ffmpeg Tools

ffmpeg.sh

# https://ffmpeg.org/ffmpeg-filters.html#showwaves

# loop 20 times
ffmpeg -stream_loop 20 -i loop.mp4 -c copy output.mp4

# Oscilloscope
ffmpeg -i audio.wav -filter_complex "[0:a]showwaves=s=800x80:mode=p2p:rate=60:draw=full:colors=white,format=rgba[v]" -map "[v]" -map 0:a video.mkv

# Oscilloscope with transparent background
ffmpeg -i audio.wav -filter_complex "[0:a]showwaves=s=800x80:mode=p2p:rate=60:draw=full:colors=white,format=rgba[v]" -map "[v]" -map 0:a -c:v png video.mp4

# Volume Peek Meter
ffmpeg -i audio.wav -filter_complex "[0:a]showvolume=rate=60:t=0:v=0:s=1:f=0.4,format=rgba[v]" -map "[v]" -map 0:a video.mkv

# Colorbar Spectograph
ffmpeg -i audio.wav -filter_complex "[0:a]showcqt=s=800x80:rate=60:axis=0:bar_h=0:sono_h=0,format=rgba[v]" -map "[v]" -map 0:a video.mkv

# Frequency Graph
ffmpeg -i audio.wav -filter_complex "[0:a]showfreqs=s=800x80:colors=white,format=rgba[v]" -map "[v]" -map 0:a video.mkv
 
# Scrolling Spectograph
ffmpeg -i audio.wav -filter_complex "[0:a]showspectrum=s=800x80:slide=scroll:color=nebulae:fps=60,format=rgba[v]" -map "[v]" -map 0:a video.mkv

# convert images to webp
find . -name "*.png" -o -name "*.jpg" -exec bash -c 'cwebp "$1" -o "${1%.png}".webp' - {} \;

# convert flac to mp3 in parallel
parallel "ffmpeg -i {1} -ab 256k {1.}.mp3" ::: **/*.flac;