I thought I'd extracted the video by simply using the m4a extension- that's not the way that works and I should have noticed that. I bet the audio has been truncated but the video remains the full length. Let me strip out the video and try it.
On Mon, Sep 25, 2017 at 12:59 AM, Quinn Wood <[email protected]> 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 > producing. > > 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. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
