I have various blu-rays from the UK which are encoded at 25fps progressive, but because of the lack of a progressive blu-ray 25fps standard, are "flagged" as MBAFF interlaced.
However, when I use the idet filter with ffmpeg, many of these files have anywhere from 10-70 interlaced frames (TFF) out of a random 1000 sample set, and when I seek in MPC-HC, I could swear that I'm seeing interlaced jaggies, but they are obviously less pronounced then on a PAL DVD due to resolution.
So, how would you guys handle these? Would you:
- Just encode them straight progressive with no filters and ignore the interlaced frames?
- Would you use QTGMC with InputType=1 regardless of how many interlaced frames ffmpeg found?
- Use QTGMC with double-rate?
- Use QTGMC with single-rate?
- Do something else?
Examples are seasons 5-9 of Doctor Who (UK Version), Life, Frozen Planet - all BBC shows.