MP4 vs WebM
Kete Foy at
It makes a big difference to convert MP4 files to WebM. It takes a long time and a lot of CPU though.
$ ffmpeg -i Oliver\ Stones\ Untold\ History\ of\ the\ United\ States\ Prequel\ A.mp4 Oliver\ Stones\ Untold\ History\ of\ the\ United\ States\ Prequel\ A.webm
$ ls -sh Oliver\ Stones\ Untold\ History\ of\ the\ United\ States\ Prequel\ A.* 917M 'Oliver Stones Untold History of the United States Prequel A.mp4' 130M 'Oliver Stones Untold History of the United States Prequel A.webm' 
But those are just containers. What matters here is which video and audio codecs (and at what bitrates) is each of those files using.
JanKusanagi @identi.ca at 2016-06-04T14:20:36Z
Kete Foy likes this.
you should add
-vcodec copy -acodec copy
to this, if ypu want to save the encoding.
In your case ffmpeg transcoded source video and audio into some default encoders.
-vcodec copy -acodec copy
to this, if ypu want to save the encoding.
In your case ffmpeg transcoded source video and audio into some default encoders.
>> aleniuk:
“you should add
-vcodec copy -acodec copy
to this, if ypu want to save the encoding.
In your case ffmpeg transcoded source video and audio into some default encoders.”
Thanks, I was too lazy to leave those in there, but I think I can manage including those from now on.