Seems to have been an issue with the way the streams were captured? I have seen it in other ts streams for TV shows. I’ve tried dropping them into multiAVCHD and the TNG era ones are indeed blu-ray compatible, though you’re right that the european standard framerate should be changed. Does the audio need a slight pitch re-adjustment or is it not adjusted in the first place? Also, the TNG era ones have an annoying Sky card before the paramount logo. Trimmed them off with Avidemux at key frames.