Help Version 19.0.2017.10.27
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Type |
Name |
Description |
long |
Format |
Gets or sets a value that represents the codec format. Possible values are: FORMAT_MCMP: [5] MCMP format |
long |
Quality |
Gets or sets the quality factor for compression. A QFactor of 2 has the highest quality and lowest compression ratio. As the QFactor increases, the quality decreases and the compression ratio increases. A QFactor of 255 has the lowest quality and highest compression ratio. Possible values for each format are: FORMAT_MCMP: -9...-1 and 2...255 where negative values represent: QFACTOR_PQ1: (-1) Perfect quality option 1. QFACTOR_PQ2: (-2) Perfect quality option 2. QFACTOR_QFS: (-3) Quality far more important than size. QFACTOR_QMS: (-4) Quality more important than size. QFACTOR_QS: (-5) Quality and size are equally important. QFACTOR_SQS: (-6) Size more important than quality - Sharp. QFACTOR_SQT: (-7) Size more important than quality - Less Tilling. QFACTOR_MCQ (-8) Max Compression, keeping quality as good as possible. QFACTOR_MC: (-9) Max compression FORMAT_LOSSLESSJPEG: QFactor is ignored for lossless JPEG. FORMAT_MJPEG_411: 2...255 FORMAT_MJPEG_422: 2...255 FORMAT_MJPEG_444: 2...255 |
long |
Flags |
Gets or sets the compression flags. These flags can be OR-ed together, except for the FLAGS_INTERLEAVE_XXX flags. Only one of the interleave flags can be set. Setting FLAGS_INTERLEAVE_NEVER is equal to setting no interleave flags at all. Possible values are:
FLAGS_DISABLE_ENCODER: [0x0001] Disables the MCMP/MJPEG VFW encoder. NOTE: This flag is deprecated and should not be used anymore. FLAGS_DISABLE_DECODER: [0x0002] Disables the MCMP/MJPEG VFW decoder. NOTE: If you disable the decoder, you will not be able to use it to decode MJPEG or MCMP video again until re-enabled programmatically or through a utility like GraphEdit. This flag is deprecated and should not be used anymore.. FLAGS_INTERLEAVE_NEVER: [0x0000] Save images non-interleaved. FLAGS_INTERLEAVE_288: [0x0004] Interleave images with height >= 288. FLAGS_INTERLEAVE_ALWAYS: [0x0008] Set this to save interlaced MJPG files. FLAGS_FLIP_YUV: [0x0010] Indicates how YUV video data is handled. If this flag is not set, then YUV video with a positive height value (BITMAPINFOHEADER.biHeight) is handled as normal video, top side up. YUV video with a negative height value is handled as flipped video, bottom side up. If this flag is set, then YUV video with a positive height value is handled as flipped video, bottom side up, and YUV video with a negative height value is handled as normal, top side up. FLAGS_OVERRIDE_DEFAULTS: [0x0020] If this flag is set, then the defaults are overridden. FLAGS_NO_REGISTRY_SAVE: [0x0040] Do not save these settings in the registry. Set this flag if the compression is temporarily disabled because the input does not permit compression. |
long |
FilterState |
(Read only) Gets a value that represents the state of the filter. Possible values are: FilterState_Stopped: [0] The filter is stopped. |
This is a standard DirectShow® interface. For full documentation, please refer to DirectShow® documentation.
This interface allows you to select only the quality factor for the codec. For full control over the codec settings, use the IMCMPEncoderOption interface.
Type |
Name |
Description |
long |
Quality |
Gets or sets the quality factor for compression. Possible values are: 0.0...1.0: Same meaning as in DirectShow®. 1.0 is the best quality/lowest compression and 0 is lowest quality/highest compression. Over 1.0: Lossless compression. Setting the quality factor to this value will automatically set the format to Lossless JPEG. -9...-1: Predefined quality factor. For more information on these values, refer to IMCMPEncoderOption::QFactor. Setting the quality value to one of these values will automatically set the format to MCMP. < -9: Undefined. Do not use. |