
This was introduced in FFmpeg lavf 55.1.100 in 2013. For systems that are still on LibAV or older FFmpeg there is a fallback implementation that performs the same guess as we did before in `av_get_r_frame_rate_compat()`.
This was introduced in FFmpeg lavf 55.1.100 in 2013. For systems that are still on LibAV or older FFmpeg there is a fallback implementation that performs the same guess as we did before in `av_get_r_frame_rate_compat()`.