Best TWITCH Stream Settings for Nvidia users! OBS 28.1 BETA PRESETS
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- เผยแพร่เมื่อ 17 ต.ค. 2022
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The new OBS 28.1 beta is weird... it adds some new NVENC presets, but are they as magical as it seems?! In this video, I test P1 through P7 of the new NVENC H.264 encoder and test it across Lovelace, Ampere, Turing, Pascal, and Maxwell generations to see what the best settings for you would be.
New StreamGuides tutorial channel: • Shuffle your VLC sourc...
Read more about VMAF: netflixtechblog.com/toward-a-...
Download the beta: obsproject.com/forum/threads/...
Learn about the AV1 encoder in this update: • OBS NVENC AV1 Beta is ...
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This was super helpful. I recently updated to the official 28.1 version and all of a sudden I had so many options I had not idea what I was looking at.
Right as I was looking for some settings to fix the pixelation on my stream! Thanks EposVox!
You are doing an incredible job. Thank you for all the testing
Was waiting for this video.would love to see the comparison between hevc via hls VS h264 with this tuning.nice work btw.
Love the amount of effort you put in your work Addie!
Also as someone who just went from a GTX 1070 to a RX 5700 it kinda stings seeing all the NVENC support.
couldve done some research lol, nvidia has a few more + better features than AMD
so if you dont stream, AMD is the best budget option for gpu
@@2klogic I was already aware of that, I decided to get a AMD card again because I wanted to check out how content creation was on AMD after owning a RX 570 before the 1070 and It was so horrible that I sold off the RX 5700 for a GTX 1080. I was that desperate.
@@chillroze been there done that… haha sucks doesn’t it Nvidia is just the only option unless all you want to do is game.
You have other things to be happy about! Multi-monitor issues are next to none, the fps per dollar is superior, and the anti-lag feature doesn't impose a hard limit to your FPS in vsync+gsync mode the way Nvidia reflex does.
This is exactly the type of video I love. These deep dives help me put to rest that nagging feeling that I've improperly set my OBS despite hours of tutorials and guides. For those of us streaming on TH-cam with access to HEVC and fewer bitrate constraints, are these findings still largely applicable or should that platform be approached with a different mindset settings wise?
Awesome video! Love these settings breakdowns!
Massive news. Great research as always!
My dear sir you are a genius. Thank you for checking and making this settings video. I was really looking into getting more quality and performance out of my 2070 and this video saved my life as the new OBS version is quite puzzling. Thanks again!
what settings did you go with?
I think that it would be interesting to also have a Nvidia encoder optimization guide as you did with AMD a while ago for people that doesn't care too much about streaming and more into recording content, but as always, great content Mr. Stream Professor!! Cheers form Spain!
Yeah I would love that too, even 5 months later
I am very excited for the Nvidia users. As an AMD user mainly, I'm glad we got improvements recently as well. I'm still sticking to HEVC HDR streaming on TH-cam but I've definitely shared this with my Twitch Nvidia users!
These presets were added to the NVENC SDK in 2021, and just hadn’t been added to OBS yet because it’s a massive amount of work for Jim and the other OBS devs to completely revamp the encoder pipeline a second time. Had nothing to do with AMD’s minor updates they quietly released this year to minimal gains lol
@@EposVox Oh gosh, sorry, definitely didn't intend for that to come across serious at all. More along the lines of "we just got ours looking good and now theirs are better again!". The OBS devs are carrying an entire industry on their backs with their work and if I was in any place to support them more I absolutely would. Thank YOU for bringing this to more people's attention as well. You are creating an entire new generation of live streamers by giving them a clear resource to follow.
Haha all good. Some people get real srs about their competition claims and don’t consider the amount of time it takes for these things to get made hehe
@@EposVox I have an A380, 3070 and 6800XT. They all do something 'better' than the others in some way, and they could all be replaced by a single 4090. I celebrate the differences and just enjoy the improvements as they come. The lifeline of being a nerd.
Someone who actually supports competition. Hells yeah
thank you for your hard work man
keep it up ❤❤
Is P6 QRS still the best if you have a dedicated streaming PC with a 3080? Plenty of headroom for P7 full res multipass.
I just tested the 28.1 Beta after watching your video and I'm surprised how optimized was the NVENC over the years! I'm using a dual GPU Setup on my rig (Quadro K620 for Encoding, GTX 1060 6GB for Gaming) and tested out P6 and P7 on my Quadro and I'm happy to report that it and works just fine compared to the old presets and doesn't overload my secondary GPU anymore.
The upcoming update would be definitely helpful for my needs since I can't afford getting a new GPU for the meantime.
I use nvenc, qsync, x264 in one pc. I wanna put AMD vce too in it. Xd One pc with all encoder types. Of course Its a dedicated pc.
Single most helpful OBS encoder-setup video
Thanks again for another helpful video!
Thank you for all the hard work you do with covering all these updates and such. really helps me out! I assume a lot of these settings can be used for TH-cam streaming as well?
Just came back to say, these settings have bumped my quality up by a hugeeee margin! I went from a blocky mess in overwatch team fights, to damn near clear as day! For anyone else, I used: 1792x1008 scaled output, 7k bitrate, P6 slower (rtx3080), tuning high quality, profile high, 2-pass quarter, max-b frames 2, key interval 2, Psycho on. Amazing find EposVox, thank you once again!
put bitrate on 6000
@@michaelpeterson6255 u trippin
@@michaelpeterson6255 thats not true lol 1080p is much sharper
@@HasimFN For some depending on system specs 936p can work.
@@HirXeBomb i didnt say it doesnt work i said 1080p is sharper
Great work, great info!
Hi Epos.
I appreciate all the work you put in.
I have a question. Considering that this video released 5 months ago, as of today, can we say still say the P6, Two Passes QRES is still the best option to go for Twitch live streaming? Or have you found any better options or outcomes by your experience considering the recent OBS updates?
I'm wondering the same. Did you found an answer to your question?
Ayy thanks for this vid, been waiting for this.
Is 936p P6 the meta? or should twitch streamers be gunning for 1080p now?
Don't wanna come as rude, but 936p is a trash resolution to use in any scenario. Just because it's divisible by 8, doesn't make it good.
Yes, lower resolution that follows the "rule of 8" it's easier to encode in a specific bitrate, BUT somehow people forget that there's no display out there that supports 936p. Yes, you can stream at that resolution on Twitch, but on YT it will get converted to 720p.
Why? Because it's not a standard. You still have to downscale from your actual resolution, to 936p, which generates more encoding stress than just streaming native/ half of your resolution.
And that downscaling creates muddier image, lack of native resolution crispness, pixel blocks artifacts on high motion and also asks for more decoding power from your viewers, as they're 99% watching you from a 1080p/ 1440p/ 2560p display (excluding weird smartphones resolutions).
So no, 936p "ain't meta", nor 900p, nor any stupid resolution like that. I don't get why people still use it, following these other streamers/ youtubers advice as "the best for shooters", etc...
What Epos showed in this video it's all you need. And I hope he will one day adress this issue and advice against using these resolutions ever.
Probably. I’ve been using 1080p for a while and perfectly happy with it - but 936p would still see advantages here
@@sidesketch most people watch with chat open, they aren't running full 1080p on their 1080p screens. Negates a bit of the "true resolution" argument.
I agree about TH-cam bitrates though. Always go higher res.
@@XDeadzX There's a difference between window size and resolution. If you watch a 1080p stream, you're decoding a 1080p source. It's just you're "running" that through a smaller "canvas preview", but the original stream resolution is still being passed through your decoder. When you're running the stream at fullscreen, you're increasing the GPU usage due to the "preview" increasing in size, but initial decoding will be done regardless.
Adding P levels/support in OBS is great.
Dont consider it a waste, I've been pulling my hair out with my new pc trying to figure out the diffrence. This has put me at ease
Right I built a beast of a computer and I'm like tf? lol gotta have a dual setup
Can you do a full follow up on your recent Quick Sync findings??? Been playing with it , love to hear what you find across all their different bitrate control options for OBS. Great video here as always 🤘
Trying to hold out for the updated implementation
@@EposVox a new version is coming 👀👀 did not know this, fair enough!
Just a note about nvenc vs x264 ffmpeg has had the new nvidia encoder stuff for a while, and with these settings vmaf puts it above x264 very slow in the results.
-preset p7 -tune hq -profile:v main10 -tier high -level auto -temporal_aq 1 -nonref_p 1 -multipass fullres if i compare it to x264 very slow (2 pass) 10bit the nvenc usually scores 2-3% better results from vmaf given the same bit rate. Also I get about 130fps (3090 Ti) encodes on 1080p vs like 9fps on the x264
Their new encoder is really good. I am going to have to see how it does with the obs beta!
Thanks for the video really cool!
Most of those are the same I used here, but 10-bit isn’t valid to use as 10-bit is generally unsupported in h264 by most playback scenarios, and not supported for any streaming use.
Thank you so much!
im still confuse with Preset, Tuning, and Multipass Mode,,, can you make that video for explain how its work? and what the impact, on CPU and GPU. thanks
Wait... confused. So is the collective agreement to have Two passes (quarter) or is the general agreement Single pass? video showed one setting, but the next cut mentioned another.
I have an issue where my delay gets longer and longer till my stream is like several minutes behind. I dont see any reason for this on my end. I'm not dropping a bunch of frames and my bit rate stays up. Any idea how I could fix this?
@EpoxVox hello , i was streaming a high n fast motion game with a 1060 6gb on 1080p 60fps 8k bitrate, now should i use quality, p6 and two pass? Or p7 ? Thanks
Nice! Wonder how the quality is affected if there is a webcam + overlay (have 3 minutes left will watch to the end of its there)
Hey at 02:37 how did you get the exact same footage for 2 different encoders ??
what does tuning exactly do? and if i use high quality tuning takes more bitrate??
PD: thanks for the rest of the info, configured again obs and got some less pixelated cam in a pretty speedy game, love these videos
Was just asking this question the other day, and wasn't finding any new information, so this is some pretty good timing. Looks like I'm going to be stuck on Beta versions of OBS for a little bit. lol.
I need to have look-ahead off for my uses, is it confirmed that p5 and above force on look-ahead? If so I'll have to use P4. Thanks!
I'm using a 1050 Ti, any recommendations? But definitely will try the settings!
what settings would you recommend for recording videos opposed to just streaming? specs: r5 5600x, rtx 3060, 16gb ram.
Excellent work.
Question: Do you need to restart OBS when editing the encoder settings, I.E when swapping from P6 to P7. Or when turning multipass mode on and off.
I only ask because In know you had to restart OBS when swapping between presets for x264 like medium and very fast, learned that the hardway thinking my rig was running medium but something needed to be reloaded in OBS at that time.
You do not have to restart OBS for nvenc presets - but you don’t have to do it for X264 cpu usage presets either. I’ve never had to do that and verified it working plenty of times. You DO have to stop recording/streaming before changing or it won’t actually change, but don’t have to fully restart obs
@@EposVox I appreciate the reply thank you.
I swear I've switched profile between the cpu presets and had no encoding lag until I've restarted OBS and it's like it's not fully engaged the preset until that point, however it's been so long since I was messing around that it's entirely possible I wasn't restarting the stream while switching and trying things on the fly. I even made a post on a forum a long time ago claiming my ryzen 1700 could do medium 1080, I was wrong lol
For recording, how much of a performance impact is there for the presets? Does bitrate give more of a performance hit or the preset? I am getting frame drops while playing Beat Saber while recording which is a big no-no.
Currently using:
NVENC H.265
P5 (Slow) default
Two Pass Off
CQP 20
Lookahead Off
Max B Frames 2
I don't have beat Saber and I'm on a 3060 but using your settings except on P6/P7, when I run Doom Eternal (my main stream game), P6 runs perfectly but P7 causes the game to stutter or freeze every so often, with and without PVT. If I reduce bitrate the performance suffers more. I hope this helps a bit
Great content for video encoding nerds learned so much from this video
Thank for the information
Is the Accsoon SeeMo any good with capturing and Livestreaming on 1080/60p?
On OBS 28.0.3 there's a dedicated field for Max B-Frames that is setted 0 by default. What value should I set on it? I'm using a RX 6600 with the following commands based on your videos:
MaxNumRefFrames=4 BReferenceEnable=1 BPicturesPattern=1 MaxConsecutiveBPictures=1 HighMotionQualityBoostEnable=1
You want to up the MaxConsecutiveBPictures to 2. Maybe 3.
Near the end you say p7 uses a bit of cuda. Is p6 the highest without using cuda, or what settings are? To my knowledge 2Pass qres/look ahead/ psycho visual tuning all use cuda regardless of preset.
So which is the best multipass option for quality increase? Single Pass? or Full Resolution?
Is there a video that would point me to best performance/quality compromise for streaming FPS games with 1440p monitor and RTX3080 on single PC. How should I configure the rescaling for best performance to stream with 960p or 720p, 60 frames/sec. I know you can do the rescaling in output or stream tab in obs studio (v. 29). Or should I have the "Base (canvas) Resolution" already at stream resolution.
I used streamfx p7 on a rtx 2080 and had no problem running it. I was only streaming wow but noticed no gpu load change on gpuz and didn't overload encoder. Maybe Turing is better for it? Also I use minimal sources and overlays, maybe that's it? I will go through my settings and make sure I have it set right so I am not making a liar out of myself.
what about recording. Peopl keep saying either CQP or VBR but which one is better? are CQP files THAT big or only if you use levels of 15 or lower?
Vbr best bitrate setting are?
im running a 2060 super and ryzen 3900x .i only use my pc to stream not game (console - capture card ) still get random skipped frames now and then been tryin to work it out for ages any help @epoz would be great ? danny (stream 936p 7k ) have a really good upload aswell
EposVox with another W Video
Good stuff. Was difficult to find any real info on the different multipass settings.
So what are we doing when it comes to recording and is there an update video for these new settings in v28?
I haven’t updated my OBS since your last video on the update suggested to wait lol. I’m still on 27 and now 28 has a beta for new presets? 😅
I'm able to stream 2K on one of my twitch accounts (my testing account) but when i log into my main account with the same settings, twitch outputs 720p 60 and worse looking quality. do you know why that is?
What do you recommend for recording, since you mostly spoke about streaming? I am trying to record at 1440p. From my personal testing, I can't record above P3. I get the encoding overload message. It doesn't look bad, but I was wondering if there is any enhancements I could do? I have a 3070 with R7 5800x.
@DiizRuptive Because I record videos on my TH-cam channel. And I use shadowplay for clips.
If you play on the same gpu Its normal. I can recording 1440p highest preset with qsync on a dedicated pc, but it hits 50% gpu load. So if you use a dedicated gpu, you can record 1440p and 4k too.
Hi brother I have a internet speed of 40 megabytes per second up load and 150 download megabytes per second speed and I have a RTX 2060 with a ryzen 7 3700x and I stream on TH-cam with this new update my videos look like s*** what bit rate do you recommend with the settings and the hardware that I got in my PC rig
Hey stream professor, wanna say thanks for this video and the settings. A question regarding quality, does this result in NVENC taking the win against Intel 12th and 13th gen QSV? In your prior video on AV1, you included VMAF charts showing that Intel 12th gen QSV beats NVENC for H.264. Just wondering if this holds true or whether NVENC has the crown now.
Quicksync 1.0 beats nvenc 1.0 and x264 most presets too. Xd
So, with a 3700X - GTX 1070 and 32 GB RAM, which best option?
Hi bro I just upgraded from a 2060 to a 4070ti what settings do u recommend I have a ryzen7 3700x and a 4070ti with a upload speed of 40 mbps and download speed of 150 I can't get my stream gameplay to look good or recorded videos to look good
I was curious why not to use p7 as default... and then you answered my question. Makes me wonder how significant is NVENC on gaming as it is right now.
What’s the two passes quarter vs the full one difference?
Curious how this compares to CQP settings for file size and efficiency.
I did some tests with h265 nvenc at cqp of 30. It is very good quality on almost every game i recorded.
Ok idk what i’m doing wrong but i have a 1060 in my streaming pc and wanted to try it out. Have the latest driver but obs keeps saying p6 is not compatible with my graphics card driver. Seeing as you were using a 900 series card i’m a bit confused . Do i need a beta driver for my gpu as well?
Post in the OBS discord
Amazing video, but not sure what is going on with your mic, im using astro a40 and I can hear some weird clipping, buzzing and crackling going on. I thought it was browser initially...
will you also make a video on recordings?
How much more resourse intensive is 2 pass quarter res, compared to single pass ?
Are there any changes for NVIDIA 700 series NVENC such as GTX 760?
great information to startup on settings
but the popping/crackling form the mic seems like the mic is broken
Hey man, I recently got a RTX 3070 and used the settings from your video. P6 with quarter res and my OBS runs on 50% GPU usage, I run OBS as admin and I have hardware accelerated gpu scheduling enabled and my physX is set to CPU. Do you happen to know why this might be a problem? This happens when I stream Apex Legends.
Apex Legends is GPU intensive and for no utter reason its just EA for you. You also wanna turn off gpu scheduling as funnily enough you'll get 5-10 fps back just by doing so.. You also wanna find out if youre in MSI mode for your GPU because if you aint you need to also sort that. As for Physx you want it on auto select.
So this new update for nvenc is now better than Intel quick sync again?
do poeople stream with Ray Tracing on? I have a RTX 3070 with 7k bitrate, P6 slower , tuning high quality, profile high, 2-pass quarter, max-b frames 2, key interval 2, Psycho on. streaming Forza Horizon 5. it loooks like shit. I have my game setting, everything set to low or off and still cant do it. my upload speed is 900mbps+. any ideas or is that game jsut to much to stream?
If I have a 3070 and a 5900x am I better off using Nvenc or h264?
@EposVox Do you take more detailed q&a on Nebula?
Is the latest QSV still king of hardware encoding x264 or does this new NVENC now beat it?
It’s pretty neck in neck at this point
Something knocks out my 980 when I'm using the OBS h264. Doesn't overheat or nothing, but seems it can't record it as I'm getting some weird error. Anyone else has that issue?
That's gonna make the power bill smaller as well. Good job! I wonder if I can record and stream at the same time like this (dual PC setup, so no gaming on the same GPU, an RTX 2060) 🤔 I'll have to download and check.
I do not know what happened because before my OBS said hevc_nvenc and now it says hevc_nvenc (hevc_amf) and if I am correct AMF is like AMD's equivalent to Intel's QuickSync and since that change was done everything I capture with that encoder comes out horribly done. Before it looked correct but now the compression ruins the image adding defects and I wonder why it is hevc_amf when I'm trying to use my GPU which is an RTX 2060.
Post in the discord or forums, you clearly have a bug
I have the same problem. GTX 1080
Have you ever tried the main concept h264 Encoder? It's non-free and they claim its higher quality
Hey man I think there could be something wrong with your mic or mic cables. Your sound has some kind of annoying clipping sound. I’m guessing it could also be the noise gate settings??
Mic sound is a bit clicky like something shorts out or disconnects.
Yeah I was about to say missing the electro voice mic. Evey video I have seen,Epos audio clicks, unimpressed with the new Shiney terminator cock.
Has nothing to do with the specific mic. Analog audio gear doesn't work that way. It also definitely isn't "every video" unless you've only seen the two videos recorded on the same day that had this issue lmao
Sounds more like an Audio Buffer issue. Like too low latency setting causing Buffer underruns.
Where should I be doing the downscaling if I am wanting to output my stream as a 936p resolution but my base canvas is 1080p? I have heard conflicting information where some say you should ALWAYS downscale on the "Video" tab of OBS and then others who say that it should be done in the "Output" tab!
It's kinda confusing on which to use! From your video I'm guessing your recommendation would be to rescale on the Video tab but can anyone here confirm which is the best option? I'm running my output as base canvas of 1920x1080, Output (Scaled) resolution at 1664x936 and using a Bicubic filter for the sharpening. My "Output" settings are CBR, Bitrate @ 6000 kbps, Rescale Output left as "Disabled" and using P6, High Quality tuning, Two Passes (Quarter Resolution), High profile, Keyframes 2s, Look-ahead off, Psycho Visual Tuning on and Max B-frames is 2.
Is this the right way to set this up or am I missing something?
Which stream service you use? If its TH-cam, than upscaling to 1440p is the best.
I love your videos lol
Good video, thx
Imma try single pass on my RTX 3090 to see if it improves... Stream is blurry despite having outstanding internet connection... Ty for the video.
You can encode x264 slower in real time, that's what I currently stream at. Only thing I change in -x264 options is "ref=1 mbtree=0 rc-lookahead=0" and about 30-50% cpu usage goes away; while still visually sharper than 'faster' or 'slow'. I also try to run my bitrate congruent with my res,fps, audio (bit to pixel rule) on select platforms. On twitch, I still keep bitrate pushed around 7300-7600 bitrate throughout my 1080p 60 downscaled to 864p(divisible by 8) 60fps streams; even being a non-affiliate. I've been doing x264 tests the last two years, and have beandog reference pages you've mentioned in other videos that i've used to decide and test these precise scenarios (fast motion looking good). I'm unfortunately on an all-AMD system, but these cpu's do have some power in them! Hope all is well man! The effort you put into these videos is astonishing. Love it!
Is that some new secret sauce?
@@DittyBitty69 you have any better settings?
What do you recommend for recording gameplay? Should i use HEVC? And what bitrate or QP?
30cqp is a very good start. Imagine that for some lol footage it uses 2500bitrate, for dota2 5000bitrate and for cyberpunk abou 7000bitrate. It seems like the way to go for extreme good quality . Hevc nvenc p6
огромная работа, спасибо большое!
can Ampere (got 3080) do AV1 encoding, or do i need A380 on the side like Linus suggested? Also, having A380 on the side would take the load of my 3080 so my gaming fps would be, what, 30% higher?
30-series can only decode AV1
your fps wont be much higher maybe like 2-3 % , nvenc uses an extra chip. i will wait until amd cards come out and new drivers etc. and then maybe in 6 month buy a new card. also got ampere.
Hi ,im playing from 1440p pc to cap card sending 1080p from extended monitor settings
Canvas and output is 1080p but rescalsed output is checked at 936.
Is it the best methot? I use x264 slow on 2nd pc but it looks a bit blurry
Use h264 if you can do, and upscale tó 1440p minimum.
You had some mic popping in this video. Other than that great as always. Thank you for your hard work
Can you qualify what should we use ( single pass or two passes ) for twitch gaming streams ?
Two-pass quarter res based on the data
Single pass based on my pixel peeping
Which tells me it probably doesn’t matter. I’d probably try the quarter res two pass to start and only drop if it’s too intense to run
Would the same apply to TH-cam streaming?
Depending these new built in nvenc encoders. Is streamfx nvenc encoder still worth it or even superior? Or will the built in nvenc encoders be superior in terms of picture quality? Thanks
StreamFX ain’t worth even looking at
Thanks for one more in depth review with loads of graphs about our good old 264. But I gotta add that when I watch it in a 4k oled tv x264 medium is clearly better.
Maybe the other metrics will correlate better to perceived quality.
Graph data don't take into account perceived quality, x264 is winning still.
@@yzuniga13sa Yes, you can see how background objects look much better at 09:55.
@@MrVaultBoy87 eposvox is infatuated with nvenc yet he never streams any fast pace games using his own settings on his twitch channel. This P7 or whatever is called can't compete with x264, but because some test says so he ignores perceived quality even if multiple people on the comments tell him that P7 is terrible for the content they stream which is fast pace fps games like warzone. Nvenc is a disaster for encoding fast pace games with lots of complex shapes.
Do you recommend 2 pc streaming setup?
Yes
At 10:22 i still think that x264 medium looks better than your config, even if the video quality analysis tool begs to differ. Which is not to say that it's not worth it, any bit of visual improvements over default is always nice. But if this video shows me anything, it's that 6mbps simply isn't enough for a very clean 1080p60 and likely never will with h.264. I would bet that just stepping down to 900p would make a world of difference for image quality. I really can't wait for AV1 to take over and solve the quality problem once and for all!
Exactly, background and grow foundation text looks so much better whenever you pause the video. Benchmark score is irrevelant when you can see the difference with your eyes which says the otherwise.
@@MrVaultBoy87fully agreed. Though i don't think the benchmarks are wrong per se, since the scores are all kind of in the same ball park, and visually the clips are all very comparable with only minor differences once you start pixel peeping.
The benchmark tools he uses measure psnr which one can consider a quality test, but it doesn't measure the visual perception. People rather see sharp detail instead of smooth blurred images with little noise. Nvenc blurs out background way too much and in fast pace games the image becomes out of focus and a complete disaster. X264 does a much better job at encoding detail and fast movement.
can you please make an update video for new 40 series users with info on how to set up the av1 streams from scratch now that 29.1 is released ?
Twitch doesn't support it and you also need user devices to be able to decompress it. It's gonna be a while...
is there any way to utilise this for recording?
Epox.. I'm still using the 3900x secret sauce, I've got a 3080.. does this make it redundant?
Do we have any info on how long the timewindow is for 2-pass? Having a very short timewindow would explain the lack of meaningful difference between single/2-pass.
It’s per frame afaik
@@EposVox Well, AFAIK the primary purpose of 2-pass is better bitrate allocation over time. I am not sure if that would make a meaningful improvement without having your 1st pass running ahead of the 2nd pass by at least a few frames, ideally at least an entire GOP length or multiple GOP lengths. IIRC even CBR is really only CBR on the output of the encoder, but internally it is a special case of constrained VBR that gets padded to make it CBR. The only way I can see 2-pass being beneficial, is by improving the encoders ability to avoid wasting as many bits on padding.