Streaming quality issues in AV1 with dark images?

[Jsmith345]

Hi,

If i stream in AV1 on YouTube, i am losing quality in games with dark scenes.
When streaming to Twitch in H.264 via Multi RTMP Plugin as second encoder, it's not that bad, even with much lower bitrate.

Is it caused by higher compression? I mean @20.000kbps bitrate, this shouldn't be an issue.

You can find more details about this in the pictures below, my settings and in comparison with a brighter game (only up!)

Best regards
JSmith

 

[Harold]

Provide your OBS log please.

 

[Jsmith345]

Provide your OBS log please.

Here's the log file: https://obsproject.com/logs/pyPyln1UpOLb9x5K

 

[Harold]

And if you change your color settings in settings - advanced to NV12 709 limited instead of 601?

 

[Jsmith345]

And if you change your color settings in settings - advanced to NV12 709 limited instead of 601?

My issue is not about the brigtness of the picture itself. If i would change to 709 limited, my image would be darker, than the ones from my gameplay footage. With this color settings, the picutre almost matches 1 by 1. It took me a long time to figure out this stuff.

BTW i use a dual pc setup.

It looks like the picture in AV1 becomes very compressed in dark pictures, what sounds kind of logical, because a significant part of color information is missing. You can see a difference between AV1 and H.264 in the pictures, which has a littlle less amount of artifacts.

 

[Suslik V]

As long as you recording 8-bit videos you can use this: https://obsproject.com/forum/resour...t-color-range-settings-guide-test-charts.442/ test pictures (test charts). It may give you better understanding what is going on here.

 

[Jsmith345]

As long as you recording 8-bit videos you can use this: https://obsproject.com/forum/resour...t-color-range-settings-guide-test-charts.442/ test pictures (test charts). It may give you better understanding what is going on here.

You also don't understand my issue. I already did the color calibration and the pic from my capture card matches perfectly with my image from my main pc.

We already had this in another topic, look here:

4K60 Pro Mk.2 weird color and resolution issues

Hello, Hopefully my english i good enough to descibe my problem. Since weeks/months i tried to master my dual pc setup for streaming and recording at the same time. I fixed a lot of problems, but now i am stuck with some color and resolution issues. #1 I am cloning my main monitor (ASUS ROG...

obsproject.com

BUT THIS IS ABOUT STREAMING QUALITY

 

[Suslik V]

Why do you think that streaming is something special? Server, browser, OBS - everything can has color misinterpretations (transfer, receive, re-encode, transfer, receive, view). What changed, man? It's just soft and hardware. Everyone do mistakes. Can encoder implementation be faulty in OBS? Yes. Can transfer be wrongly tagged? Yes. Can server misinterpreted your data? Yes. May plugin be faulty? Yes. (All this happened before in OBS). Use range charts (black-n-white one) to find out what exactly missing in your final picture.

 

[Jsmith345]

Okay, ill upload a picture for comparison soon and you'll see there no unbalaced coloring.

I can understand, that you might think it has to do something with it, because the ingame footage is so dark. But the game itself really these dark settings, even after raising gamme values. It might be the programmers fault.

Another game with a similiar dark environment looked much better on stream with the same settings, or even lower bitrate in av1 (15.000 kbps)

 

[Suslik V]

OK. Make sure that the game doesn't change its lightening settings (some games has "auto" mode).

 

[Jsmith345]

OK. Make sure that the game doesn't change its lightening settings (some games has "auto" mode).

Auto Mode? You mean completely on stock settings for brightness etc.?

 

[Suslik V]

I mean lightening (light maps, dynamic lights, caustics, volume lights etc. - graphical settings of the game itself). What I see on screenshots - is more like different lightening of the 3d scene in the game (but I may be wrong).