notes-ffmpeg-waveforms

notes-ffmpeg-waveforms

Installing ffmpeg on Linux Debian

apt-get install ffmpeg

# After this operation, 300 MB of additional disk space will be used.
# Do you want to continue? [Y/n]

Create red waves from audio file

ffmpeg -i ./testdata/test.wav \
	-filter_complex "showwavespic=s=898x120:colors=red" \
	-frames:v 1 ./testdata/test_red.png

Create green waves from audio file

ffmpeg -i ./testdata/test.wav \
	-filter_complex "showwavespic=s=898x120:colors=green" \
	-frames:v 1 ./testdata/test_green.png

This can be useful for some audio service (website or application) to get waveform image from audio file. For example for playback progress bar, soundcloud.com is the best example.

Useful links

• soundcloud.com
• Waveform – FFmpeg