How to join 29.97i clips with 15p clips

[Chainmax]

I have a somewhat related question: I have 100+ short clips taken from a video camera (so, 29.97i) that have to be concatenated with 15p footage. As the number of 29.97i clips are so big, deinterlacing them is not really an option as it would consume too much time. How would you suggest me to go about this?

[Blue_MiSfit]

@ Chainmax:
Is your time constraint mostly due to the difficulties of managing the sheer number of files, or the actual encoding time of using a good deinterlacer?

~MiSfit

[mikeytown2]

@Chainmax
A quick and dirty way to do it:

SeparateFields().SelectEven()
AssumeTFF().SelectEven()
ZoomBox(Width,Height, SourceDAR=SourceDisplayAR) #or use resizer to get back proper AR


Which will give you approximately 14.985fps
ZoomBox() (http://forum.doom9.org/showthread.php?p=1111789#post1111789)

[Chainmax]

@ Chainmax:
Is your time constraint mostly due to the difficulties of managing the sheer number of files, or the actual encoding time of using a good deinterlacer?

~MiSfit

Both: there are too many files to manage and even a fast, mediocre deinterlacer will make encoding times much too long (my current, very simple script manages ~2xrealtime speeds and don't want to go much below that).


mikeytown2: thanks for the suggestion, but if I understood correctly what you suggest is taking the 29.97i footage and convert it to 14.985p. What I need is the other way around: taking the 15p footage and convert it to 29.97i as I'm creating a DVD.

[manono]

ChangeFPS(29.97)? Encode as interlaced.

Or:

ChangeFPS(19.98). Encode as progressive and afterwards apply DGPulldown for 19.98->29.97fps. That's kind of how most 15fps silent films are done, except they're hard telecined, where you'll be soft telecining.

[Chainmax]

Concatenating 29.97p and 29.97i into a single file and then encode the whole thing as interlaced (for CCE: no progressive flag, alternate scanning, I assume)? I never encoded progressive footage as interlaced so forgive my ignorance, but won't that screw up the 29.97p portions?

[Leak]

I never encoded progressive footage as interlaced so forgive my ignorance, but won't that screw up the 29.97p portions?
Why would it?

I guess you'll have noticed that static scenes without movement in interlaced footage look just fine when watched. Now think of progressive material as a concatenation of oodles of such scenes that happen to have a length of one frame only... ;)

np: The Orb - Thursday's Keeper (Cydonia Remastered)

[manono]

Concatenating 29.97p and 29.97i into a single file and then encode the whole thing as interlaced (for CCE: no progressive flag, alternate scanning, I assume)? I never encoded progressive footage as interlaced so forgive my ignorance, but won't that screw up the 29.97p portions?
You could encode them separately if you wish and join during authoring. Muxman allows this. Together or separate, it doesn't make any difference. And no, it doesn't screw up the 29.97p portions.

Virtually all progressive 29.97fps footage is encoded for DVD as interlaced. Yes, alternate scanning, no progressive flag. Also ConvertToYUY2(Interlaced=True) for CCE, and something similar (perhaps?) for other encoders.