Colorspace property

In AviSynth v2.58, the colorspace properties are:

 // Colorspace properties.
 enum {
   CS_BGR = 1<<28,
   CS_YUV = 1<<29,
   CS_INTERLEAVED = 1<<30,
   CS_PLANAR = 1<<31
 };
 
 // Specific colorformats
 enum { CS_UNKNOWN = 0,
        CS_BGR24 = 1<<0 | CS_BGR | CS_INTERLEAVED,
        CS_BGR32 = 1<<1 | CS_BGR | CS_INTERLEAVED,
        CS_YUY2  = 1<<2 | CS_YUV | CS_INTERLEAVED,
        CS_YV12  = 1<<3 | CS_YUV | CS_PLANAR,  // y-v-u, 4:2:0 planar
        CS_I420  = 1<<4 | CS_YUV | CS_PLANAR,  // y-u-v, 4:2:0 planar
        CS_IYUV  = 1<<4 | CS_YUV | CS_PLANAR,  // same as above
 };

Thus CS_YV12 gives for example (the dots are only inserted here for readability):

 CS_YV12  = 1<<3 | CS_YUV | CS_PLANAR
          = 1000 | 1000.0000.0000.0000.0000.0000.0000.0000 | 10.0000.0000.0000.0000.0000.0000.0000
          = 1010.0000.0000.0000.0000.0000.0000.1000

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