I am wondering, in code, what's the most reliable way to probe a file to
see if ffmpeg will open it. I can open a context and see the return
value. However, this returns true for image formats like jpeg, png, and
others and I find those handled better with other libraries. Is there a
way to have ffmpeg test to open only video codecs with no image codecs.
Currently the hack I have is:
bool aviImage::test_filename( const char* buf )
{
AVFormatContext* ctx = NULL;
int error = avformat_open_input( &ctx, buf, NULL, NULL );
if ( ctx )
avformat_close_input( &ctx );
if ( error <= 0 ) return false;
return true;
}
The error <= 0 line is intentional instead of just error < 0. This hack
seems to avoid jpeg and others detection.
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