YouTube-optimized 4K upload. AV1 for maximum compression at ultra-high resolution, CRF 30 (AV1 scale differs from H.26x), Opus audio for WebM container. Preset 6 balances encode speed vs quality for creator workflows.
| Video Codec | AV1 |
| CRF | 30 |
| Resolution | 2160p |
| Audio | Opus |
| Container | WebM |
| Preset | 6 |
ffmpeg -i input.mov -c:v libsvtav1 -crf 30 -preset 6 -c:a libopus -b:a 128k output.webmAV1 CRF values are not comparable to H.264/H.265. CRF 30 in AV1 produces roughly similar quality to CRF 23 in H.265, but with 30-50% smaller file sizes at the cost of much longer encode times.
A new FFmpeg encoding puzzle every day. Six tries, in the browser or from your terminal.