Currently qsv (m)jpeg encoding is broken.
Regression introducing by the commit(id: c1bcd3): fix async support,
which requires the minimum async_depth to be 1, instead previous zero.
But the default async_depth of qsv (m)jpeg encoding is still initialized
(mostly) as zero.
This patch also abviously improves qsv (m)jpeg encoding performance
due to the default async_depth is changed to 4.
Signed-off-by: Zhong Li <zhong...@intel.com>
---
libavcodec/qsvenc_jpeg.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/qsvenc_jpeg.c b/libavcodec/qsvenc_jpeg.c
index c18fe91..01c10125 100644
--- a/libavcodec/qsvenc_jpeg.c
+++ b/libavcodec/qsvenc_jpeg.c
@@ -64,6 +64,7 @@ static av_cold int qsv_enc_close(AVCodecContext *avctx)
#define OFFSET(x) offsetof(QSVMJPEGEncContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
+ { "async_depth", "Maximum processing parallelism",
OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 1,
INT_MAX, VE },
{ NULL },
};
--
2.7.4
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