The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence
jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg
(see the actual script for the complete working environment).
While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities.
Can anybody give me a pointer how this script could generate HD video frames?
Klaus