I have an flv video encoded with ffmpeg and H.264.
I want to cut it with precision, so I need to re-encode it.
To save encoding time, cut and re-encode from the desired millisecond to the nearest key frame, and cut without re-encode from that key frame to finish.
I get two flv files. Then I concatenate both files and the trick is done.
But I have a problem. Apart, files seems to be correct, but after concatenation appears a sound glitch at the union.
My concat command:
ffmpeg -f concat -i list.txt -acodec copy -vcodec copy -f flv output.flv -y
How can I avoid this sound glitch?