I've opened it in Handbreak, VLC, MediaInfo, FlipPlayer and others, all say 25 fps. Seems they are all reading 25p. QT player tells me it is AVC-Intra 1080i25, but playback rate states 25. AVC is a wacky codec, I'm not very fond of it, so I'm going to say this is 50i but reads as 25p playback. I'd treat it was 25p.
Bringing it into FCPX and treating it as 25p, export as 25p, I see clean video. I'd just stick with that.
It's interlaced. MediaInfo says it's top field first. But it's some weird kind of interlacing, MBAFF. Don't know. The scan lines look exceptionally thin, way more than there should be in simple two field 1080i.. Don't think FCP is handling it correctly. The exported ProRes MXF doesn't show any scan lines at all, not even the super thin ones of the original. The exported MXF is technically interlaced even though the scan lines aren't visible. MediaInfo reads it as interlaced, top field first.
I tried this but when I start with an interlaced timeline adding the footage it automatically switches back to progressive.
My whole project is an already edited documentary with sounddesign and music, so I really don't want it to do it all a new. Is there a simpler way to export from FCP 10.6.8. to an interlaced .mxf file