Which player can play the 300+ Mbps studio master?

al7

https://www.sexlikereal.com/scenes/yacht-vr-fantasy-with-stunning-president-mermaid-97175

I tried several players on quest 3.
And couldn't find a way to play it without stuttering or unsynced audio.
Which player can play the 300+ Mbps studio master?

PS. Streaming version is not an option. Its video quality is too low.

adinihsan

al7 if it doesn't work on Heresphere or Deo it should be hardware limitation. 300mbps sounds insane though, idk whats with this studio

al7

it works in most players. But the video is played much slower.
Like maybe 0.75x
And the audio is out of sync.

I wonder what's the max bitrate that Quest 3 can support.
I know 120 Mbit/s is ok

AshSLR

The Meta Quest 3 supports a maximum bitrate around of 200 Mbps when using the H.265 (HEVC) and AV1 codecs

WebXRChief

I developed a high-performance, heavily optimized player for Galaxy XR, and I could make a Quest 3 build and see how it handles the 300 Mbps studio master.

I’d need a test file though, ideally the same file or something with similar bitrate/codec parameters.

I’m traveling right now and didn’t bring my Quest 3 with me, so I won’t be able to test it on the actual headset immediately. But I can prepare the build and test it later when I have access to the headset again.

If anyone is interested in pushing this and experimenting with very high bitrate playback on Quest 3, I’m happy to give it a try.

al7

AshSLR ok it looks like Q3 can play 300+ Mbps 8K 60fps HEVC. I experimented with encoding params for such high bitrate master . And could get several samples that work perfectly.
I'll experiment more and will find real bitrate limit for Hevc decoder on Quest 3

bboy7895

you can play it on pcvr

al7

bboy7895 I can't. PC not powerful enough. Also It will be reencoded in real time and will lose the details and original quality.
And I like to watch videos in my standalone Quest 3

jommy

The issue isn't so much the bitrate its self, it's more than it's mpeg4 and not HEVC?

@AshSLR I wish SLR gave a mediainfo of each download under an (i) button so we can judge before downloading - takes no time at all to generate 😃

AlexSLR

jommy Can you please be more specific about what info you mean?
The codec is already shown for downloads.

jommy

AlexSLR

Showing the codec is good, but it's super super minimalist

Example scene https://www.sexlikereal.com/scenes/your-new-friends-25732

The thumbnail previews has a lot more useful info at the top but those are sort of out of the way and not near the downloads page (and only contains info for 1 file version):

The download page currently lacks so much info for people that want to compare the files before downloading
HEVC and H.265 are the same thing, maybe best to stick to one word to avoid confusion

This is the kind of data mediainfo shows (I removed a few spammy lines):

General
Complete name                            : SLR_SLR Originals_Your New Friends_original_25732_MKX200_FB360.mkv
Format                                   : Matroska
Format version                           : Version 4
File size                                : 43.3 GiB
Duration                                 : 51 min 32 s
Overall bit rate                         : 120 Mb/s


Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L6@High
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 51 min 31 s
Bit rate                                 : 120 Mb/s
Width                                    : 5 800 pixels
Height                                   : 2 900 pixels
Display aspect ratio                     : 2.000
Frame rate mode                          : Variable
Frame rate                               : 59.940 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.119
Stream size                              : 43.1 GiB (100%)
Writing library                          : HEVC Coding
Language                                 : English
Default                                  : Yes
Forced                                   : No
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709


Audio #1
ID                                       : 2
Format                                   : Opus
Codec ID                                 : A_OPUS
Duration                                 : 51 min 31 s
Bit rate                                 : 193 kb/s
Channel(s)                               : 10 channels
Sampling rate                            : 48.0 kHz
Frame rate                               : 50.000 FPS (960 SPF)
Compression mode                         : Lossy
Stream size                              : 70.9 MiB (0%)
Default                                  : No
Forced                                   : No
FB360                                    : <fb360> /   <audio> /     <AudioChannelConfiguration /       schemeIdUri="tag:facebook.com,2016-08-16:fb360:audio:channel_layout" /       value="tbe_8.2" /> /   </audio> / </fb360>

Audio #2
ID                                       : 3
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : A_AAC-2
Duration                                 : 51 min 32 s
Bit rate                                 : 344 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 127 MiB (0%)
Default                                  : Yes
Forced                                   : No

It's very useful when comparing each file version before downloading and can save SLR some bandwidth, i.e. people pick the correct DL first time, or they decide the larger file size isn't worth it based on the mediainfo

It's also pretty standard to include mediainfo for video downloads 😉 The person(s) that decided on the thumbnail header knows what I mean!

I think it would be a very welcome feature to have and costs almost 0 compute to generate for every scene

AI mock-up

AlexSLR

jommy Thanks for clarification 🙏

al7

al7 ok in my experiments I couldn't make hevc with more than 300 Mbps to play without stuttering or slowdowns.
So I guess for the hevc decoder of Quest 3 this is the limit: HEVC 8192x4096 300 Mbps.

Also it really depends on resolution.
For example HEVC 4k 500 Mbps is played without any issues on Q3

PS. to make this 8K 300Mbps work on Q3, I had to use x265 and turn off its deblocking param

OpeningThng19

A chunk of stuttering could easily be due to the storage medium the video is on HDD/SSD, m.2 along with the speed and sustained performance of your WiFi.

al7

OpeningThng19 in my case it isn't. highspeed storage
its just 300 Mbps video, remember?
also 500 Mbps and higher for 4k video doesn't have any stuttering.
But you are right, the storage or network speed is very important.
I think didn't describe the issue precisely.
Actually there's no stuttering
The video is played slower than 1x
And if it was encoded with some decoder-heavy params like deblocking >0 then it's played much much slower than 1x. Possibly closer to 0.7x