Hello, After discussion in user mailing list, several patchs, trying to fix various "issue" with showvolume filter
A wav example can be found here (1000 hz with -12 db, then -18 db then 0 db) : https://we.tl/X6L69kEWAN Command line to test (vertical) ./ffmpeg -i inputFile.wav -filter_complex "[0:a]showvolume=w=340:h=5:o=v:f=1.:p=1.:t=0:m=p:v=0[v]" -map "[v]" -c:v qtrle resAudioMeter004.mov Command line to test (horizontal) ./ffmpeg -i inputFile.wav -filter_complex "[0:a]showvolume=w=340:h=5:o=h:f=1.:p=1.:t=0:m=p:v=0[v]" -map "[v]" -c:v qtrle resAudioMeter004.mov 001 : add comments to help to remember the orientation value inside func 002 : calculate fade only if fade option is not set to 1. 003 : indent 004 : clear buffer at each frame (not sure it's the best way to fix) with this patch the wav sample at the start of this email, show a correct audio meter (the -18 db part of the wav, is correctly display) 005 : indent 006 : use another scale for display (some kind of log scale), more close to a classic audio meter display. IMHO, it's better, but if need, i will add and option, for choosing the scale display. 007 : Fix doc, for orientation parameter (possible value are h or v, not horizontal or vertical) I think the result of rms mode is still not right, but need more work. Comments welcome Martin
0001-avfilter-showvolume-add-comment-for-orientation-cond.patch
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0002-avfilter-showvolume-calculate-fade-only-if-fade-1.patch
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0003-avfilter-showvolume-indent-after-prev-commit.patch
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0004-avfilter-showvolume-clear-buffer-at-each-frame.patch
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0005-avfilter-showvolume-indent-after-prev-commit.patch
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0006-avfilter-showvolume-use-some-kind-of-log-scale-for-d.patch
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0007-doc-avfilter-showvolume-fix-doc-for-orientation-para.patch
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