Interlaced problems

[miepel]

Hi,

I have two problems concerning interlaced mp4 video.

Problem 1:
Is there a chance to convert interlaced mpeg2 video to mp4 interlaced output (no de-interlacing at all)? I didn't find this option in Handbrake, the output is always progressive. Should I use other software?

Problem 2:
I have some mp4 files, that are interlaced, but my TV and my PC think, they are progressive (strong comb-effects). Is it possible to change the wrong file headers?

Thanks for your help!

Miepel

PS: Please excuse my poor English.

[jagabo]

1) make sure Handbrake doesn't screw up the interlacing with incorrect filtering. Then:
https://forum.videohelp.com/threads/344902-Detelecine-decomb-issues?p=2151515&viewfull=1#post2151515

[manono]

I think your problem 2 gives the answer to your problem 1. Many (Most? All?) players won't deinterlace x264 video encoded as interlaced. Either deinterlace it or bob it before/while encoding.

Edit: After reading jagabo's reply and link, it's not 'All' players won't deinterlace it. Maybe just 'Many'?

[jagabo]

Most players I've used will detinterlace h.264 if it is encoded and flagged as interlaced. I think he meant the frames are interlaced but they were encoded (and flagged) as progressive. I don't know if there are any tools that would let you change the flag. In any case, it wouldn't really work right -- the chroma channels will be screwed up.

[enim]

screw up the interlacing with incorrect filtering.
Many (Most? All?) players won't deinterlace x264 video encoded as interlaced.

i hv seen many H264/AVC1 videos screwed up with incorrect filtering and containing improper de-interlacing artifacts while scene change.