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eAVDecAudioDualMono enumeration (codecapi.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Specifies whether the input audio stream is stereo or dual mono. This enumeration is used with the AVDecAudioDualMono property.

Syntax

typedef enum eAVDecAudioDualMono {
  eAVDecAudioDualMono_IsNotDualMono = 0,
  eAVDecAudioDualMono_IsDualMono = 1,
  eAVDecAudioDualMono_UnSpecified = 2
} ;

Constants

 
eAVDecAudioDualMono_IsNotDualMono
Value: 0
The input bit stream is not dual mono.
eAVDecAudioDualMono_IsDualMono
Value: 1
The input bit stream is dual mono.
eAVDecAudioDualMono_UnSpecified
Value: 2
There is no indication in the bit stream whether the audio is dual mono.

Remarks

In dual mono encoding, each channel is encoded separately. In stereo encoding, both channels are encoded together.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps | UWP apps]
Minimum supported server Windows 2000 Server [desktop apps | UWP apps]
Header codecapi.h

See also

Codec API Enumerations

ICodecAPI Interface