PeaceNowProton

This was a mono film but only has the left channel audio. You can fix with this command (change input.mp4 to your filename): ffmpeg -i "input.mp4" -map 0:v -map 0:a -af "pan=stereo|c0=c0|c1=c0" -c:v copy -c:a aac output.mp4

Great movie, thanks!

More polio cases are caused by the vaccine than the wild virus.

Get the audio from the movie on u tube and replace it with ffmpeg - ffmpeg -i gruesometwosome.mp4 -i audio.mp3 -c copy -map 0:v:0 -map 1:a:0 output.mp4