ConverttoYV12() error

[varunb]

Is it true that converttoyv12(matrix="rec709") function is wrong to use while frameserving a HD quicktime video ? Whenevr I try to do so, it says "Invalid matrix parameter (RGB data only)" . I am not able to figure out y it says so. There seems to b no error when i use converttorgb32(matrix="rec709"). Any help guyz ?

[scharfis_brain]

the matrix parameter only is accepted with YUV <-> RGB conversions.