Opened 3 months ago

#7749 new defect

removes silence but unwanted speed up or pitch up the output.wav

Reported by: pitchsilence Owned by:
Priority: normal Component: ffmpeg
Version: git-master Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:
How to reproduce:

% ./ffmpeg_20190219 -i input.wav -af silenceremove=start_periods=1:stop_periods=-1:start_threshold=-50dB:stop_threshold=-20dB:start_duration=0.0:stop_duration=0.0:start_silence=0.15:stop_silence=0.0 -ac 1 -acodec pcm_s16le -ar 16000 output.wav
ffmpeg version static build 20190219 
built on Ubuntu 18.04/ Linux Mint 19

This removes the silence as expected but add pitch up or speed up (can not say) to the output.wav.
It seemed only to happen, when start_threshold is smaller than stop_threshold (-50dB < -20dB). Maybe it also happens on specific combinations of this two values.
(I didn't tested all possibilities)

Change History (0)

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