On Wed, Jul 16, 2008 at 10:08:25AM +0100, Stuart Morris wrote: > It's my understanding that it is the pixel rate that > is doubled to meet the minimum bandwidth requirement > of 25Mpixels/sec for hdmi. > That is pixels are repeated hence doubling the > apparent horizontal resolution. > This is always the case for the 480i and 576i modes. > The modeline you need should be based on standard > EIA/CEA-861B timings like this: > > # 1440x576i @ 50Hz (EIA/CEA-861B) > ModeLine "1440x576" 27.000 1440 1464 1590 1728 576 581 > 587 625 -hsync -vsync Interlace > > Unfortunately I think there is a special flag that > must be set to indicate pixel-repetition is being used > and I am not sure how you would get a graphics card to > do this. > I have not tried using the above modeline so I cannot > comment on whether it works. > Worth a try though. > > There is a good list of EIA/CEA-861B modes here: > http://www.avsforum.com/avs-vb/showthread.php?t=947830&page=3 > I do know the 720p modeline works on my tv. > GTF timings generally don't work for hdmi. > > The other issue with interlaced modes is how are the > odd/even fields synchronised? > Is this the same problem with interlaced output on a > good old vga output? >
I'd like to know this too.. to be able to get 1:1 interlaced output, fields in sync like in the original stream. -- Pasi _______________________________________________ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
