Rendering for Video.

I had real issues with the quality of the final .avi file, which on render seemed very clear, but on playback was full of smearing and artefacts reminiscent of 16 bit colour processing rather than 24 bit. Even upping the Cinepak quality threshold to 100% made little difference, before I realised that on quick movement (especially the church Ident) I had to render the files uncompressed or at the least to DV Video standard. The results were startling in the amount of clarity, which makes me wonder Max would use the Radius Cinepak Codec as the default for .avi rendering? Like so many aspects of the programme, it does not seem to follow a logical layout.