Marth64 changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.1 is released
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<nuxil>
i have a aduio file that i only want the frequencys 400-600hz and 1000-1300hz from, can i use ffmepg to do this? i was googeling a bit and some say use the banpass filter. some say use the equalizer, im a bit confused. and i need to cutoff to be steep. not a smooth cutoff.
<nuxil>
i was hopeing i could use ffmpeg to do this so i dont have to resort to audacity or tools alike.
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<grib>
nuxil: yeah i'm pretty sure ffmpeg can do what you want -- as you say, the `equalizer` and `bandpass` filters both can filter by frequency but the sharp cutoff you want might be better achieved with `firequalizer`
<nuxil>
what is `firequalizer`?
<nuxil>
a filter or a seperate tool
<grib>
it's a filter
<nuxil>
alright
<nuxil>
time to rtfm what this `firequalizer` is about 😛
<nuxil>
so just as simple as ffmpeg -i input.wav -filter:a "firequalizer=gain='if(between(f,400,600), 0, -100)'" output.wav i guess i could chain filters aswell ?
<grib>
yeah, that could well work. and for sure you can chain filters.
<grib>
for simple chains, you just put commas between them: filter1=arg,filter2=otherarg
<nuxil>
thanks 🙂
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<iconoclasthero>
is there ffmpeg documentation on using ffplay or ffmpeg to send (e.g., an mkv) video to v4l2loopback to create a virtual video feed, e.g., for a virtual webcam?
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