Codec API Enumerations
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
| Enumeration | Description |
|---|---|
| eAVAudioChannelConfig | Specifies the speaker configuration for the audio channels in the audio bit stream. |
| eAVDDSurroundMode | Specifies whether the audio is encoded in Dolby Surround. |
| eAVDecAACDownmixMode | Specifies whether an AAC decoder uses standard MPEG-2/MPEG-4 stereo downmix equations. |
| eAVDecAudioDualMono | Specifies whether the input audio stream is stereo or dual mono. |
| eAVDecAudioDualMonoReproMode | Specifies how the decoder reproduces dual mono audio. |
| eAVDecDDOperationalMode | Specifies the compression control mode for a Dolby AC-3 audio stream. |
| eAVDecHEAACDynamicRangeControl | Specifies whether an AAC decoder performs dynamic range control. |
| eAVDecVideoInputScanType | Specifies how the decoded video stream is interlaced. |
| eAVDecVideoSoftwareDeinterlaceMode | Specifies a video decoder's software deinterlace mode. |
| eAVDecVideoSWPowerLevel | Specifies the power-saving level of a video decoder. |
| eAVDSPLoudnessEqualization | Specifies whether loudness equalization is enabled in an audio decoder or digital signal processor (DSP). |
| eAVDSPSpeakerFill | Specifies whether speaker fill is enabled in an audio decoder or DSP. |
| eAVEncAudioDualMono | Specifies whether 2-channel audio is encoded as stereo or dual mono. |
| eAVEncAudioInputContent Enumeration | Specifies whether the audio content contains music or voice. |
| eAVEncCommonRateControlMode | Specifies the rate control mode. |
| eAVEncCommonStreamEndHandling | Specifies whether the encoder discards partial groups of pictures (GOPs) at the end of the stream. |
| eAVEncDDAtoDConverterType | Specifies the type of analog-to-digital (A/D) conversion for a Dolby Digital audio stream. |
| eAVEncDDDynamicRangeCompressionControl | Specifies the dynamic range control profile in a Dolby Digital audio stream. |
| eAVEncDDHeadphoneMode | Specifies headphone mode for a Dolby Digital audio stream. |
| eAVEncDDPreferredStereoDownMixMode | Specifies the preferred stereo downmix mode for a Dolby Digital audio stream. |
| eAVEncDDProductionRoomType | Specifies the room type for a Dolby Digital audio stream. |
| eAVEncDDService | Specifies the audio service contained in a Dolby Digital audio stream. |
| eAVEncDDSurroundExMode | Specifies whether a Dolby Digital audio stream is encoded in Dolby Digital Surround EX. |
| eAVEncInputVideoSystem | Specifies the nominal range for a video source. |
| eAVEncMPACodingMode | Specifies the MPEG audio encoding mode. |
| eAVEncMPAEmphasisType | Specifies the type of de-emphasis filter that should be used when decoding. |
| eAVEncMPALayer | Specifies the MPEG audio layer. |
| eAVEncMPVFrameFieldMode | Specifies whether the encoder produces encoded fields or encoded frames. |
| eAVEncMPVIntraVLCTable | Specifies which variable-length coding (VLC) table to use for entropy coding. |
| eAVEncMPVLevel | Specifies the MPEG-2 profile. |
| eAVEncMPVProfile | Specifies the MPEG-2 profile. |
| eAVEncMPVQScaleType | Specifies whether the quantizer scale is linear or non-linear. |
| eAVEncMPVScanPattern | Specifies the macroblock scan pattern. |
| eAVEncMPVSceneDetection | Specifies how the encoder behaves when it detects a new scene. |
| eAVEncMuxOutput | Specifies the type of output stream produced by a multiplexer. |
| eAVEncVideoChromaResolution | Specifies chroma resolution. |
| eAVEncVideoChromaSubsampling | Specifies chroma siting. |
| eAVEncVideoColorLighting | Specifies the intended lighting conditions for viewing a video source. |
| eAVEncVideoColorNominalRange | Specifies the nominal range for a video source. |
| eAVEncVideoColorPrimaries | Specifies the color primaries of the video. |
| eAVEncVideoColorTransferFunction | Specifies the conversion function from R'G'B' to RGB. |
| eAVEncVideoColorTransferMatrix | Specifies the conversion matrix from the Y'Cb'Cr' color space to the R'G'B' color space. |
| eAVEncVideoFilmContent | Specifies whether the original source of the input video was film or video. |
| eAVEncVideoOutputFrameRateConversion | Specifies whether the encoder converts the frame rate. |
| eAVEncVideoOutputScanType | Specifies how the encoder interlaces the output video. |
| eAVEncVideoSourceScanType | Specifies whether the input frames for an encoder are progressive or interlaced. |
| eAVFastDecodeMode | Specifies the video decoding speed. |
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