cheatsheets/ffmpeg.org

Convert mp4 to ogg

ffmpeg -i input.mp4 -acodec libvorbis -vcodec libtheora -f ogv output.ogv

converting all mp4's in a directory to ogg

systemctl | grep -m 1 ifplugd | awk '{print $1}' | xargs systemctl status {}

for file in *.mp4
do
  echo "$file" "${file/.mp4/.ogg}"
  ffmpeg -i "$file" -acodec libvorbis -vcodec libtheora -f ogv "${file/.mp4/.ogg}"
done