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CODECAPI_AVLowLatencyMode property

Enables low-latency mode in a codec.

Data type


Property GUID


Property value

If the value is nonzero, low-latency mode is enabled. If the value is zero, low-latency mode is disabled.


This property applies to both encoders and decoders.

Low-latency mode is useful for real-time communications or live capture, when latency should be minimized. However, low-latency mode might also reduce the decoding or encoding quality.

The encoder is expected to not add any sample delay due to frame reordering in encoding process, and one input sample shall produce one output sample. B slices/frames can be present as long as they do not introduce any frame re-ordering in the encoder.


Minimum supported client

Windows 8 [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2012 [desktop apps | Windows Store apps]



See also

Media Foundation Properties



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