From: xufuji456 <839789740@qq.com>
To: ffmpeg-devel@ffmpeg.org
Cc: xufuji456 <839789740@qq.com>
Subject: [FFmpeg-devel] [PATCH] avcodec/videotoolboxenc: add low-latency encoding
Date: Thu, 18 May 2023 18:15:35 +0800
Message-ID: <tencent_82D472A0D076F6490C36630EB84136429E06@qq.com> (raw)
Signed-off-by: xufuji456 <839789740@qq.com>
---
libavcodec/videotoolboxenc.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index c6f22723d6..88334f1851 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -251,6 +251,8 @@ typedef struct VTEncContext {
/* can't be bool type since AVOption will access it as int */
int a53_cc;
+
+ int low_latency;
} VTEncContext;
static int vtenc_populate_extradata(AVCodecContext *avctx,
@@ -1441,6 +1443,16 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
}
}
+ if (vtctx->low_latency) {
+ 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)
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next reply other threads:[~2023-05-18 10:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 10:15 xufuji456 [this message]
2023-05-18 11:36 ` James Almer
2023-05-19 1:57 ` =?gb18030?B?0Oy4o8Kh?=
2023-05-19 3:17 xufuji456
2023-05-19 3:34 ` "zhilizhao(赵志立)"
2023-05-19 5:55 ` [FFmpeg-devel] =?gb18030?b?u9i4tKO6ICBbUEFUQ0hdIGF2Y29kZWMvdmlk?= =?gb18030?q?eotoolboxenc=3A_add_low-latency_encoding?= =?gb18030?B?0Oy4o8Kh?=
2023-05-19 13:36 ` [FFmpeg-devel] 回复： [PATCH] avcodec/videotoolboxenc: add low-latency encoding Rick Kern
2023-05-19 18:05 ` Zhao Zhili
2023-05-20 15:00 ` Rick Kern
2023-05-20 16:54 ` Zhao Zhili
2023-05-19 6:05 [FFmpeg-devel] " xufuji456
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