Hello, and thanks so much for your reply. I was actually only requesting help for the silenceremove arguments (or settings or however they're called) on the commandline.
The -20 dB threshold will not be my final settings. It was just to make sure something is removed. I don't know if you only read my additions to the original question (be replying to my first original email) or did read my original mail. I tried a few variations of the silenceremove filter arguments but with unexpected results. Kind regards, Tony ________________________________ Van: ffmpeg-user <[email protected]> namens Ted Park <[email protected]> Verzonden: woensdag 19 februari 2020 10:11 Aan: FFmpeg user questions <[email protected]> Onderwerp: Re: [FFmpeg-user] silenceremove use > Is there anyone who has experience with the silenceremove filter? I'm trying > to remove long silences from recordings i made on my phone. The silences are > actually a constant noise because of the microphone gain is set to 5.0x. (The > playback meter in Audacity says the noise is around -48 to 42 dB). It is > around 9 hours in duration. 1,1 GB large, signed 16 bit little endian mono 16 > kHz wave file. Audacity says it's 32 bit float wave file though. Hey there, As you’ve noticed you pretty much need to know the basic “profile,” I guess, of the silence in your audio for best results. You could use the show volume filter with ffplay, % ffplay -f lavfi -i “amovie=$INPUT,showvolume" To get a general idea of what the noise is like, and apply the options accordingly. e.g. Use the levels of the silence/noise sections for the level options, setting -20db would cut out a lot more than noise, I think; see if there are short periods of noise, other than background noise, but still noise, and see how long those are to set a value for the duration options; also see if using peak and a window of 10 seconds makes sense (It might not, even if you set a more sensible value for the threshold, basically I think that would make it treat anything as silence if in a 10 second window it rises above the threshold even once) _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
