From c8691285cc494e663820ccf1474c749177ee108e Mon Sep 17 00:00:00 2001 From: Kieran O'Leary Date: Wed, 12 Jul 2017 22:56:07 +0100 Subject: [PATCH] convert colourspace - fix ffmpeg link --- index.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/index.html b/index.html index 44b02a2..94e4dd4 100644 --- a/index.html +++ b/index.html @@ -576,7 +576,7 @@

Using this command it is possible to add Rec.709 tags to a file that is actually Rec.601 (etc), so apply with caution!

These commands are relevant for H.264 and H.265 videos, encoded with libx264 and libx265 respectively.

Note: If you wish to embed colourspace metadata without changing to another colourspace, omit -vf colormatrix=src:dst. However, since it is libx264/libx265 that writes the metadata, it’s not possible to add these tags without reencoding the video stream.

-

For all possible values for -color_primaries, -color_trc, and -colorspace, see the ffmpeg documentation on codec options.

+

For all possible values for -color_primaries, -color_trc, and -colorspace, see the ffmpeg documentation on codec options.


1. Out of step with the regular pattern, -color_trc doesn’t accept bt470bg; it is instead here referred to directly as gamma.
In the Rec.601 standard, 525-line/NTSC and 625-line/PAL video have assumed gammas of 2.2 and 2.8 respectively.