Use CFDictionarySetValue to enable low-latency encoding mode.
Since the key is a type of "EncoderSpecification", instead of
"CompressionProperty".
Signed-off-by: xufuji456 <839789...@qq.com>
---
libavcodec/videotoolboxenc.c | 18 +++++++-----------
1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index a313087876..6114351392 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -1536,17 +1536,6 @@ 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,
-
compat_keys.kVTVideoEncoderSpecification_EnableLowLatencyRateControl,
- kCFBooleanTrue);
-
- if (status) {
- av_log(avctx, AV_LOG_ERROR, "Error setting low latency property:
%d\n", status);
- }
- }
-
if ((avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) != 0) {
set_encoder_property_or_log(avctx,
compat_keys.kVTCompressionPropertyKey_AllowOpenGOP,
@@ -1690,6 +1679,13 @@ static int vtenc_configure_encoder(AVCodecContext *avctx)
}
#endif
+ // 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) {
+ CFDictionarySetValue(enc_info,
+
compat_keys.kVTVideoEncoderSpecification_EnableLowLatencyRateControl,
+ kCFBooleanTrue);
+ }
+
if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
if (status)
--
2.32.0 (Apple Git-132)
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