Declaration
property Subsampling: integer;
Description
This parameter only applies to RGB images. It enables additional compression in the chroma space, preserving luminance detail at the expense of color detail:
| Value | Description |
| 3 | 4: 4: 4 encoding preserves full chroma resolution |
| 2 | 4: 2: 2 encoding reduces chroma resolution to 1/2 of luminance resolution |
| 1 | 4: 2: 0 encoding reduces chroma resolution to 1/4 of luminance resolution |
| 0 | 4: 0: 0 encoding discards all chroma content, preserving luminance only. Because the codec uses a slightly modified definition of luminance to improve performance, it is preferred to convert an RGB image to monochrome before encoding rather than use this chroma subsampling mode |
Any value greater than 3 returns an error. The default value is 3.
UseCodecOptions must be
true.
You must set this property before each
PutFrame call.