You also need the corresponding xine-lib patch or an older xine-lib-1.2 snapshot (reverting src/vdr and include/xine/vdr.h, not the whole tree, to an old enough version should do; looks like changeset c3a5e9ba is what you want).
Umm ok? I'm using xine-lib-cvs-20070829224000 and xine-ui-cvs-20070829224000 with the patches included in the vdr-xine 0.8.0 patch directory. Then autogen, make, make install as usual.
Is this what you mean, or is there something I'm missing??
idiot error (catches me everytime)
make uninstall - on the 0.8.2 version, before make install on the old 0.8.0
Will report back if this downgrade fixes my pixelation, delayed audio etc....