[basco]

I cannot reproduce on my intel setup I don't have an nvidia setup though.   

ok, so you think this is videocards related eventhough it occurs when sw decoding videos?
since 0206 is the first release that show these black artefacts what change do you think might have cause this? (wrt 0205)

edit:
yeah... could havce done this myself. the obvious one is #13481... is this videocard related? w

the black artefacts ony occur in low res videos. they do not occur in 1080p.

i'm not the expert by far. only a coder.
went through the changes in the code a bit..
so in line 2710 of LinuxRendererGL.cpp there is a resolution check...
seems to be removed from YUV2RGBShaderGL.cpp 

 Right direction, but wrong file. One is for the output and therefore correct if your resolution is > 1000 width or 600 height with 8 bit visuals. 

just tried #0221, still black artefacts (of course). does anyone have some idea how to proceed?