    av_dict_set(&properties_collection, "f", format, NULL);
    
    av_dict_set(&properties_collection, "video_size", resolution, NULL);
    
    av_dict_set(&properties_collection, "framerate", frame_rate, NULL);
    
    av_dict_set(&properties_collection, "pix_fmt", pixel_format, NULL);
    
    AVInputFormat *input_format = av_find_input_format("dshow");
    
    char command_line[256];
    
    sprintf(command_line, "video=%s", device_name);
    
    AVFormatContext *input_context = avformat_alloc_context();
    
    //input_context->flags |= AVFMT_FLAG_NOBUFFER;      //DOESN'T HELP
    
    //input_context->max_picture_buffer = 0;            //ERR
    

    
    int err_code = 0;
    
    err_code = avformat_open_input(&input_context,
    
                                    command_line,
    
                                    input_format,
    
                                    &properties_collection);
    
    int i = 0;
    
    while (i++ < 30)
    
    {
    
        Sleep(1000);
    
        //avformat_flush(input_context); //DOESN'T HELP
    
        //av_free(input_context); //ERR
    
    }
    
    system("pause");
    
    return 0;
    
}

    Right after "avformat_open_input()" it starts reading frames to some internal buffer without me even calling "av_read_frame()".
    After about 10 seconds it start’s giving me error messages:

    [dshow @ 0014ed40] real-time buffer [VirtualBox Webcam - FULL HD 1080P Webcam] [video input] 
    
too full or near too full (62% of size: 3041280 [rtbufsize parameter])! 
    
frame dropped!
    
...
    
...
    
...
    
[dshow @ 0014ed40] real-time buffer [VirtualBox Webcam - FULL HD 1080P Webcam] [video input] 
    
too full or near too full (100% of size: 3041280 [rtbufsize parameter])! 
    
frame dropped!

    How to clear this buffer or avoid using it?

    Thanks in advance.

    P.S.Please pardon my english.

    P.P.S.Have a good day.

  • FFMPEG API: How to clear real-time buffer?

    29 November 2018, by user67

    Here’s the c++ code that I’m using to access my webcam.

    int Camera::Init(char* file_name,
    
                char* device_name,
    
                char* format,
    
                char* resolution,
    
                char* frame_rate,
    
                char* pixel_format)
    
{
    
    av_log(NULL, AV_LOG_INFO, "---INIT STARTED\n");
    
    avdevice_register_all();
    
    av_register_all();
    

    
    AVDictionary* properties_collection = NULL;
    
    av_dict_set(&properties_collection, "f", format, NULL);
    
    av_dict_set(&properties_collection, "video_size", resolution, NULL);
    
    av_dict_set(&properties_collection, "framerate", frame_rate, NULL);
    
    av_dict_set(&properties_collection, "pix_fmt", pixel_format, NULL);
    
    AVInputFormat *input_format = av_find_input_format("dshow");
    
    char command_line[256];
    
    sprintf(command_line, "video=%s", device_name);
    
    AVFormatContext *input_context = avformat_alloc_context();
    
    //input_context->flags |= AVFMT_FLAG_NOBUFFER;      //DOESN'T HELP
    
    //input_context->max_picture_buffer = 0;            //ERR
    

    
    int err_code = 0;
    
    err_code = avformat_open_input(&input_context,
    
                                    command_line,
    
                                    input_format,
    
                                    &properties_collection);
    
    int i = 0;
    
    while (i++ < 30)
    
    {
    
        Sleep(1000);
    
        //avformat_flush(input_context); //DOESN'T HELP
    
        //av_free(input_context); //ERR
    
    }
    
    system("pause");
    
    return 0;
    
}

    Right after "avformat_open_input()" it starts reading frames to some internal buffer without me even calling "av_read_frame()".
    After about 10 seconds it start’s giving me error messages:

    [dshow @ 0014ed40] real-time buffer [VirtualBox Webcam - FULL HD 1080P Webcam] [video input] 
    
too full or near too full (62% of size: 3041280 [rtbufsize parameter])! 
    
frame dropped!
    
...
    
...
    
...
    
[dshow @ 0014ed40] real-time buffer [VirtualBox Webcam - FULL HD 1080P Webcam] [video input] 
    
too full or near too full (100% of size: 3041280 [rtbufsize parameter])! 
    
frame dropped!

    How to clear this buffer or avoid using it?

    Thanks in advance.

    P.S.Please pardon my english.

    P.P.S.Have a good day.

Browsing