Description | The media must already be created with mediaFoundationCreateMediaType
or via another API that returns a media type ID.
The following attributes are currently supported:
- "major type": One of the following
- "media type default"
- "media type audio"
- "media type video"
- "media type protected"
- "media type sami"
- "media type script"
- "media type image"
- "media type html"
- "media type binary"
- "media type file transfer"
- "media type stream"
- "subtype":
One of the following:
- "video format RGB32"
- "video format ARGB32"
- "video format RGB24"
- "video format RGB555"
- "video format RGB565"
- "video format RGB8"
- "video format AI44"
- "video format AYUV"
- "video format YUY2"
- "video format YVYU"
- "video format YVU9"
- "video format UYVY"
- "video format NV11"
- "video format NV12"
- "video format YV12"
- "video format I420"
- "video format IYUV"
- "video format Y210"
- "video format Y216"
- "video format Y410"
- "video format Y416"
- "video format Y41P"
- "video format Y41T"
- "video format Y42T"
- "video format P210"
- "video format P216"
- "video format P010"
- "video format P016"
- "video format v210"
- "video format v216"
- "video format v410"
- "video format MP43"
- "video format MP4S"
- "video format M4S2"
- "video format MP4V"
- "video format WMV1"
- "video format WMV2"
- "video format WMV3"
- "video format WVC1"
- "video format MSS1"
- "video format MSS2"
- "video format MPG1"
- "video format DVSL"
- "video format DVSD"
- "video format DVHD"
- "video format DV25"
- "video format DV50"
- "video format DVH1"
- "video format DVC"
- "video format H264"
- "video format MJPG"
- "video format 4200"
- "video format HEVC"
- "video format HEVC ES"
- "video format DVC"
- "video format MPEG2"
- "video format H264 ES"
- "audio format PCM"
- "audio format Float"
- "audio format DTS"
- "audio format Dolby AC3 SPDIF"
- "audio format DRM"
- "audio format WMAudioV8"
- "audio format WMAudioV9"
- "audio format WMAudio Lossless"
- "audio format WMASPDIF"
- "audio format MSP1"
- "audio format MP3"
- "audio format MPEG"
- "audio format AAC"
- "audio format ADTS"
- "audio format AMR NB"
- "audio format AMR WB"
- "audio format AMR WP"
- "audio format Dolby AC3"
- "audio format Dolby DDPlus"
- "all samples independent" (boolean): Specifies for a media type whether each sample is independent of the other samples in the stream.
- "fixed size samples" (boolean): Specifies for a media type whether the samples have a fixed size
- "compressed" (boolean): If this attribute is true, the media type is a compressed format. Otherwise, either the media type is uncompressed or the compression type is not known.
- "sample size" (integer): Specifies the size of each sample, in bytes, in a media type.
- "audio num channels" (integer): Number of audio channels in an audio media type.
- "audio samples per second" (integer): Number of audio samples per second in an audio media type.
- "audio avg bytes per second" (integer): Average number of bytes per second in an audio media type.
- "audio block alignment" (integer): Block alignment, in bytes, for an audio media type. The block alignment is the minimum atomic unit of data for the audio format.
- "audio bits per sample" (integer): Number of bits per audio sample in an audio media type.
- "audio valid bits per sample" (integer): Number of valid bits of audio data in each audio sample.
- "audio samples per block" (integer): Number of audio samples contained in one compressed block of audio data. This attribute can be used in compressed audio formats that have a fixed number of samples within each block.
- "audio channel mask" (integer): In an audio media type, specifies the assignment of audio channels to speaker positions. The value of this attribute is a bitwise OR of the following flags:
- SPEAKER_FRONT_LEFT (0x1)
- SPEAKER_FRONT_RIGHT (0x2)
- SPEAKER_FRONT_CENTER (0x4)
- SPEAKER_LOW_FREQUENCY (0x8)
- SPEAKER_BACK_LEFT (0x10)
- SPEAKER_BACK_RIGHT (0x20)
- SPEAKER_FRONT_LEFT_OF_CENTER (0x40)
- SPEAKER_FRONT_RIGHT_OF_CENTER (0x80)
- SPEAKER_BACK_CENTER (0x100)
- SPEAKER_SIDE_LEFT (0x200)
- SPEAKER_SIDE_RIGHT (0x400)
- SPEAKER_TOP_CENTER (0x800)
- SPEAKER_TOP_FRONT_LEFT (0x1000)
- SPEAKER_TOP_FRONT_CENTER (0x2000)
- SPEAKER_TOP_FRONT_RIGHT (0x4000)
- SPEAKER_TOP_BACK_LEFT (0x8000)
- SPEAKER_TOP_BACK_CENTER (0x10000)
- SPEAKER_TOP_BACK_RIGHT (0x20000)
- "video frame size": Width,height of a video frame, in pixels.
- "video frame rate": The frame rate is expressed as a numertor,denomitator ratio. For example, if the frame rate is 30 frames per second (fps), the ratio is 30,1. If the frame rate is 29.97 fps, the ratio is 30000,1001.
- "video aspect ratio": An X,Y pair
- "video avg bitrate" (integer): Approximate data rate of the video stream, in bits per second, for a video media type.
"video interlace mode" (integer): Describes how the frames in a video media type are interlaced. Use the following constants for this property:
constant kMFVideoInterlace_Progressive = 2
constant kMFVideoInterlace_FieldInterleavedUpperFirst = 3
constant kMFVideoInterlace_FieldInterleavedLowerFirst = 4
constant kMFVideoInterlace_FieldSingleUpper = 5
constant kMFVideoInterlace_FieldSingleLower = 6
constant kMFVideoInterlace_MixedInterlaceOrProgressive = 7
Note:See the mediaFoundationTranscode documentation for a complete
example of using this handler.
|