Changes between Version 51 and Version 52 of Encode/AV1


Ignore:
Timestamp:
Mar 6, 2024, 6:30:00 AM (2 years ago)
Author:
veikk0
Comment:

Reverted to version 48 to remove strange claims and misinformation.

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  • Encode/AV1

    v51 v52  
    151151Note that the `-crf` option is only supported in FFmpeg git builds since 2022-02-24. In versions prior to this, the CRF value is set with `-qp`.
    152152
    153 The valid CRF value range is 0-63, with the default being 30. Lower values correspond to higher quality and greater file size. Lossless encoding is currently [https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/1636 not supported.]
    154 
    155 CRF of 38 is usually enough for a VMAF of at least 95% and a good enough PSNR for source files of 4k-8k resolution. [https://ottverse.com/analysis-of-svt-av1-presets-and-crf-values/ for more information]
    156 
    157 For source files of 1080p and 720p av1 otimization is not optimal, most of the time is better to go with the H265 for better vmaf/size ratio.
    158 
    159 To check vmaf, ssim, psnr check [https://github.com/fifonik/FFMetrics ffmetrics].
     153The valid CRF value range is 0-63, with the default being 50. Lower values correspond to higher quality and greater file size. Lossless encoding is currently [https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/1636 not supported.]
    160154
    161155== Presets and tunes ==