* [FFmpeg-devel] [PATCH] lavc/codec_desc: add lossless flags for hevc and av1 (PR #20378)
@ 2025-08-31 11:21 Gyan Doshi via ffmpeg-devel
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From: Gyan Doshi via ffmpeg-devel @ 2025-08-31 11:21 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: Gyan Doshi
PR #20378 opened by Gyan Doshi (GyanD)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20378
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20378.patch
Both codecs support a lossless mode akin to H.264/AVC
>From f317b6c052f1108fcf2ce07b28efa2484c21cabe Mon Sep 17 00:00:00 2001
From: Gyan Doshi <ffmpeg@gyani.pro>
Date: Sun, 31 Aug 2025 16:48:03 +0530
Subject: [PATCH] lavc/codec_desc: add lossless flags for hevc and av1
Both codecs support a lossless mode akin to H.264/AVC
---
libavcodec/codec_desc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index a065556e51..d5d178cc7e 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -1277,7 +1277,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
.type = AVMEDIA_TYPE_VIDEO,
.name = "hevc",
.long_name = NULL_IF_CONFIG_SMALL("H.265 / HEVC (High Efficiency Video Coding)"),
- .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER,
+ .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_LOSSLESS | AV_CODEC_PROP_REORDER,
.profiles = NULL_IF_CONFIG_SMALL(ff_hevc_profiles),
},
{
@@ -1648,7 +1648,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
.type = AVMEDIA_TYPE_VIDEO,
.name = "av1",
.long_name = NULL_IF_CONFIG_SMALL("Alliance for Open Media AV1"),
- .props = AV_CODEC_PROP_LOSSY,
+ .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_LOSSLESS,
.profiles = NULL_IF_CONFIG_SMALL(ff_av1_profiles),
},
{
--
2.49.1
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2025-08-31 11:21 [FFmpeg-devel] [PATCH] lavc/codec_desc: add lossless flags for hevc and av1 (PR #20378) Gyan Doshi via ffmpeg-devel
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