High Quality Recordings with x264 (in OBS® Studio)
The x264 encoder supports both 4:4:4 as well as 4:2:0, as long as the underlying hardware is fast enough to handle it. It also has two different ways to reach each quality level: Constant Quantization Parameter (CQP) and Constant Rate Factor (CRF). Unfortunately OBS Studio only offers the latter, so for now we are stuck with that. With a single-PC setup, 4:4:4 recording using CRF will be very expensive. You might have to lower the preset used in order to maintain reasonable performance in game and encodes.
| Option | Lossless | Near Lossless | Indistinguishable | High Quality | Acceptable Quality |
|---|---|---|---|---|---|
| Rate Control | CRF | ||||
| CRF | 0 | 0 | 8 | 16 | 21 |
| Keyframe Interval | 1 | ||||
| Preset | ultrafast - placebo (Slower presets may end up smaller, but take significantly more CPU) | ||||
| Profile | None | None or high | |||
| Tune | None | Any (Ensure that your tune matches up with your target content, or leave at None) | |||
| x264 Options | bframes=0 keyint=1 min-keyint=1 |
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