aa71eb96d7
Plugins: - misc_fixes v2.8: Pre-processing, container remux, stream conforming - stream_organizer v4.8: English priority, subtitle extraction, SRT conversion - combined_audio_standardizer v1.13: AAC/Opus encoding, downmix creation - av1_svt_converter v2.22: AV1 video encoding via SVT-AV1 Structure: - Local/ - Plugin .js files (mount in Tdarr) - agent_notes/ - Development documentation - Latest-Reports/ - Error logs for analysis
2.5 KiB
2.5 KiB
SVT-AV1 Optimization Guide
Target Goal: "Relatively fast encoding, high visual quality, ignore file size."
Based on analysis of the plugin constraints and current SVT-AV1 (2024/v2.x+) best practices, here is the recommended configuration.
Recommended Settings
| Setting | Recommended Value | Default | Reasoning |
|---|---|---|---|
| Preset | 6 | 10 |
Preset 6 is the modern "sweet spot" for efficiency/speed. It is significantly better quality than 10, and much faster than the slow presets (0-4). If 6 is too slow for your hardware, use 8. |
| CRF | 24 | 29 |
Lower CRF = Higher Quality. CRF 24 is excellent for visual fidelity (often VMAF > 95). Since file size is not a concern, we can drop from the default 29 to ensure no artifacts. |
| Input Depth | 10 | 8 |
Crucial Change. 10-bit encoding prevents color banding and improves visual fidelity with negligible speed penalty on SVT-AV1. Always use this for quality. |
| Tune | 0 | 0 |
Keep at 0 (Visual Quality) to prioritize human perception over metrics. |
| Film Grain | 0 (or 5-10) | 0 |
Keep at 0 for clean sources. If your source is older/grainy, set to 5-10 to synthesize grain instead of struggling to compress it (which looks blocky). |
| AQ Mode | 2 | 2 |
DeltaQ mode is best for perceptual quality. |
| Max Resolution | As Source | none |
Don't downscale unless necessary for compatibility. |
Why these settings?
- Preset 6 vs 10: The default Preset 10 is designed for real-time applications. It sacrifices a lot of efficiency. Preset 6 optimizes block partitioning much better, resulting in a cleaner image at the same bitrate, or simply a better looking output.
- CRF 24 vs 29: Default 29 is a "safe" bet for small files. 24 moves firmly into "High Quality/Archival" territory without being wasteful (like CRF 18 might be).
- 10-bit: Modern encoders handle 10-bit very efficiently. Even if your source is 8-bit, encoding in 10-bit avoids internal rounding errors that cause banding in gradients (sky, dark walls).
Summary for Tdarr Plugin Inputs
crf: 26 (or 24 via manual input if possible, otherwise pick closest lower option like 26)- Note: Plugin dropdown options are: 20, 26, 28... -> Select 26.
preset: 6input_depth: 10fast_decode: 0 (Optional: Turn off fast decode optimization for slightly better compression efficiency, though enable is fine if playback on low-end devices is a concern).