Unintended color conversion?

[Prettz]

When encoding a clip from avisynth to xvid using vdubmod, I noticed these lines at the beginning of the debug output for the first pass:

[Virtuald] ICM_DECOMPRESS_QUERY
[Virtuald] ICM_DECOMPRESS_BEGIN
[Virtuald] colorspace conversion: YV12 (planar) -> RGB24,flipped
[Virtuald] ICM_DECOMPRESS_END
[Virtuald] ICM_DECOMPRESS_BEGIN

Note that the output of the avisynth script was YV12 and that 'Fast Recompress' was checked. Does this mean that virtualdub actually did do a color conversion? I've never seen the debug output say that since I started using vdubmod, and it also did not say that when it started up the second pass. I need to know if it did in fact do a colorspace conversion so I know whether I have to redo the first pass.

[sh0dan]

VDub(Mod)initially requests RGB24 for preview in the display. When you actually do the compression, the file is opened again in YV12, and passed directly to Xvid.

[Prettz]

Ah, thank you very much. You've just saved me another 6 hours of encoding.