In 20061216225847.GA10797@realh.co.uk, Tony Houghton wrote:
I've tried it out in an experimental video player I'm writing (which is easier than getting mythtv to work!). The [DRI] vsync appears to work but I haven't tried it on a TV yet to see if it solves the interlacing problem.
I managed to try it out today. It doesn't quite work, but I think it has potential to be made to. The problem is that vsync interrupts are generated at 50Hz rather than 25Hz and I don't know how to distinguish between top and bottom fields. The mythtv developers might know though, so I'll ask on their mailing list.