Re: [FFmpeg-devel] [PATCH] lavc: clarify color_range semantics

[Stefano Sabatini <stefasab@gmail.com>]

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On date Monday 2023-01-16 09:46:35 +0530, Gyan Doshi wrote:
> On 2023-01-15 11:11 pm, Stefano Sabatini wrote:
> > Mark this option as encode-only and extend description.
> 
> There are scripts which set this (and other color props) on the input, and
> then those streams can be sent to multiple filters with the props set,
> instead of having to use setparams in each chain.

Good point, amended with this considerations in mind.

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From bcddce6d1ea802638770dcfd8e7ecb6d798f63c6 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefasab@gmail.com>
Date: Sun, 15 Jan 2023 18:16:45 +0100
Subject: [PATCH] lavc: clarify color_range semantics

Extend description for decoding and encoding use cases.

Address issue: http://trac.ffmpeg.org/ticket/443
---
 libavcodec/avcodec.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 0ac581d660..85bb95144d 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -976,8 +976,11 @@ typedef struct AVCodecContext {
 
     /**
      * MPEG vs JPEG YUV range.
-     * - encoding: Set by user
-     * - decoding: Set by libavcodec
+     * - encoding: Set by user to override the default output color range value,
+     *   If not specified, libavcodec sets the color range depending on the
+     *   output format.
+     * - decoding: Set by libavcodec, can be set by the user to propagate the
+     *   color range to components reading from the decoder context.
      */
     enum AVColorRange color_range;
 
-- 
2.25.1


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