How to convert fields to frames?

dmcmeans wrote on 7/3/2005, 1:03 PM
I have some footage taken with a GL1 in normal (not "frame") mode that I'd like to convert the fields to frames.

I understand this reduces the vertical resolution. That's OK.

I'm seeing plenty of reference to "converting fields to frames" on the forum, but I'm not understanding how one does this exactly.

Can I do this in Vegas? (Version 5). Thanks.

Comments

GlennChan wrote on 7/3/2005, 1:21 PM
A- The easy, ok-quality way.

Go into project properties under file.
Set field (thing) to progessive, not lower or upper field first.
Select deinterlace method to blend fields.

B- Use Mike Crash's de-interlace filter, which preserves vertical detail on static parts of an image.

http://mikecrash.wz.cz/

Important:
Set project properties to PROGRESSIVE.
Set deinterlace method to NONE.

Apply the filter to your footage. Putting it on the master output is a decent place to put it. Click on the green thingamabobber on the video preview window.


You might get better results if you shoot in frame mode??
David Jimerson wrote on 7/3/2005, 2:21 PM
Whether you set to "Blend Fields" or "Interpolate Fields" depends on how much motion you have in the footage.

If there's not much motion, then "Blend Fields" is your better bet and will save you some resolution. But if you have a moderate to heavy amount of motion, then "interpolate fields" will get you smoother motion, and you'll want that, despite having more of a resolution loss.

And, I would suggest going into your clip's properties and disabling the resample.

I invite you to try Celluloid for one-click conversion to 24p or 30p. Check it out at the VASST website . . .
Laurence wrote on 7/3/2005, 7:46 PM
Well if you're using Vegas 5 or earlier, use the tricks mentioned above. If you're using Vegas 6, just render to 30p or 24p and vegas will do it fine without extra steps.
farss wrote on 7/4/2005, 12:06 AM
Do you really want to convert fields to frames?
If that's truly the case then I think none of the advice given so far is correct. As you shot 60i then converting each field to a frame will yield 60p which might be a useful trick. Unfortunately I'm not too certain of how to do precisely this, possibly slowing the clip to exactly 50% would force Vegas to do this. There was also some talk about doing this in AVISynth I think.
If anyone does know a genuine way to do this (60i->60p with HDV) I'm interested as it'd be a good way to do smooth SD SloMos.
Bob.
dmcmeans wrote on 7/5/2005, 7:23 AM
Do you really want to convert fields to frames?

Yes. My footage is of a close lightning strike, and I'm curious to know if seeing the fields (as frames) will reveal anything interesting about the progression of the lightning.

It's not a long clip, so even a manual solution is sufferable.

Here's the clip if you're interested.
farss wrote on 7/5/2005, 2:27 PM
You can do this manually.
Export / Save a frame as a still image. Open with Photoshop. Apply de-interlace filter and save as new file. Apply de-interlace filter again selecting the other field and save as another file. Repeat for each frame.
PossibilityX wrote on 7/5/2005, 5:08 PM
If I ever entertained notions about how fun it might be to get struck by lightning, those notions have evaporated!

That still image of the asphalt convinced me.

Here in Oklahoma we get some spectacular thunderstorms...