Writing Plugins again

[Si]

Is the bitmap presented internally to Avisynth plugins "upsidedown" compared to the one presented internally in VirtualDub.

(or am I getting in a right mess with my code :confused: )

[dividee]

For RGB bitmaps, the first scanline is at bottom. So the ordering is bottom-up. I think this is also the case in VirtualDub, as it is the standard for Windows RGB bitmaps.
For YUV bitmaps, the first scanline is the top one (top-down).

[Si]

Thanks for clearing that up for me.
regards
Simon