CBR vs CQP vs VBR, which Rate Control to use for Video Editing and OBS
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- Опубликовано: 20 янв 2023
- The rate controls can be confusing. However, if you are currently using CQP or VBR and are experiencing lag when video editing, you might wanna switch to CBR. This is what we experiment with in this video.
For this I recorded 1440p 60fps (HEVC) at
20,000 kbps CBR
24 CQP
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I appreciate how comprehensive you are about the topics discussed on your videos. I've clicked around far more popular videos of this same topic for awhile which left me with nothing but black boxes which didn't completely answer the questions I had, it's like getting DIY furniture without the tools or screws included. I have subscribed and will remain your loyal consumer for the foreseeable future.
finally a proper video that goes into the detail yet keeping it simple for us..subbed and liked!
The test was awesome, love doing and seeing stuff like that, this just confirmed me sticking with CBR. Also- for anyone who uses Handbrake post-recording or works with ".m4v" and has this lag issue Vex tested for, I highly recommend just changing the file extension to ".mp4" and it will mostly solve the problem of lag with seeking a frame or on playback in the editing workflow - the file containers are so similar and use the same wrapper, so this change can be made without corruption, but make a backup first just to be sure, I do just out of paranoia lol - But that's a great way to mitigate what was a huge issue for me for a long time. It can take a minute to do this for a lot of files, but it's definitely worth it in my experience! Or you could just use a remux encoder like ffmpeg to mass change them, that'd work too and prevent you having to copy and paste ".mp4" over and over lol
was a nice surprise to see you test this in resolve as its literally the reason i was looking this up. ive been recording with cqp at a level of 14 and am constantly needing to create proxy media and half the time it just refuses to generate the proxy. makes the editing process a huge chore and take way longer than it should. definitely gonna try out cbr because of this. Also the test you did was perfect. having quick jumpcuts and showing the lag and stutter between them, its the exact problem i have if i dont generate proxies. thanks for the video and attention to detail
Yeah it def wasn’t a perfect test, but I’m glad it helped. It’d prolly still be a good bit better with resolve studio for hardware acceleration. Generating proxies is a huge pain, especially with huge clips. So rather just record in a format u can actually edit in
@@vextakes it was a good test to demonstrate one of the downsides, especially for something like quick cuts like that, that you use to do zoom ins and things like that, its important to time them how you want without it skipping frames. Also yeah i'm sick of proxies now, will be such a huge time saver if i'm able to edit cbr footage straight from the source rather than have to wait hours just to be able to edit my footage smoothly. my cpu will probably be thankful too
Fr hope it works out for u dude
use cqp 24
Super interesting test. Thanks for making this video showing the comparison
Fantastic video man. Thank you so much
Excellent video, you're really good at presenting information! :)
damn, thanks for this video, this is a really good information
It was very helpful, thank you!
That's a bit pointless test, as you were testing a file that was RENDERED BY DAVINCHIE and not actually re-recording another take with OBS. Resolve and OBS may be transcoding files completely differently, even tho they both would be defined as "constant bitrate" files
this is exactly what I was looking for, I noticed my files were huge and the editing was laggy whenever I was using obs. I was using CQP. not anymore
Where did you get:
Constant quality profile
Everywhere I looked says:
Constant Quantization Parameter.
Umm Curious🤔
Video was good... That outro was banging...
What are your recommendations for Optimal settings for someone who wants to upload 1440p 60fps with it looking as good as possible but not taking up a ridiculous amount of space?
Also I have davinci studio and editing isnt that great even on that with CQP. you have to make proxies and setup the render cache and lower the timeline while editing. Does CBR put less strain on your system? Should i use nvidia H.264 or Nvidia Hevc? if I use CBR what Bitrate would be nice esp if im going to upscale to 4k
this is pretty interesting! Do you know what it is like on Premiere?
Have no clue. Typically I’ve heard première I’d less optimized, but I’m not 100% sure
thanks for the interesting information
Np glad I could help. I made a follow that focuses on codecs if it would also help ruclips.net/video/TBdRHPhZ6bc/видео.html
I'm using Radeon 7800XT GPU and for recording I have a bit more options for Rate Control: QVBR and HQVBR. I can actually use QVBR and it keeps the quality more at a lower bitrate than VBR, it has a value similar to CQP however in QVBR the lower the number of the value the worse the quality. Now with HQVBR it can keep the quality even better ... however my recordings are really really stuttery, would love to see if you test those Rate Controls.
I have always recorded in CQP and in Davinci Resolve and I was having the same problem: non smooth timeline, I was having this problem with my old rx 5700xt (which I sold 1 month ago) and with my rx 3070 that I have now and the strange thing was that even if I told (from the settings) to the software that it had to use the CUDA of the gpu for editing, with the graphic specs on the screen, I noticed that the GPU wasn't being utilized, so I looked for the solution and it is more stupid than I imagined: with davinci resolve opened you have to go to the task manager and set the priority to high, in this way the gpu will work and I noticed it immediately, time line without stuttering and as soon as I moved it the use of the gpu went up.
Although i don't trim videos but thanks for sharing .
thank you for the video)
For me speed dont matter quality is
So how cbr and cqp compares in quality
At 100mbps bit rate
Great video, buddy.
I used to have CBR at around 70 000 if i remember right with x264 two years ago when i was recording game footage. But it's been a while since i've recorded anything. And just now after i upgraded my PC from a 1st Gen Ryzen 7 1700 to a Ryzen 9 7950X and 64GB DDR5 RAM 2x32 G.SKILL Trident Z5 Neo non RGB AMD EXPO OC profile 6000MHz CL32-38-38-96 1.40v with an RTX 3070 which i had prior to the upgrade. I got some motivation to try and record again with the new PC parts. And i think i'll try NVENC this time around, but again, with CBR set to around 70 000 to 100 000 in OBS depending on the file size. I like to tinker OBS, and i'm glad a free program like it exists compared to all other paid ones that aren't even as good as OBS. OBS is a godsent. I wonder how my PC will perform in DaVinci Resolve as well with the 7950X. But first, i'll try out OBS.
Thanks homie
Uh ur new build will be fine in resolve and obs. I’d def use nvenc, it’s so much more efficient. Unless u wanna record av1 on ur cpu or something. I wouldn’t get too caught up with the super high bitrates. Honestly if ur just recording gameplay, most of the stuff that does well on RUclips is only 6000 kbps at 1080p cos it’s from streams. I use HEVC on my gpu and it looks pretty indistinguishable from raw footage at 20,000 kbps (1440p 60). But I recently dropped it down to 15,000 cos it still looks really good and I just recorded 2hr40m of footage which was less than 15gb. Also runs super smooth in resolve. The key is to stop using anything h.264 related when recording locally, there’s no point. I did another video comparing 264, 265 and av1, at all bitrates, 264 looked only looked half as good as the others
There’s nothing stopping u from recording and gettin some stuff out there just do it
@Vex Thank you for the encouragement.
I've always really liked to record and edit videos.
I see it as an " artistic " type of work. But i have a lot more to learn about video production as a hobbyist. I'm also glad that DaVinci Resolve is a free program just like OBS. These two are phenomenal programs for being free. With all the in-depth functionality they both offer. I'm psyched about this again lol but that's a good feeling, lol 😆
@@vextakes what bitrate for 4K 60fps? And did you use for 1440p, CBR for that?
@@TheRealOAFs hey there - if you actually want to have decent file sizes and still get good quality without fiddling with massive numbers, just use CQP at anywhere from 17-20 (lower number = higher quality)
edit: if you can, record in H265/HEVC as its 2x as efficient with bitrate, resulting in 50% smaller file sizes
for recording gaming vidoes what is the best settings? CBR or cqb also what is a good bit rate? i have been using around 80,000 on cbr
If u want perfect recordings use lossless. But the files are enormous. 80,000 is already really big. Check the desc for what I normally record at
@@vextakes Hi, lossless for my setup is 6gb+ for 1 minute gameplay video 2k60fps. Hell no.
so now CQP 25 VS. CBR 160mbps(yes i put it big becoz i prefer quality) in terms of recording gameplay video(like walkthrough video) with minimized edit. which one is better for better quality in 2k60fps?
@@Mydude5196 I use CQP 23 4k 60fps with nvenc preset 6 two passes 1/4 res profile main with look ahead + psycho visual tuning and 2 b frames on a gtx 1080 TI works realy well for beat saber.
a 3minute video is 458 megabytes so I think that is around 20MBS
for a game like cs-go I use CQP 24 and preset 5 nvenc which is a bit lighter and preset 6 drops frames in this case.
CQP is great if you are like me and only cut off the start and end,s of videos with handbrake but if you want to edit constant bit rate is good.
Nivida shadow play high quality is 60MBs and it uses the medium preset 4 I think as it seems dosent but not as efficient as 6
I use 120000
Ty bro
I have CQP CQ lvl on 17 and 30 seconds fullHD 60fps in 410mb and one 7min 432mb ): is that normal?
thank you
when i record and watch it after, the quality is great but when i put that recording into davinci, the playback is turns blurry and it ends up being blurry after the export. I set the timeline and playback to the exact resolution to the recording but ended ruining it and making it blurry. anyone know about this?
what recording settings do u use- encoder, rate control, bitrate, res, fps? Little side thing, if ur in 1440p in resolve you have to set a custom resolution, it will default footage to 1080p. So u set up a custom timeline, instead of allowing resolve to automatically set the res and fps
@@vextakes I record in 1080p and put it on resolve. i change the timeline settings to 1080p but still blurry. I heard though it might have something to do with proxy settings in resolve...
what bit rate do u record at? Also you have to make proxies and render them separately, so it most likely is not that. Is your timeline playback running at a lower resolution? Like quarter or half? Also still need to know what bitrate u render ur videos out at
0:32 "Most streamers use CBR" - And then rest of video you talk about recording/editing.
So any chanse you make a video and go over the different settings on what their strenghts/weaknesses are for streaming?
( ps. OBS had a update recetly and the settings are not identical to what they are in your video. )
Thanks👍👍👍
How did you import mkv obs recordings into davinci resolve?
theres a setting to remux mkv to mp4, which you can use to edit
@@emperor8716 thank you, I then found out that I can just drag and drop the files, not sure why I thought resolve didn't support mkv
@@Xperto_ about a year or 2 it didnt support mkv. I use remux my videos. God send when they added mkv support
One is an MOV and the other is an MP4. That might have made a difference.
The .mov and .mp4 are just containers(hold the audio/video/subtitle stream), not the actual codec(h264/h265/av1).
thanks alot im using cbr 90000 bits i dont no if thats good or bad
thank you, video was running like shit now i understand why lol
i dont even have cqp for a option
I was recording a gameplay video after messing around with the settings and accidentally recorded an hour and a half with lossless😬. Lets just say my computer is full
Damn hopefully your pc is ok now
same here 4k60 lossless but with av1 well 1 hour of gameplay video was 14gb size
yep
CBR is also not 'fully' CBR in recording with OBS. Bitrate Viewer showed me, at CBR 12 Mbps, pikes of 20 and lows of 4 in some parts.
Note. Bitrate Viewer only accepts .mp4
yeah ive noticed that. if i record cbr on a static image the filesize will be smaller, but when I record gameplay files are noticeably larger. I think it has something to do with OBS (ffmpeg) algorithm and the encoding speed/quality that you use for optimization
@@vextakes I have question which is better quality for movies CBR or ABR? I been search all over the internet about this topic can't seem to find any info about it.
Hi do you know the difference between CBR & HQCBR
Where r u finding HQCBR? Cos that’s not in obs or anything I’ve seen before
@@vextakes at my OBS under Rate control.
Mine has CBR,CQP,VBR,VBR_LAT,QVBR,HQVBR,HQCBR .. I wonder if HQCBR was better than CBR . I can't even find info bout HQCBR
Ik it only shows rate control that u have access to. Also is that on the advanced settings in obs? (Top tab). Cos they simplify things when not on advanced. It might be talking abt using a quality speed vs a fast speed, which u would adjust in advanced separately
Yes on the advance setting. Im using amd card maybe obs put hqcbr for amd cards . Hope amd encoder will improve more . Anyway great video, thank for replies .
Np idk how it would change anything tho
What is lossless
dont worry about it just like he said. long story short it's unrealistically demanding and even with a 4090 your recordings will be be 1FPS. (my experience)
thank you