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Is there a tool that can adjust the loudness level of a video?
for example I need to make the loudness to be -23 LUFS with max deviation of 0.5 lu.
is there a simple tool/cloud service that doesn't cost too much, that can do this ?
FFmpeg's loudnorm filter can be used. Basic syntax is
ffmpeg -i in.mp4 -c:v copy -af loudnorm=I=-23:LRA=1 -ar 48000 out.mp4
The loudness range (LRA) should be 2 x max deviation.
2 x max deviation
Also see the ebur128 filter for measuring loudness.
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