====== ffmpeg ======


===== Common tasks =====


==== Record system audio =====

<code bash save_audio.sh>
# Record system audio
ffmpeg -f pulse -i default output.wav
</code>

==== Extract audio from video ====

<code bash extract_audio_from_video.sh>
# Extract audio only from a video
ffmpeg -i x.m4v -vn x.ogg
</code>

==== Convert video to OGG ====

<code bash convert_vid_to_ogg.sh>
# Convert video to OGG
ffmpeg -i x.m4v x.ogg
</code>


==== Flip video vertically ====

<code bash flip_video_vertically.sh>
# Flip video vertically
ffmpeg -i in.avi -vf vflip -c:a copy out
</code>