diff --git a/patches/FFmpeg/FFmpeg/MF/01-mfenc-lowlatency.patch b/patches/FFmpeg/FFmpeg/MF/01-mfenc-lowlatency.patch index ae31a379d..0e260263f 100644 --- a/patches/FFmpeg/FFmpeg/MF/01-mfenc-lowlatency.patch +++ b/patches/FFmpeg/FFmpeg/MF/01-mfenc-lowlatency.patch @@ -1,64 +1,28 @@ +From 126671e73065e29c9582e47bc74774af2200fc8f Mon Sep 17 00:00:00 2001 From: Cameron Gutman -To: ffmpeg-devel@ffmpeg.org -Date: Sat, 2 Aug 2025 23:55:25 -0500 -Message-ID: <20250803045559.1351-1-aicommander@gmail.com> -X-Mailer: git-send-email 2.50.1.windows.1 -MIME-Version: 1.0 -Subject: [FFmpeg-devel] [PATCH] avcodec/mfenc: add low_latency encoder - parameter -X-BeenThere: ffmpeg-devel@ffmpeg.org -X-Mailman-Version: 2.1.29 -Precedence: list -List-Id: FFmpeg development discussions and patches -List-Unsubscribe: , - -List-Archive: -List-Post: -List-Help: -List-Subscribe: , - -Reply-To: FFmpeg development discussions and patches -Cc: Conn O'Griofa -Errors-To: ffmpeg-devel-bounces@ffmpeg.org -Sender: "ffmpeg-devel" +Date: Sun, 31 Aug 2025 16:05:15 -0500 +Subject: [PATCH] avcodec/mfenc: add AVLowLatencyMode support -Implement support for CODECAPI_AVLowLatencyMode property, which is -useful for live streaming use cases (and cannot be achieved by -selecting any of the low latency "scenario" encoder presets alone). +Set CODECAPI_AVLowLatencyMode when AV_CODEC_FLAG_LOW_DELAY is enabled on +the AVCodecContext. AVLowLatencyMode can acheive lower latency encoding +that may not be accessible using eAVScenarioInfo options alone. -Co-authored-by: Conn O'Griofa Signed-off-by: Cameron Gutman --- - libavcodec/mfenc.c | 5 +++++ - 1 file changed, 5 insertions(+) + libavcodec/mfenc.c | 3 +++ + 1 file changed, 3 insertions(+) diff --git a/libavcodec/mfenc.c b/libavcodec/mfenc.c -index 30531fe3e8..e84ce7bde0 100644 +index 6f79386404502..541f7fb9612af 100644 --- a/libavcodec/mfenc.c +++ b/libavcodec/mfenc.c -@@ -64,6 +64,7 @@ typedef struct MFContext { - int opt_enc_quality; - int opt_enc_scenario; - int opt_enc_hw; -+ int opt_enc_lowlatency; - AVD3D11VADeviceContext* device_hwctx; - } MFContext; - -@@ -866,6 +867,9 @@ static int mf_encv_output_adjust(AVCodecContext *avctx, IMFMediaType *type) - +@@ -876,6 +876,9 @@ static int mf_encv_output_adjust(AVCodecContext *avctx, IMFMediaType *type) + if (c->opt_enc_scenario >= 0) ICodecAPI_SetValue(c->codec_api, &ff_CODECAPI_AVScenarioInfo, FF_VAL_VT_UI4(c->opt_enc_scenario)); + -+ if (c->opt_enc_lowlatency) ++ if (avctx->flags & AV_CODEC_FLAG_LOW_DELAY) + ICodecAPI_SetValue(c->codec_api, &ff_CODECAPI_AVLowLatencyMode, FF_VAL_VT_UI4(1)); } - + return 0; -@@ -1445,6 +1449,7 @@ static const AVOption venc_opts[] = { - - {"quality", "Quality", OFFSET(opt_enc_quality), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 100, VE}, - {"hw_encoding", "Force hardware encoding", OFFSET(opt_enc_hw), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VE}, -+ {"low_latency", "Low latency mode", OFFSET(opt_enc_lowlatency), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VE}, - {NULL} - }; -