[mythtv-users] 50Hz PAL over 60Hz VGA (again x2) - OpenGL Video Renderer? Custom resolutions for playback?

[Mark Kendall]

On 6/11/07, Ben Lancaster <lists at benlancaster.co.uk> wrote:
> The other thing that looks promising is using the new OpenGL video
> renderer mentioned here - http://cvs.mythtv.org/trac/ticket/2649
>
> Specifically:
>
> > Quality of the progressive scan deinterlacers is pretty good. They
> > cope very well with low to moderate movement but less well with
> > fast motion. (Also seem to handle frame rate discrepancies better
> > than bobdeint - eg PAL at 60Hz)
>
> and:
>
> > TODO: Framerate conversions e.g. PAL to NTSC rates
>
>
> I tried adding the "UseOpenglVideo=1" switch to my mythfrontend
> command, but it seems to have no effect - I'm using latest mythtv-
> trunk RPMS from atrpms-bleeding; I'm guessing that it's because this
> hasn't made it in to SVN yet? Does anybody have any news on whether
> this is in trunk, and how to use it? I have an nVidia 6200 card, so
> from what the post says my hardware should cope with it OK.

You need to check out the latest mythtv-vid branch for the latest
opengl renderer. The opengl video output is built by default.

Once installed, under settings->tv->playback you should find some
options to specifify which decoder/renderer/osd/deinterlacer
combination to use for a given resolution.

My current 'preferred' deinterlacer is opengl 2x LinearBlend which is
giving me very good results.

Whether or not your card will cope is another question. There are so
many variables involved that I've stopped giving any indication - bus
type/speed, card type, source resolution/frame rate, output
resolution, driver version etc etc all have an impact.

Regards

Mark