On May 7, 2014, at 3:29 PM, Clément Bœsch <[email protected]> wrote: > 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
Exactly what I was looking for. Thank you Clement! > -- > Clément B. > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user
_______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
