I am using the concat demuxer in ffmpeg. I use the following command:
ffmpeg -f concat -i concat.txt -c copy out.mkv
and it works, except that it adds short gaps of black frames in between the concatenated files (there are three of them). How do I make it stop? If it helps, the audio is cut at those points, too.
I know that a parameter for this exists, but I can't find the original question anywhere.
Thanks in advance.