Avatar SDK 512 Bits instead of 256 Bits (Face Tracking)
Shinyflvres
VRChat’s Avatar SDK still supports only 256 bits for parameters in late 2025 and likely even going into 2026. This is far from sufficient, especially with current face-tracking technologies. We now have new capabilities such as eye tracking, mouth tracking, and more. Many upcoming headsets will include these features, and there are also external VR face tracking modules on the way.
I have created face tracking setups for Karin, Rusk, Manuka, and several other avatars. To achieve even remotely good face tracking, you already need around 210 to 240 bits. After allocating that, there are no remaining bits for any toggles at all, no clothing switches, no material changes, no animation triggers. Even installing systems like GoGo Loco becomes nearly impossible because there are simply no bits left.
By the end of 2025, VRChat should finally increase the limit to 512 bits on PC, while Quest can stay at 256 if necessary. We are living in the future, not the past.
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Smash-ter
I feel that it'd be better to ask them to have native support for face tracking
SebrinaRena
I agree. I've recently added toe tracking, and that too currently has to eat an additional 52 bits of expression data, right next to face tracking, and etc. And many compromises had to be made on the tracking accuracy as we do not have access to provide real quaternion rotation.
In order to have an avatar with maximum visual expression, big compromises have to be made, even with MemoryOptimizer or other compression tools compressing down clothing/accessories toggles.
And things that require realtime updating cannot be compressed down without compromising tracking quality.
✩Frisk✩
All platforms would have to be 512 to keep things synced.
pinkiceygirl
Either that or finally support face tracking natively so that we don’t really need these systems in the first place.
BaconPancake·
the requirement for a parameter compressor on most featured avatars with face tracking is unreasonable
inseyy
agree
MatuLives
With compressor + binary parameter budgeting + encoded wardrobe modes, you can run full FT (eye/mouth/cheek/brow/tongue), OSC extras, and even BCI appendage control today without slamming into the memory wall at the cost of slamming my own skull against a wall
But none of this removes the need for a 512-bit upgrade on PC, we’re overdue
Shinyflvres
MatuLives
Im aware that you can compress parameters and that’s what i already do. Yet still for detailed face tracking you will need alot of bits regardless if you compress. 256 not much enough especially when you want to add at least a few toggles for clothes/materials or props. With compression i still reach already 175-200 Bits for a Detailed Facetracking (Eye Tracking, Mouth Tracking, Tongue Tracking, Cheek Tracking)
anthonyjh2020
agreed
SergioMarquina
I do agree. After face tracking, we got barely anything to do cool stuff. And face tracking with extreme detail already requires insane amounts of bits that sometimes, let alone cool stuff, you can't add anything. 512 bits should be what's supported going forward
feliai
YES PLEASE - only 256 Bits is atrocious when using Face Tracking
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