[FFmpeg-devel] [PATCH] lavc/vaapi_encode: convert from lambda to qp
Xiang, Haihao
haihao.xiang at intel.com
Thu Mar 28 08:55:57 EET 2024
From: Haihao Xiang <haihao.xiang at intel.com>
When AV_CODEC_FLAG_QSCALE is set, the value of avctx->global_quality is
lambda.
Signed-off-by: Haihao Xiang <haihao.xiang at intel.com>
---
libavcodec/vaapi_encode.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
index 940f0678a5..8b53095d61 100644
--- a/libavcodec/vaapi_encode.c
+++ b/libavcodec/vaapi_encode.c
@@ -1961,7 +1961,10 @@ rc_mode_found:
if (ctx->explicit_qp) {
rc_quality = ctx->explicit_qp;
} else if (avctx->global_quality > 0) {
- rc_quality = avctx->global_quality;
+ if (avctx->flags & AV_CODEC_FLAG_QSCALE)
+ rc_quality = avctx->global_quality / FF_QP2LAMBDA;
+ else
+ rc_quality = avctx->global_quality;
} else {
rc_quality = ctx->codec->default_quality;
av_log(avctx, AV_LOG_WARNING, "No quality level set; "
--
2.34.1
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