[vdr] Re: divx with horizontal 768 pixels

[Tobias Kerner <tobschle@gmx.de>]

Mike Pieper wrote:

> Full PAL resolution is 720x576. But the TV-pixels are not square. If you want 
> to have square pixels to show it on a computer screen (which has square 
> pixels) you have to scale it to 768x576. Because AVI-files are primary 
> intended for use on computers they use this resolution. If they would have a 
> 720x576 resolution you wouldn't have a good picture on a computer monitor.
> 
> In the opposite direction (output on TV-out of a DVB-card) you have to keep in 
> mind that this card 'knows' about the non square TV-pixels. Therefore the 
> maximum resolution is 720x576. You have to scale your video to 720 pixel 
> (which would look slightly squeezed on computer screen) to get a correct 
> output on the TV (in fact your TV will stretch it).
> 
> Mike
> 

now I understand. I always thought the TV pixels are stretched in the 
heighth. so when I have a 4:3 movie with a resolution 544x576 recorded 
with vdr and now I want to convert it to divx, should I scale it to 
720x576 (no the correct aspect ratio) or 720x540 (aspect ration would be 
correct then)?

tobias