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).
Co-authored-by: Conn O'Griofa <connogri...@gmail.com>
Signed-off-by: Cameron Gutman <aicomman...@gmail.com>
---
libavcodec/mfenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/mfenc.c b/libavcodec/mfenc.c
index 30531fe3e8..e84ce7bde0 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)
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)
+ 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}
};
--
2.50.1.windows.1
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