[QUOTE=signals;2076361]The most efficient resolution (smallest file size, fastest processing time) is the one that matches the native resolution of your mobile device (iPod=320x240 etc.). For viewing on a PC, use a larger size. For viewing on a TV, also choose a large size but do not try to use DVDFab as an upscaler; most HDTVs have dedicated hardware and firmware routines that can do this on the fly must faster and better.[/QUOTE]
Totally correct Signals…
The resolution to use for TV & PC for a normal DVD is approximately 700 pixels wide by whatever the depth required to maintain the correct aspect ratio of the title. eg in PALLand, normal res would br 720 x 576 (4:3 Aspect ratio), 720 x 400 (16:9) and 720 x 300ish (Widescreen) and they can vary from title to title.
If you set resolutions LARGER than this, you are then getting FAB to interpolate the pixels needed to fill in the image.
As Signals said, most HD sets have “UPSCALERS” built in which do a far better job.
For smaller devices, as Signals said, a resolution as close as possible to that device’s native screen resolution is the best.