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Building a Transcode Topology with TopoEdit

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This topic describes how to create a transcoding topology in TopoEdit.

Note

This feature requires Windows 7

To build a transcoding topology

  1. On the File menu, click Render Transcode.

  2. In the Select Media Source dialog box, select the source file for transcoding.

  3. Click Open.

  4. In the Choose Transcode Profile dialog box, select one of the encoding profiles from the drop-down list.

    Note

    The profiles are loaded from the file TranscodeProfiles.xml.

  5. In the Choose target file dialog, select the name of the output file.

  6. TopoEdit creates the transcode topology and displays the topology nodes in main application window.

  7. Click the Play button on the toolbar to run the media session. Wait for encoding to complete.

TranscodeProfiles.xml

TopoEdit loads the encoding profiles from the file TranscodeProfiles.xml. This file is located in the Bin directory of the Windows SDK.

The file begins with a TedTranscodeProfiles element. Each profile begins with a TedTranscodeProfile element. Each profile consists of a set of values of the format <VALUE_NAME Value="VALUE"/>. The following values are defined:

Value Description
AudioAvgBytesPerSecond
 The average bytes per second for the audio stream. Equivalent to the MF_MT_AUDIO_AVG_BYTES_PER_SECOND attribute.
AudioBitsPerSample
 The number of bits per sample for the audio stream. Equivalent to the MF_MT_AUDIO_BITS_PER_SAMPLE attribute.
AudioBlockAlignment
 The block alignment for the audio stream. Equivalent to the MF_MT_AUDIO_BLOCK_ALIGNMENT attribute.
AudioEncodingProfile
 A codec-specific value that defines the audio profile. Equivalent to the MF_TRANSCODE_ENCODINGPROFILE attribute.
AudioFormat
 The encoded audio subtype. Equivalent to the MF_MT_SUBTYPE attribute.
AudioNumChannels
 The number of channels in the audio stream. Equivalent to the MF_MT_AUDIO_NUM_CHANNELS attribute.
AudioSamplesPerSecond
 The sample rate of the audio stream, in samples per second. Equivalent to the MF_MT_AUDIO_SAMPLES_PER_SECOND attribute.
ContainerType
 The file container type. Equivalent to the MF_TRANSCODE_CONTAINERTYPE attribute.
ProfileName
 The display name of the profile.
SkipMetadataTransfer
 Specify 1 if metadata should not be transferred to the output file, or 0 if metadata should be transferred. Equivalent to the MF_TRANSCODE_SKIP_METADATA_TRANSFER attribute.
VideoBitrate
 The average video bitrate. Equivalent to the MF_MT_AVG_BITRATE attribute.
VideoEncodeComplexity
 A codec-specific value that defines the encode quality. Equivalent to the MF_TRANSCODE_QUALITYVSSPEED attribute.
VideoEncodingProfile
 A codec-specific value that defines the video profile. Equivalent to the MF_TRANSCODE_ENCODINGPROFILE attribute.
VideoFormat
 The encoded video subtype. Equivalent to the MF_MT_SUBTYPE attribute.
VideoFrameHeight
 The height of the output video. Equivalent to the MF_MT_FRAME_SIZE attribute.
VideoFrameRateDenominator
 The denominator of the frame rate of the output video. Equivalent to the MF_MT_FRAME_RATE attribute.
VideoFrameRateNumerator
 The numerator of the frame rate of the output video. Equivalent to the MF_MT_FRAME_RATE attribute.
VideoFrameWidth
 The width of the output video. Equivalent to the MF_MT_FRAME_SIZE attribute.
VideoPixelAspectRatioDenominator
 The denominator of the pixel aspect ratio (PAR) of the output video. Equivalent to the MF_MT_PIXEL_ASPECT_RATIO attribute.
VideoPixelAspectRatioNumerator
 The numerator of the PAR of the output video. Equivalent to the MF_MT_PIXEL_ASPECT_RATIO attribute.

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