[mythtv] XVideo XvMC VLD broken

[Terry Barnaby]

> Your OSD fix in CVS has certainly fixed the problem with changing
> channels due to the OSD locks. Thanks. Things are much better now.
> However I have still had a channel change fail after quite a few
> changes. Here is an example where two channel changes worked Ok
> and the third failed. On the third case I get a frozen piucture
> and heavily stuttery sound.
> I will continue to investigate.
> In this case the error messages where: 

Hi Daniel,

I have just tried setting the number of Video buffers from 8 to 16
on the line: videoout_xv.cpp:531 vbuffers.Init(...).
This seems to work around the problem of channel changing on my
Via M10K XvMC VLD box.

Although this is covering up the problem, in the longer run
do you think it is work increasing the number of video buffers
for XvMC VLD machines where the number of XvMC surfaces available
allow this ?

Terry