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allow forcing the input format for ffmpeg backend with env var

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This commit is contained in:
Douwe Gelling 2019-07-19 20:33:22 +02:00
parent cf93a05d2d
commit 96a27f4266
1 changed files with 8 additions and 1 deletions
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9
modules/videoio/src/cap_ffmpeg_impl.hpp
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@ -891,7 +891,14 @@ bool CvCapture_FFMPEG::open( const char* _filename )
#else
av_dict_set(&dict, "rtsp_transport", "tcp", 0);
#endif
int err = avformat_open_input(&ic, _filename, NULL, &dict);
AVInputFormat* input_format = NULL;
AVDictionaryEntry* entry = av_dict_get(dict, "input_format", NULL, 0);
if (entry != 0)
{
input_format = av_find_input_format(entry->value);
}
int err = avformat_open_input(&ic, _filename, input_format, &dict);
#else
int err = av_open_input_file(&ic, _filename, NULL, 0, NULL);
#endif