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lina

@lina@vt.social

Hello everyone, Asahi Lina here! I'm a Linux developer VTuber!
I also help run VT Social!

EN/日本語|she/her|🎨 #AsahiLinArt
Model https://twitter.com/NananoNanase
Design https://twitter.com/shiranui_illust

Dieses Profil is von einem föderierten Server und möglicherweise unvollständig. Auf der Original-Instanz anzeigen

lina , an Random Englisch
@lina@vt.social avatar

It's really silly that OBS doesn't support multichannel audio input (splitting it into multiple audio sources)... it makes the OBS mixer useless for mixing audio in sync! ;;

If you mix all audio outside of OBS (like I do) it works well, but then you can't record split tracks...

Most people will tell you to use something like VoiceMeeter (on Windows) to send audio via separate virtual devices to OBS... but that doesn't keep them in sync since OBS considers them completely independent so there is a random delay offset between them (I tested it).

lina OP ,
@lina@vt.social avatar

BTW, audio monitoring also has a random offset in OBS (since the monitoring path is completely separate from the stream path). The monitoring mix you hear is not the same mix that goes out to the stream!

lina OP ,
@lina@vt.social avatar

Basically I only use the OBS mixer for stuff like the intro/waiting screen BGM (where I don't care if it's in sync with the mic). Everything else including my stream BGM gets mixed in outside of OBS ^^

lina OP ,
@lina@vt.social avatar

@wuest Yeah, that doesn't guarantee sync between tracks but at least you can fix it in post if you need to... I did something similar for Cyan's stream just now (one track full mix, one track voice only).

lina OP ,
@lina@vt.social avatar

@scherzog That's the problem, if you have separate instances of stereo streams there is no guarantee that they are synced together... there needs to be something on the OBS side that takes a synchronized multichannel input natively and splits it into sources/tracks in a way that guarantees the sync is preserved, but I don't think that exists...

lina OP ,
@lina@vt.social avatar

@imikoy I've done that before ^^;; though for streams it's overkill, might as well just use jackrec and record a parallel multichannel wav for each stream.

lina OP ,
@lina@vt.social avatar

@scherzog OBS supports routing to separate tracks, so that is in some way a "multichannel" concept... but I don't know if it supports it at the source level. It might need some core code changes...

lina OP ,
@lina@vt.social avatar

@lanodan Depends on your setup, but at least on Windows definitely enough that I can tell listening to the mix when singing karaoke and stuff like that.

If the underlying audio device is the same at the end of the day then at least it should not drift over time during normal usage. However, if there are any glitches due to CPU overload or things like that, they could cause the sync to change suddenly if different sources skip different amounts of audio.

lina OP ,
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lina , an Random Englisch
@lina@vt.social avatar

💫 USB Reverse Engineering stream! 💫

I bought a new audio interface to redo my setup with @cyan, but there are no Linux drivers! So let's reverse engineer it and write some~ 🚀

🕐 June 30th at 14:00 JST / 5:00 UTC
▶️ https://youtube.com/live/XIR0xVFsToo

lina OP ,
@lina@vt.social avatar

@be @cyan That's for a class compliant interface that works with standard drivers. The Digiface is not, so it won't work with that!

lina OP ,
@lina@vt.social avatar

@be @cyan That one apparently uses MIDI SysEx to communicate, which is too different to USB so it's unlikely to have much in common... (it doesn't even use 8-bit bytes but rather 7-bit data units!)

lina OP ,
@lina@vt.social avatar

@be @cyan Yes but encoding parameters and mixer settings over SysEx is probably very different to encoding them directly into USB primitives like control messages and bulk transfers...

thephd , an Random Englisch
@thephd@pony.social avatar

Well, after wasting a bunch of time trying every combination of login names imaginable with the password I know works I guess it's time to just completely re-do my Mac from the ground up, because Why Not.

lina ,
@lina@vt.social avatar

@groxx @thephd Internet recovery isn't a thing on Apple Silicon ^^

The System recoveryOS is stored on NVMe, so if that fails to boot you need DFU like an iPhone.

lina ,
@lina@vt.social avatar

@thephd @Sobex It can't make anything worse so you might as well try it! Fedora should have usable packages (you might need to select an older macOS version to restore since I think the latest builds triggered some issues that just got fixed but not released yet).

Can you still get into recoveryOS though? If you can then it should be fixable without DFU... (DM me if you want me to help troubleshoot ^^)

lina ,
@lina@vt.social avatar

@Sobex @thephd They actually used to support displaying that over HDMI... but Apple removed it in an update early on for some reason. Maybe they didn't like that it only worked over HDMI and not over Thunderbolt/Type C?

lina ,
@lina@vt.social avatar

@Sobex @thephd I don't think Apple Silicon ever had that ^^;;

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