BWF Peak Enveloper Chunk with FFmpeg
Posted: Mon Apr 20, 2015 3:52 pm
Since 2013, FFmpeg can create the "Peak Envelope Chunk" (levl) in Broadcast Wave Files (BWF).
To see if and which options your FFmpeg version supports, use the following command:
The NOA Audio Solutions archiving systems uses this envelope chunk without payload as standalone "Peakfiles" (.lpk).
They can be created as follows:
In order to create such a peakfile for a video, use the following command:
To see if and which options your FFmpeg version supports, use the following command:
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$ ffmpeg --help muxer=wav fullThey can be created as follows:
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$ ffmpeg -i audiofile.wav -f wav -write_peak only audiofile.wav.lpkCode: Select all
$ ffmpeg -i videofile.avi -vn -f wav -write_peak only videofile.avi.lpk