YV12 yuv pixel format
This is the format of choice for many software MPEG codecs. It comprises an NxM Y plane followed by (N/2)x(M/2) V and U planes.
| Horizontal | Vertical | |
| Y Sample Period | 1 | 1 |
| V Sample Period | 2 | 2 |
| U Sample Period | 2 | 2 |
Positive biHeight implies top-down image (top line first)
ATI says they have a download which contains this codec but I can't find it on their site. If you would like something similar for Quicktime, try here.