Re: [xine-devel] Video-output image sync.

[Micael B. <mic...@te...>]

On Monday 08 November 2004 14.36, Thomas Hellstrom wrote:

>As you say, the problem can be really bad when frame and image rates are
>very close. A typical such
>situation could be to play back on an EPIA motherboard connected to a
>TV. This forces the EPIA display frequency to 50Hz.

Yes, and I think this is a quite common set-up, with freevo or mythtv etc. The 
solution that I use in my freevo set-up onto a projector, is to go higher 
(like 85Hz) to minimize the problem, but that eats bandwidth instead, and 
1920x1080@85 is way beyond most display devices, even if the picture will 
show, it will be way over the specified bandwidth of most monitors / 
projectors, with a softened output as a result. And that is not even possible 
with a TV set of some sort.

>However, even if they don't match, since DRM vsync's are numbered there
>is a possibility to choose the "best" vsync number for image display,
>and probably get smoother playback than is possible today. So there are
>actually other applications as well: Simply get the smoothest possible
>playback on any monitor.

Do you mean that xine would optionally change the vertical frequency to match 
the input framerate according to the availible modelines? That would be a 
great solution!

 - Micael