In the latest version (0.8.0) this seems to be fixed, I don't experience this problem anymore and in dvd-slideshow.sh the parameter "-S 420mpeg2" or "-S 420_mpeg2" is used on every call of ppmtoy4m.
I think this bug can be closed. -- ppmtoy4vm requires "-S 420mpeg2" https://launchpad.net/bugs/5910 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs