On Wed, May 07, 2014 at 11:44:26AM -0700, Ricky Huang wrote: > Hello all, > > I am experimenting to the showspectrum filter. According to the example at > http://www.ffmpeg.org/ffmpeg-filters.html#Examples-11: > > > ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1]; [a] > > showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt [out0]' > > but I cannot figure out how to output the showspectrum result to a saved > video with ffmpeg command. When I adopt the ffplay command to ffmpeg: > > > ./ffmpeg -i Q-full-circle.mp3 -vf > > showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt -y > > full-circle.avi > > > the command executes without error, the video file gets generated, but no > video is produced. >
./ffmpeg -f lavfi -i amovie=Q-full-circle.mp3,showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt -y full-circle.avi or ./ffmpeg -i Q-full-circle.mp3 -filter_complex showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt -y full-circle.avi -- Clément B.
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