This YUV 4:1:1 format is registered as a PCI standard format. Mediamatics MPEG 1 engine is the only codec (other than a Brooktree internal one) that I know of that can generate it.
Horizontal | Vertical | |
Y Sample Period | 1 | 1 |
V Sample Period | 4 | 1 |
U Sample Period | 4 | 1 |
Effective bits per pixel : 12
Positive biHeight implies top-down image (top line first)