[Mug Funky]

field-blends use up buttloads of bitrate and require bobbing on playback... that's the main reason to restore the non-blended source. also if you plan on standards-converting it a second time and don't want to have blurry crap as an output.

if you have bitrate to spare, you can easily encode an interlaced xvid and play back with on-the-fly bobbing. it's quite a good solution for anime, where there's lots of static scenes.