chroma conversion from ffmpeg

I have a sample of TSCC video of which ffmpeg says it does not know what to do for chroma conversion.

the chroma is 3, which seems to be PIX_FMT_BGR24.

The conversion table in chroma.h however contains this line VLC_FF_RGB_DEFAULT( ('R','V','2','4'), PIX_FMT_RGB24, PIX_FMT_BGR24 ),

which in the case of my intel results in this conversion. define VLC_FF_RGB_DEFAULT( fcc, le, be ) VLC_FF( fcc, le )

Ergo, because PIX_FMT_RGB24 is "preferred", for conversion from VLC->ffmpeg, PIX_FMT_BGR24 isn't recognized at all when we go from ffmpeg->vlc ...