OBS branch with AMD VCE support.
- Thread starter jackun
- Start date
Looking to buy radeon card for streaming, i cant really find any information about amd vce quality for streaming and most of tests i saw used extreme bitrate settings (like 35k)
i have several questions
1) How good amd vce 2.0 compared to haswell's quicksync?
2) How good amd vce 2.0 compared to x264 veryfast preset?
3) Is there any benefit of taking r9 285 over r9 290 for encoding (i know 285 is inferior by performance, but its vce block is faster)?
4) What's optimal bitrate for streaming with vce for 720p30, 720p60, 1080p30, 1080p60?
i have several questions
1) How good amd vce 2.0 compared to haswell's quicksync?
2) How good amd vce 2.0 compared to x264 veryfast preset?
3) Is there any benefit of taking r9 285 over r9 290 for encoding (i know 285 is inferior by performance, but its vce block is faster)?
4) What's optimal bitrate for streaming with vce for 720p30, 720p60, 1080p30, 1080p60?
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@jackun, From what I am hearing, remuxing to AVI (default FLV) does not work with AMF. Any thoughts? btw, @ZombieWizzard What version of OBS MP (VCE fork) are you using?
I cannot answer you VCE vs QSV in the contact of a version by version standpoint but in general, VCE 1.0/2.0 are about the same quality/speed with the exception of b frames, which have been added to VCE 2.0.
As for the r9 285, Yes, it has an encoder that can technically do up to 4k streaming, but we've only had one guy with one and was unable to test anything higher than 1080@60 since I believe that there is spotty support for this in general. That being said, if the encoder can do 4k encode, that means that it should be able to do 1080@60 using quality preset as long as there isn't code added to block this (which I believe there is); if it will work, it will be able to do it faster than an r9 290 (VCE 2.0) card in general.
VCE in general is about equivalent between superfast and very fast preset so about a 500 bitrate will be needed for equivalent quality.
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ZombieWizzard
New Member
I'm using the latest one that is on Jackun's github
Ok, so will i be able to get a decent quality of picture with 3500kbit at 1080p30 or 720p60 at vce 2.0 videocards?
I currently have haswell chip and use quicksync and it is blocky at 720p30 with 2400 bitrate, and it seem to lack a lot of details, that might be preserved by b-frames. I am really not impressed by quicksync at all and i really want to know if vce is better
720@30 needs 2500bitrate for best with x264 so with any hardware decoder, you'll need more, maybe 3000.
GOP 30 IDR 120
set the quality preset to balanced or speed preferably if balanced stutters at all. the speed preset wont lose any noticable quality as long as there is enough bitrate to compensate.
I would also set your bitrate a little higher VCE's max for 1080@60 is 50 000
Thanks, but i am setting the bitrate to vbr 25, 30 top, i know the max for vce is 50 but for some reason youtube encoder degrades it a lot past 35-40. My personal tests have led me to believe just as 10 is the max for 1080p30, 35-40 is the max for 1080p60.
Saturn2888
Member
I believe you're supposed to use CBR when uploading to YouTube.
No VBR is fine I believe
ZeroWalker
Member
Here is an old comparison one made for me between Haswell and VCE 1.0:
http://ohkd.screenshotcomparison.com/comparison/78902
Worth noting is that the bitrates weren't identical, i think both were around 20-30mbps, i can't remember which had more bitrate, might have been VCE.
However the difference even if you calculate the Bitrate was huge between them (as you can see).
Haswell is much worse than VCE.
Worth noting is that i also compared it to x264 Superfast, and it looks quite a bit better if i can remember correctly.
So VCE is not between Superfast - Veryfast but rather Superfast - Ultrafast.
(Worth noting is that if you tweak settings results may vary, this was a random quick test i asked for).
EDIT: looked up the old posts , apparently they were same Bitrate in the 26mbit version, it was just that 50mbps didn't work with the AMD. (If i remember correctly the 50mbps QS looked almost the same as 26mbps VCE).
http://forum.doom9.org/showpost.php?p=1683567&postcount=25
http://ohkd.screenshotcomparison.com/comparison/78902
Worth noting is that the bitrates weren't identical, i think both were around 20-30mbps, i can't remember which had more bitrate, might have been VCE.
However the difference even if you calculate the Bitrate was huge between them (as you can see).
Haswell is much worse than VCE.
Worth noting is that i also compared it to x264 Superfast, and it looks quite a bit better if i can remember correctly.
So VCE is not between Superfast - Veryfast but rather Superfast - Ultrafast.
(Worth noting is that if you tweak settings results may vary, this was a random quick test i asked for).
EDIT: looked up the old posts , apparently they were same Bitrate in the 26mbit version, it was just that 50mbps didn't work with the AMD. (If i remember correctly the 50mbps QS looked almost the same as 26mbps VCE).
http://forum.doom9.org/showpost.php?p=1683567&postcount=25
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Yeah, I've been saying between super and veryfast for a while now. do you think you could do your test with the current AMF? one for each speed/balanced/quality. Maybe just do a test for 720@30 15000. or maybe I'll do one when I get home, but I wont be able to test QSV...
ZeroWalker
Member
Sadly i wasn't the one doing those tests as i don't have AMD VCE, i am as interested in the results as you are:(
Especially interested how R9 285 is, cause if they improved the quality a bit more, it would clearly Superfast which would be splendid. (Though perhaps they already are there with Quality preset, i do not know).
Especially interested how R9 285 is, cause if they improved the quality a bit more, it would clearly Superfast which would be splendid. (Though perhaps they already are there with Quality preset, i do not know).
Kobata
Member
Here's a quick test: Google drive (download the videos, don't use the embedded viewer)
I wasn't entirely thinking, so I forgot to change the resolution down when recording the source, but it's letterboxed so cropping down to 1080p for VCE1/2 tests shouldn't be a very major issue.
The screenshots are from frame 350, and the VCE ones look fairly bad (possibly because of differences in keyframe placement as I didn't give any settings for that) -- in motion it seems fairly good, clearly better than ultrafast, possibly a little worse than superfast.
Pharaphobia
New Member
Hi I have been testing VCE since yesterday. I don't know why but I have been dropping a lot of frames for no reason. My GPU load wasn't even near 100% and my internet is more than fine.
Been trying to stream at 720p 60fps
https://gist.github.com/7c930cb10506226687e3
Been trying to stream at 720p 60fps
https://gist.github.com/7c930cb10506226687e3
What game? have you played with toggling dx10 interop?
I dont know if that was due to VCE or not but:
Code:
Number of times waited to send: 6094, Waited for a total of 22730599 bytesabove usually means that the connection was stalling out, but again, it could be the encoder but I only see 6 frames (0.02%) dropped due to encoder lag...
EDIT: your ingest also took 1300ms to connect. can you try the same settings via x264?
Pharaphobia
New Member
Hi, thx for fast replay..
When I stream with x264 there are 0 dropped frames, but it could be due to bad server (Prague is known to be total crap)..
The game i stream is World of Warcraft (64bit client)
P.S: Is my settings actually okay? the advanced settings has way to much unknown information for me :D
When I stream with x264 there are 0 dropped frames, but it could be due to bad server (Prague is known to be total crap)..
The game i stream is World of Warcraft (64bit client)
P.S: Is my settings actually okay? the advanced settings has way to much unknown information for me :D
lately, the LOG is difficult to read as for some settings. like whats your GOP set to? IDR? are you usings host or dx9 or dx10?
Pharaphobia
New Member
Think this would be easier for you sir :)!
