[FFmpeg-user] Audio filter: removesilence doesn't appear to do anything
mtcjayne at gmail.com
Mon Sep 25 09:37:55 EEST 2017
Here is silencedetect as well.
This 20 minute sample has over 18 minutes of silence according to
silencedetect. However silenceremove removes absolutely nothing.
input.m4a was 20:00.03 and output.m4a was 20:00.07.
On Mon, Sep 25, 2017 at 1:19 AM, DopeLabs <dopelabs at dubstep.fm> wrote:
> please provide the complete un-truncated console output
>> On Sep 24, 2017, at 10:59 13PM, Quinn Wood <mtcjayne at gmail.com> wrote:
>> I have used the following command
>> ffmpeg -i input.m4a -af silenceremove=0:0:0:-1:0.5:-20dB output.m4a
>> on a file. When I use another tool (Audacity) to truncate periods over
>> 0.5 seconds of under -20dB volume it removes upwards of an hour from
>> the input file. When I run this command ffmpeg doesn't remove a single
>> second. I have tried numerous variations of the command and numerous
>> input files, and am simply unable to replicate the effect Audacity is
>> The input files have a period of silence at the beginning that is
>> predictable, intermittent periods of silence throughout the file of
>> unknown quantity and length, and a period of silence at the end that
>> is predictable.
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