Highest bitrate with Quest 3 in Virtual Desktop with VDXR runtime (AV1)

[warmachine79]

Hey guys, is there a way to modify the highest possible bitrate for AV1 in Virtual Desktop when using the VDXR runtime on the Quest 3? I have a stable 2.400 mbps connection (ASUS Rapture GT6, PC connected via Etherent, headset in a distance of 1,5m with direct los), latencies are great, but it only gives me have bitrate of 200 Mbit. This seems to be the maximum. I cannot remember where I read it, but I think there was some manual tweaking I can do to get to 500? I want to try to increase it to the point where latencies become impaired. 

[slughead]

Have you asked on the Virtual Desktop discord server? That's where their support team operate.

[Maddaawg]

3 hours ago, slughead said:

Have you asked on the Virtual Desktop discord server? That's where their support team operate.

I didn't ask but someone had on the same day I was looking and while everyone else's question were being answered his was ignored, twice. So I didn't want to ask myself.

On 8/9/2024 at 2:58 AM, warmachine79 said:

Hey guys, is there a way to modify the highest possible bitrate for AV1 in Virtual Desktop when using the VDXR runtime on the Quest 3? I have a stable 2.400 mbps connection (ASUS Rapture GT6, PC connected via Etherent, headset in a distance of 1,5m with direct los), latencies are great, but it only gives me have bitrate of 200 Mbit. This seems to be the maximum. I cannot remember where I read it, but I think there was some manual tweaking I can do to get to 500? I want to try to increase it to the point where latencies become impaired. 

You can change the Streamer App to H264+ and I think that goes to 4 or 500. I think the WiFi connection speed is not the same as data transfer speed when including the codec processing. I also have 2,400 mbps and think 200mbps on the AV1 codec is pretty low. I know the app sets the actual speed when first starting and there is a setting in the streamer app to auto adjust the bit rate.

You might try the Discord, I searched and found nothing but the unanswered question I mentioned above.

[slughead]

I don't have an answer for changing the VD bitrate beyond what the configuration allows. However, it's worth noting that the AV1 codec is far more efficient and doesn't need a high bitrate. It has a 46% to 50% higher compression rate than x264, meaning it can do the same with fewer bits.

From NVIDIA: "AV1 is the new gold standard video format, with superior efficiency and quality compared to older H.264 and H.265 formats."

Improving Video Quality and Performance with AV1 and NVIDIA Ada Lovelace Architecture | NVIDIA Technical Blog

Nvidia has demonstrated bitrates as low as 8mbps to be significantly superior to other codecs.

[Qcumber]

On 8/9/2024 at 10:58 AM, warmachine79 said:

Hey guys, is there a way to modify the highest possible bitrate for AV1 in Virtual Desktop when using the VDXR runtime on the Quest 3? I have a stable 2.400 mbps connection (ASUS Rapture GT6, PC connected via Etherent, headset in a distance of 1,5m with direct los), latencies are great, but it only gives me have bitrate of 200 Mbit. This seems to be the maximum. I cannot remember where I read it, but I think there was some manual tweaking I can do to get to 500? I want to try to increase it to the point where latencies become impaired. 

Your bitrate will ultimately be limited by the quality of your WiFi signal. The setup options often discussed on VD discord are:

1) Make sure you use a dedicated router with a dedicated channel.

2) Check your local WiFi signals to make sure none of your neighbours are using the same channel. 

3) If you can't find a good clean channel then try building a makeshift Faraday cage with a cardboard box and aluminium foil. It just needs to protect your router antennas against the source of the interfering signal.

The best I can get is about 350 Mbps. However I find that h264+ at 200-300 or HEVC 10 bit at 150 Mbps are very good. 

[Maddaawg]

1 hour ago, slughead said:

From NVIDIA: "AV1 is the new gold standard video format, with superior efficiency and quality compared to older H.264 and H.265 formats."

I found that AV1 worked much better for me than H264+. The question really is if 200mbps which seems to be the max for VD in AV1 can be improved to 500 and is there even a need for it.

 

1 hour ago, Qcumber said:

The best I can get is about 350 Mbps.

With which codec?

[Qcumber]

7 minutes ago, Maddaawg said:

I found that AV1 worked much better for me than H264+. The question really is if 200mbps which seems to be the max for VD in AV1 can be improved to 500 and is there even a need for it.

 

With which codec?

H274+. I have a Quest Pro

Edited August 12, 2024 by Qcumber

[Foxkitos]

Guys did anyone noticed a loss of quality in vr since the last update? 

[kablamoman]

AV1 may be more limited in terms of processing latency. I think that may be why it's limited to a lower value. Could be that the SOC in the Q3 may be taxed a bit too much if the bitrate gets much higher.

I wouldn't mind being able to eke out a bit more, myself, as down low to the ground it seems the codec (at 200 Mbps) starts to struggle to retain finer details with all the grass, tree and ground textures overloading it with detail, even at 72hz. I would rather not use H264+ as it brings with it more noticeable color banding with the color gradients (especially noticeable in the sky when looking up to the darker portions).

Edited August 12, 2024 by kablamoman

[Maddaawg]

7 hours ago, Foxkitos said:

Guys did anyone noticed a loss of quality in vr since the last update? 

I can't say for sure as I was changing settings around and trying out QuadViews. I didn't notice blurry guages with QV prior to the patch but was obvious after the patch. I removed QV and the guages were back to normal. Other than that I haven't noticed it. 

What headset and how is it connected?