On 9/25/17, Quinn Wood <[email protected]> wrote: > I have removed the video and am getting the same results. > silenceremove is not removing silence. > > ffmpeg -i ../2017-09-24T123913.mp4.done -vn -af > silenceremove=0:0:0:-1:0.5:-20dB:1 output.m4a > > https://pastebin.com/raw/xcGQFs30 >
Are you sure? Output file duration is smaller than input one. > ffprobe -i output.m4a > > https://pastebin.com/raw/183KLwZY > > ffmpeg -i output.m4a -af silencedetect=n=-20dB:d=0.5 -f null - > > https://pastebin.com/raw/4304SzMh > > Using peak detection makes no difference: > https://pastebin.com/raw/KwqXudSw https://pastebin.com/raw/462yRwQ7 > https://pastebin.com/raw/s362n0wd > > On Mon, Sep 25, 2017 at 1:45 AM, Quinn Wood <[email protected]> wrote: >> 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". _______________________________________________ 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".
