[FFmpeg-user] force/replace colors of waveform (showwaves)? (and 60fps at 720p)?
george at nsup.org
Sun Apr 20 13:57:26 CEST 2014
Le primidi 1er floréal, an CCXXII, DopeLabs a écrit :
> also... when -r 60 is specified before -filter_complex, the output is 60
> fps, but showwaves still only outputs at 34fps (@720p)(even if r=60 is
> specified in the filter_complex), but if i change to showwaves=s=720x405,
> showwaves outputs a proper 60fps...
> not sure at what point showwaves decides to not try for 60fps anymore, but
> id like to avoid generating a smaller sized true 60fps file, and then
> scaling the rest of the way to reach my target of 720p... any ideas?
Your input has 44100 samples per second, showwaves plots 1280 samples per
frame, that makes 44100/1280. = 34.453125 frames per second.
With the 720 resolution, you get 61.25, not 60.
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