gmalivuk wrote:If it still played properly on a dvd player, I wouldn't be surprised if such a thing were done intentionally, as a form of copy protection.5th Earth wrote:I'm reminded of a friend who was ripping the DVDs of a TV show onto his computer. He couldn't get the conversion from interlaced to progressive scan to come out right no matter what he did. Eventually, he figured out that the show had been deinterlaced in the incorrect order, rescaled, and then reinterlaced on the DVD, making it impossible to remove the first improper interlacing.
It is probably is even worse on a DVD player, maybe alleviated if you see on a low resolution CRT screen. It is pure incompetence of the people who mastered the DVDs (and/or maybe from where the masters come from too). Some things are recoverable in software, like the original 24fps FILM out of a fieldblended: FILM -> Telecine -> NTSC -> Blendconversion -> PAL - Video conversion.... but others, like yours where they resized while interlaced, or things like "taking interlaced material, deinterlacing it with an absolutely terrible deinterlacer that discards every other field and interpolates the other, and coding the “progressive” result as interlaced on the DVD" are most likely irrecoverable... (more horror stories here)