When using low-latency mode, it eliminates frame reordering
and follows a one-in-one-out encoding mode
Signed-off-by: xufuji456 <839789...@qq.com>
---
libavcodec/videotoolboxenc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index c6f22723d6..ae1ef32b2d 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -1441,6 +1441,17 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
}
}
+ // low-latency mode: eliminate frame reordering, follow a one-in-one-out
encoding mode
+ if ((avctx->flags & AV_CODEC_FLAG_LOW_DELAY) && avctx->codec_id ==
AV_CODEC_ID_H264) {
+ status = VTSessionSetProperty(vtctx->session,
+
kVTVideoEncoderSpecification_EnableLowLatencyRateControl,
+ kCFBooleanTrue);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting low latency property:
%d\n", status);
+ }
+ }
+
status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
if (status) {
av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n",
status);
--
2.32.0 (Apple Git-132)
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
