[MPlayer-users] Detect Sound in File
rashkae at tigershaunt.com
Sat Sep 11 03:14:31 CEST 2010
Paul Huwe wrote:
> Is it possible to detect when audio is being produced (above a certain threshold, say) in mplayer?
> For example, is it possible to detect when someone is speaking in a commentary track mp3, then do something based on that (say, tell a different mplayer process playing the dvd to lower its volume).
Probably not something easy to do without allot of programming.. but
assuming the goal is to play a movie with a rifftrack, I would do it thusly:
rip the movie with your favourite movie rip application (handbrake?)
convert audio to vorbis. Extract the audio from the ripped file, use
audacity to combine the movie audio with the riff track, and also using
audacity select those areas of the original sound track where you can
see active waveform on the riff and lower the volume. Merge the two
sound tracks and export to vorbis. Mux it back into the ripped movie
with mkvmerge. Now you'll have one audio track that includes both the
movie audio and the commentary track.
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