What is CRF OBS?
Abigail Rogers
Updated on May 29, 2026
Quality Balance
When using variable bitrate, this controls the CRF (constant rate factor) parameter in x264 (10 is CRF 22, 0 is CRF 32). This is only used with variable bitrate, and determines how the video encoder should spend bits for quality. This value is not used and disabled if using CBR (constant bitrate).
Correspondingly, what does CRF stand for on OBS?
The Constant Rate Factor (CRF) is the default quality (and rate control) setting for the x264 and x265 encoders, and it's also available for libvpx. With x264 and x265, you can set the values between 0 and 51, where lower values would result in better quality, at the expense of higher file sizes.
Subsequently, question is, what is quality CRF? Constant rate factor (CRF) is an encoding mode that adjusts the file data rate up or down to achieve a selected quality level rather than a specific data rate. CRF values range from 0 to 51, with lower numbers delivering higher quality scores.
Then, what is CBR OBS?
With CBR, the bit rate is going to be constant regardless of content. VBR allows for fewer/more bits to be used when necessary and CQP allows for constant quality (something like that). CBR is good for streaming but that's about it.
What is CPU usage preset OBS?
The usage preset refers to how fast the CPU encodes video. The faster it encodes, the less CPU it uses. By default, this is set to “Very Fast”, which provides the best balance between performance and quality.
Related Question Answers
Is Cqp better than CBR?
If you're streaming, use CBR as every platform recommends it and it's a reliable form of Rate Control. If you're recording and need to be high quality, use CQP if the file size is no issue, or VBR if you want to keep file size more reasonable.Is x264 better than Nvenc?
But there is a slight trade-off in quality, and the reality is that x264 looks better than both NVENC and AMF when given enough power to do its job. When selecting a x264 you can then adjust the CPU Usage Preset from ultrafast all the way down to slow and placebo.What bitrate is 1080p 60fps?
between 4500 and 6000 kbpsWhat is the best encoder for OBS?
x264What is CRF mean?
CRF| Acronym | Definition |
|---|---|
| CRF | Clinical Risk Factor |
| CRF | Controlled Release Formulation |
| CRF | Cross Reference |
| CRF | Connection Related Function |
Can OBS record lossless?
To get both audio and video lossless, set simple output mode, then Settings->Output->Recording->Recording quality->Lossless Quality, tremendously large file size.What is a good bitrate for OBS?
Output Settings Tab| Video Bitrate | Audio Bitrate | |
|---|---|---|
| 1080P | 6,000Kbps | 128Kbps |
| 720P | 3,000Kbps | 128Kbps |
| 480P | 1,000Kbps | 128Kbps |
| 360P | 600Kbps | 96Kbps |
What is a good bitrate for 1080P?
Recommended video bitrates for HDR uploads| Type | Video Bitrate, Standard Frame Rate (24, 25, 30) | Video Bitrate, High Frame Rate (48, 50, 60) |
|---|---|---|
| 2160p (4K) | 44–56 Mbps | 66–85 Mbps |
| 1440p (2K) | 20 Mbps | 30 Mbps |
| 1080p | 10 Mbps | 15 Mbps |
| 720p | 6.5 Mbps | 9.5 Mbps |
What is the best downscale filter for OBS?
Normally bicubic is recommended. It's a standard rescale and provides good quality.Where is bitrate in OBS?
In the Settings window, head to the Output tab, and here is where you should see similar settings to that of OBS, but in a less compressed layout. The bitrate will also be set to 2500 Kbps by default, though it only shows the bitrate number, not the 'Kbps' format.What is CBR rate control?
CBR stands for constant bitrate, a control technique which keeps the bitrate constant, but allows video quality to vary. MBR stands for maximum bitrate, a control technique which allows the bit rate to vary, but only up to a maximum value.What does rate control on OBS mean?
CQP specifies a quality level, regardless of how much (or how little) data needs to be captured to achieve that quality level. Streaming sites want non-variable bitrates, but when you're recording it doesn't matter as much.What is rescale output OBS?
OBS will take your Base (Canvas) Resolution, filter it using your selected Downscale Filter, and then rescale it based on your select Rescale Output setting. If you wish to stream at the same resolution as your Base (Canvas) Resolution, simply uncheck this box.What are B frames in OBS?
B-frames (bi-predictive frames) are like extra Keyframes, but instead of showing up consistently they only show as needed. This is done by looking both at the previous frame, and the upcoming frame, and inserting a new frame as needed.What is Cqp bitrate?
4y. CQP uses an algorithm that analyses each frame and tries to keep the recording at a similar quality. CQP stands for Constant Quantisation Parameter. The downside is that final file size, and thus bitrate, is unknown.What is the difference between x265 and x264?
x265 and x264 are two different video compression standards that are used to compress video in size but still maintain the quality of the video. x264 is an earlier codec and is used in a lot of videos nowdays and x265 is a newer standard.Is CRF 0 lossless?
CRF 17/18 are visually lossless. CRF 0 means, every pixel of the frame will be determined by its own data. CRF 17/18 means, every pixel of the frame will be either determined by its own data or determined from the previous frame if they are identical.Is h265 better than h264?
265 is a video compression standard that was designed for the newest generation of high-resolution video. Compared to H. 264, this newer standard offers from 25% to 50% better data compression at the same level of video quality. 265/HEVC supports resolutions up to 8192×4320, which includes 8K UHD as well.What is 2pass encoding?
Two pass encoding, also known as multi-pass encoding, is a video encoding strategy used to retain the best quality during conversion. In the first pass of two-pass encoding, the input data from the source clip is analyzed and stored in a log file. Two-pass encoding is almost twice slower than one-pass coding.What is CRF Olive?
A unique patented unit in the form of a cylindrical brush, which is directed into the olive tree and orientated between the branches for fruit removal. The OLIVE ONE can be attached on rear 3 point hitch with apposite frame or, if the tractor has the cab, on the front side by rigid frame.What is constant quantizer?
Constant Quantizer/Quality: Encode the file in one pass to a specified quantizer/quality, resulting in a known quality and unknown filesize (as compared to other modes which have known filesize & unknown quality).What does no bitrate mean?
Video bitrate is the amount of video data transferred in a certain period. Without a high bitrate, your high resolution and high frame rate video won't look as good as it could.Is FFmpeg multithreaded?
FFmpeg uses multi-threading by default, so you prob. don't need -threads 0 . If your encode is bottlenecked on a single-threaded filter or decoder, you'll see full load on one core, and light load on many other cores.How do I stop OBS from using so much CPU?
10 Ways to Fix the OBS CPU Usage too High- Downscale your output resolution.
- Use your Graphics Card for Encoding.
- Lower Frame Rate.
- Change your x264 preset.
- Check your sources.
- Close Extra Applications.
- Run all audio sources at the same frequency.
- Free Disk Space.
