Bug Report AMD VCE game recording broken after Windows 10 1511 update

[xsimbyx]

As the thread title suggests, game recording after the november Windows 10 update is not working as it should, to put it mildly.

As you can see from the Youtube video I made (recording was more than 30sec long btw), it's a stuttery skippy mess.
Log file tells the story:

11:29:32.592: Output 'adv_file_output': Total frames: 1955
11:29:32.592: Output 'adv_file_output': Number of skipped frames: 1910 (97.6982%)

Almost all frames skipped. And it happens only in games. I can capture desktop no problem. I can also record games using software x264 no problems.

Before this Windows update, OBS MP worked flawlessly. GPU drivers don't make a difference.

Tried installing October Windows 10 rls again. Working. Back to november, broken. Fresh installs, everything else the same.


And yes exactly the same in every game I tried.

Sample:
https://youtu.be/vDvqQowKo7Q

Last log:
https://gist.github.com/3a6efc1b19997fe1893c

 

[DoAGoldeneye]

Can you try other encoders (perhaps drop resolution) to narrow it down to AMD VCE?

 

[xsimbyx]

Can you try other encoders (perhaps drop resolution) to narrow it down to AMD VCE?

Tried software x264 encoder at same resolution and it's working as expected:

Sample:
https://youtu.be/efRVEn1HMSw

Tried AMD VCE downsampled to 720p. Again, skippy mess just like 1080p

Sample:
https://youtu.be/otedOLTaJqc

I did try another recording app and AMD VCE works fine there. So looks to be limited to OBS MP.

 

[DoAGoldeneye]

Fair enough, The Mediafoundation Hardware Encoders OBS MP uses are known to be lacking. So maybe that's what's going awry here...

 

[xsimbyx]

Fair enough, The Mediafoundation Hardware Encoders OBS MP uses are known to be lacking. So maybe that's what's going awry here...

Other than the problems with CBR I never had any issues before, that's why it's so frustrating. I can't pinpoint what causes this recording problems in latest Windows 10 build.

Back to testing.

 

[xsimbyx]

I guess when you try almost everything, whatever remains is the likely cause, no matter how improbable ;)

As soon as I RE-enabled (it was obviously not enabled after Windows update and fresh installs) AMDs overdrive in drivers, recording with AMD VCE in OBS MP is working like a champ again.

To say that I'm surprised is an understatement. How could this even be related?

 

[DoAGoldeneye]

All I can say is: thanks for coming back to post the solution :)

 

[Vieron82]

I have a similiar problem.
I am using Obs Mp 0.12.2 and an R9 270 oc card.
I recorded a video in 1080p 50fps and 25Mbit bitrate.
Next time i recorded a video it was a mess, and the codec info show only about 9000 kbit/sec bitrate.
Where to enable again the overdrive?
Or i have a different problem?

 

[DoAGoldeneye]

I have a similiar problem.
I am using Obs Mp 0.12.2 and an R9 270 oc card.
I recorded a video in 1080p 50fps and 25Mbit bitrate.
Next time i recorded a video it was a mess, and the codec info show only about 9000 kbit/sec bitrate.
Where to enable again the overdrive?
Or i have a different problem?

You should start a new topic and attach a log file of a recording. We can then see if it's a similar issue. Also add what you used before the configuration that caused the issue..

 

[xsimbyx]

I have to chime in again guys :( It seems issue is not solved. I should have done more testing before I started celebrating.

It seems what really happened is I turned on in-game VSync and that improved things a lot. My guess is it lowered GPU usage by capping FPS to 60. Which resulted in smooth no-skipped-frames-recording in that scene. When I did more testing issue cropped up again.

I also noticed that I get smooth recordings if I lower in-game settings a lot, which makes no sense to me as this was never the case before. Also, VCE is a dedicated silicon AFAIK so it shouldn't matter.

Now I'll install a fresh copy of pre update Windows 10 and do some more testing.

 

[FxSlay]

Same problem here, I think this is a fault of a new drivers crimson 15.1.1 beta or just 15.1 Crimson. Its need to be tested :c I dont have old drivers.