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• Merge remote-tracking branch ’cus/stable’

  6 novembre 2013, par Michael Niedermayer

  Merge remote-tracking branch ’cus/stable’
  * cus/stable :
  
    ffplay : add smarter method for determining video picture duration
  
    ffplay : add frame duration estimated from frame rate to VideoPicture
  
    ffplay : avoid code duplication in AVFILTER enabled and disabled case
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] ffplay.c

• AccessViolationException in ffmpeg (called from .NET with FFmpeg.AutoGen)

  13 septembre 2022, par zgabi

  I'm trying to "download"/stream an RTSP stream with FFmpeg.Autogen. I receive an AccessViolationException before the actual stream begins.

  


  I tried multiple FFmpeg and FFmpeg.AutoGen version (for example the latest stable FFMpeg version 5.1.1 from gyan.dev site and the latest FFmpeg.Autogen : 5.1.1). I also tried version 4.x (of course both ffmpeg and FFmpeg.AutoGen)

  


  This code works with a lot of Hikvision camera streams, I get the Access Violation with an expensive InfiRay thermal camera. (But anyway if it sends some corrupt data, ffmpeg should not crash.)

  


  My code is (this is only the initialization, since the problem occures there) :

  


  av_log_set_level(AV_LOG_DEBUG);

AVFormatContext* cf = null;

try
{
    cf = avformat_alloc_context();
    if (cf == null)
    {
        throw new Exception("Could not allocate the format context");
    }

    int probeSize = 32768 * 2;
    cf->probesize = probeSize;

    AVDictionary* options = null;
    string probeSizeStr = probeSize.ToString();
    av_dict_set(&options, "analyzeduration", probeSizeStr, 0);
    av_dict_set(&options, "probesize", probeSizeStr, 0);
    av_dict_set(&options, "rtsp_transport", "tcp", 0);

    string url =
        "rtsp://horizontetest:horizontetest@122.5.39.146:7828/cam/realmonitor?channel=1&subtype=1&unicast=true&proto=Onvif";
    int ret = avformat_open_input(&cf, url, null, &options);
    if (ret != 0)
    {
        throw new Exception("Could not open the input");
    }

    ret = avformat_find_stream_info(cf, &options);
    Console.WriteLine(probeSizeStr);
    if (ret < 0)
    {
        throw new Exception("Could not find stream info");
    }

    if (cf->streams == null)
    {
        throw new Exception("Could not find stream");
    }
}
finally
{
    if (cf != null)
    {
        avformat_close_input(&cf);
    }
}


  


  Access Violation occures in the avformat_find_stream_info call.

  


• fate : add simple test for async

  29 mai 2014, par Michael Niedermayer

  fate : add simple test for async
  This only checks that things havnt changed, the values provide little
  
  help in determining if a change is good or bad.
  Improvements welcome !
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] tests/fate/libswresample.mak