Log in

View Full Version : DGIndex detects Progressive source as having Top Field First field order?


simcut
17th March 2013, 16:59
Hi there

I have a source DVD that has Progressive video (DGIndex shows it as Progressive, and I have checked it with my eyes, it definitely does NOT have any interlace) on it, and DGIndex detects it as having TFF (Top Field First) field order on it, I've also in the past had BFF for Progressive content

What should I do when I get such a situation in terms of coming to encode it, do I add in the AssumeTFF() / AssumeBFF() line or just leave it out completely?

should the Assume things in the avisynth script only be there for interlaced content?

Thanks in advance

ChiDragon
17th March 2013, 17:37
You shouldn't be adding in any AssumeTFF/BFF for MPEG2Source in the first place. That's been taken care of by the source filter automatically for something like 8 years, at the minimum.

It doesn't matter what it's set to for progressive content because the information is simply ignored.

TheSkiller
17th March 2013, 18:29
Your DVD may be encoded with progressive flags, but it's quite common for DVDs to be encoded with interlaced flags even though the content is in fact progressive. DGIndex only tells you what the flags say.
Trust your eyes, but beware, if a DVD was encoded with interlaced flags, there is nothing that would prevent an interlaced title, effect, transition or anything like that somewhere.

simcut
25th March 2013, 20:52
Thanks for the advice/guidance guys, sorry only just noticed the replies :)