Changes between Version 28 and Version 29 of Encode/AV1

Timestamp:

Aug 11, 2021, 12:45:38 PM (5 years ago)

Author:

veikk0

Comment:

On high bit-depth, fix typo

Encode/AV1

@@ -98 +98 @@
 For intra-only output, use `-g 0`.
 
-== HDR ==
+== HDR and high bit depth==
 
 When encoding in HDR it's necessary to pass through color information; `-colorspace`, `-color_trc` and `-color_primaries`. For example, Youtube HDR uses
@@ -106 +106 @@
 }}}
 
+AV1 includes 10-bit support in its Main profile. Thus content can be encoded in 10-bit without having to worry about incompatible hardware decoders.
+
+To utilize 10-bit in the Main profile, use `-pix_fmt yuv420p10le`. For 10-bit with 4:4:4 chroma subsampling (requires the High profile), use `-pix_fmt yuv444p10le`. 12-bit is also supported, but requires the Professional profile. See `ffmpeg -help encoder=libaom-av1` for the supported pixel formats.
+
 == Lossless encoding ==
 
-Use `-crf 0` for lossless encoding. Because of a bug the first frame will not be losslessly preserved (was fixed in 288ca1c66740640d5742f2921efbf502d83f8b6a). You may use `-aom-params lossless=1`, which is truly lossless.
+Use `-crf 0` for lossless encoding. Because of a bug present in FFmpeg versions prior to 4.4, the first frame will not be losslessly preserved (the issue was fixed on [http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=288ca1c66740640d5742f2921efbf502d83f8b6a March 21, 2021]). As a workaround on pre-4.4 versions one may use `-aom-params lossless=1` for lossless output.
 
 = SVT-AV1 =