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Merge pull request #21561 from cudawarped:ffmpeg_prefer_tcp_default

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Default FFMPEG VideoCapture backend to rtsp_flags=prefer_tcp

* Make the VideoCapture ffmpeg backends default rtsp connection type prefer_tcp.

* Ensure that the ffmpeg version of avformat is checked.
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cudawarped 2022-02-10 16:45:34 +00:00 committed by GitHub
parent d5ecb5ff5a
commit 76aff84788
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1 changed files with 4 additions and 0 deletions
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4
modules/videoio/src/cap_ffmpeg_impl.hpp
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@ -980,7 +980,11 @@ bool CvCapture_FFMPEG::open(const char* _filename, const VideoCaptureParameters&
char* options = getenv("OPENCV_FFMPEG_CAPTURE_OPTIONS");
if(options == NULL)
{
#if LIBAVFORMAT_VERSION_MICRO >= 100 && LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(55, 48, 100)
av_dict_set(&dict, "rtsp_flags", "prefer_tcp", 0);
#else
av_dict_set(&dict, "rtsp_transport", "tcp", 0);
#endif
}
else
{