Interlace or don't?

Twoflower · Post by **Twoflower** » Fri Jul 18, 2003 3:09 pm

N00b question alert again.

I'm reading Ermac's guides but I think I see a catch-22... here's the AVS script I have attached to each of my clips:

MPEG2Source("D:\someclip.d2v")
AssumeFPS(24)
Telecide()
Decimate(5)

...because the guide recommends editing in Progressive, since it's easier and Premiere 6.5 has trouble doing effects on interlaced video.

But it also notes that if you want to enter AMV competitions you're going to need 720x480 interlaced 29.97 video. Which the above would not be capable of producing.

How can I do both effects AND competition quality video? I'm completely confused by the issue of when you interlace and when you don't and where in the chain you should be converting something and how... agh.

What sort of script should I use to import my basic clips to edit together, and what new project settings do I need? I know I can produce a properly progressive, resized, DIVX or whatever version for internet distribution later with virtuadub regardless of what I make -- I want to ensure I'm not locked out of competitions or anything for Inferior Video, though.

post-it · Post by **post-it** » Fri Jul 18, 2003 3:38 pm

if you study anything too hard you will end-up cross-eye'd, crying and close the book!

think about what you are doing and this all becomes very very easy to do.

Images
. . maybe you have a happy thought you would like to share with others.
. . possibly, those thoughts are also seen by someone else in a Video somewhere.
. . . . soo, you put together your thoughts and organise them the way you feel them 8)

Sounds
. . while putting your thoughts together, maybe a song comes to mind.
. . maybe you can match the song to the events in you Video.

Done
. . the Video and Sound are now one large raw AMV 8)

Compressing that file is not an art-form, so you now take your RAW AMV and see which Compression Routine looks the best to you - that is what these Guides are for

"how to Finalize your AMV"
. . from the way you have stated your question it is easy to tell that your thoughts are ignoring the Images you are trying to create and instead they are being Focused on "How To" do it

do things at your own pace and let the guides explain alternitives if you should need to use them

FurryCurry · Post by **FurryCurry** » Fri Jul 18, 2003 3:38 pm

A couple things:

1) You have the assume FPS line in the wrong place. the script should look like this:

MPEG2Source("D:\someclip.d2v")
Telecide()
Decimate(5)
AssumeFPS(24)

2) In the Guide, under "useful scripts", you'll fins an avisynth script to convert your progressive footage back to 29.97 interlaced.

Like so:

Framerate and format conversion scripts:

All of which you can probably work out for yourself, but useful for reference:

Converting Film Footage at 23.976fps to Interlaced 29.97fps

AssumeFrameBased
SeparateFields
SelectEvery(8, 0,1, 2,3,2, 5,4, 7,6,7)
Weave

This produces Bottom Field First interlaced footage, if you need Top Field First then do:

AssumeFrameBased
ComplementParity
SeparateFields
SelectEvery(8, 0,1, 2,3,2, 5,4, 7,6,7)
Weave

To make a DVD , use the Top Field First script.

FurryCurry · Post by **FurryCurry** » Fri Jul 18, 2003 3:42 pm

To clarify, use those quoted scripts on the completed, master file of your amv, the huff or uncompressed version.

Twoflower · Post by **Twoflower** » Fri Jul 18, 2003 4:25 pm

Okay -- so it doesn't matter what I'm editing with, since I can convert the gigantic raw huffy output to whatever a contest may need. (provided I didn't resize it down from 720x480, I'd hazard...)

Phew. I just wanted to make sure I wasn't shooting myself in the foot before I got started!

Ashyukun · Post by **Ashyukun** » Fri Jul 18, 2003 10:19 pm

Twoflower wrote: Phew. I just wanted to make sure I wasn't shooting myself in the foot before I got started!

Better to ask and make sure than to mess it up.

Basically, yeah- you can edit in whatever you want and then convert it to the contest guidelines. A lot of cons these days take MPEG-2 encodes anyway and use hardware that will let you set the 'progressive' flag when you encode it so you don't have to worry about telecining the video at all.