ChanServ 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 7.1.1 is released
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<tm512`>
so I'm trying to figure out how I can set the sample format for a pulse (through pipewire) input
<tm512`>
pactl says for this input: Sample Specification: s32le 2ch 48000Hz
<tm512`>
but ffmpeg opens it as s16le
<tm512`>
I see that -f pulse lets me specify the number of channels and the sample rate but nothing about the sample format
<furq>
-c:a pcm_s32le before -i
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<tm512`>
ah thanks, that appears to work
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<Richardcavell_>
I'm playing sounds through a 6-bit DAC on an old computer system. I'm taking the output of ffmpeg (monaural, 8khz) and putting it through a simple process of and #$fc
<Richardcavell_>
It creates a lot of hiss. Is there anything I can do to remove the hiss?
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<kepstin>
Richardcavell_: consider using a noise-shaping dither (instead of triangular) to move the energy somewhere less noticeable, and/or reducing the dither power ("dither_scale" option) which will increase distortion a bit but reduce noise.
<kepstin>
at 8kHz, noise-shaping dither will probably not be effective
<kepstin>
so the main thing you can do is reduce the dither power
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<Richardcavell_>
I don't really understand everything that you said
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<darkmushroom>
Hey ffmpeg gang! I'm still trying to get ffmpeg to configure with whip enabled, but no luck yet. It's stuck on an openssl dependency, but I compiled and installed openssl from scratch. Still no go.
<BtbN>
You'll need to read the config.log, and fix what it's upset about
<BtbN>
and manually installing openssl is a REALLY bad idea
<BtbN>
that's probably the single worse library to do that with
<BtbN>
*t
<BtbN>
Your distro will package everything you need to build openssl enabled ffmpeg.
<darkmushroom>
I'm sure you're right BtbN, but I have openssl and openssl-dev installed and that wasn't getting me anywhere.
<BtbN>
Well, gotta read the config.log then to find out what's wrong
<darkmushroom>
I'm on it hoss, just not sure what I'm looking for.
<BtbN>
The errors in config.log that prevent it from enabling what you want enabled
<kasper93>
don't forget to install pkgconf too
<darkmushroom>
Appreciate the tip kasper93. Looks like pkgconf 2.3.0 is installed and online.
<kasper93>
than look at the end of config.log it will tell you what's up
<darkmushroom>
I think the killer is this line: "WARNING: Disabled dtls_protocol because not any dependency is satisfied: openssl"
<BtbN>
yes, it's not finding openssl
<BtbN>
so you'll need to read the config.log and find out why
<darkmushroom>
I got eyes on it now. While I look, I just want to say I really appreciate the help.
<darkmushroom>
The error right next to the warning messages is something about missing stdbit.h . Naively, it doesn't seem related (other than appearing close to the error message).
<BtbN>
you want to read the log from bottom to top
<BtbN>
there's a lot of checks that are normal to fail
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<darkmushroom>
ah hold on. Might have something juicy. amf/core/version.h -> no such file or directory -> compilation terminated
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<BtbN>
amf got nothing to do with anything here
<BtbN>
Really, just read the log bottom up
<darkmushroom>
package 'vulkan' not found. That also sounds unrelated
<BtbN>
very likely the very last check it did before bailing is the one of interest
<darkmushroom>
Hm. that's the 'compiler lacks stdbit.h' error.
<BtbN>
if not, try explicitly adding in --enable-openssl
<darkmushroom>
Sure thing, let me give it a shot
<darkmushroom>
are you KIDDING me xD
<darkmushroom>
added that flag, snapped together no problem.
<darkmushroom>
clearly see whip listed under muxers. I think this might be it BtbN
<darkmushroom>
making the project now
<BtbN>
so it was just selecting gnutls or something over openssl?
<darkmushroom>
I wish I new friend. I didn't see any warning that would lead me to believe there was a dependency conflict - but then again I'm no wizard at compiling from scratch.
<darkmushroom>
*knew
<BtbN>
it's not a conflict
<BtbN>
there just can only be one singular tls backend enabled
<darkmushroom>
I see, I see. I didn't find it, but I bet somewhere in the log there was a hint it was using a different cryptography backend.
<darkmushroom>
Amazing. No longer complaining about missing whip protocol. We did it.
<darkmushroom>
Thank you for all your help BtbN!!
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<clevor>
How do I reproducibly convert mp3 files to ogg files?