AV1

AV1 编码非常非常慢 macOS Intel i7-8750H (12) @ 2.20GHz fps=1

• Encode/AV1
• libaom
  • Constant quality
  • Constrained quality
  • 2-pass average bitrate
  • 1-pass average bitrate
• libsvtav1 - Intel x86-64 codec for AV1
  • Scalable Video Technology for AV1
  • 会比 libaom 快
• librav1e - Xiph encoder for AV1
• Decoding
  • 2022+ 的设备基本都没问题了
• 参考
  • https://jellywatch.app/blog/av1-codec-jellyfin-future-streaming-encode-decode-2026

Hardware	AV1 Encoding
Apple M3+	VideoToolbox
Intel Arc A-series	quality debated
Intel 12th Gen+ iGPU	Limited
NVIDIA RTX 40-series	NVENC AV1
AMD RX 7000-series	AMF AV1

ffmpeg -h encoder=libaom-av1

# Constant quality
# CRF 0–63 - 0 lossless
ffmpeg -i input.mp4 -c:v libaom-av1 -crf 30 -b:v 0 av1_test.mkv

# libsvtav1
ffmpeg -i input.mp4 -c:v libsvtav1 -y test.mp4