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interlaced with different footage on upper and lower fields
I would like to try to have two different videos on the upper and lower fields in an interlaced video. I guess it will look like crap, but that doesn’t matter. Is this possible and how?
Thanks a lot! -
6 Replies
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sure. create a file in photoshop that would represent one of the fields. so basically you need to have black horizontal line every 2 pixels on a white background. you can do that by defining a pattern.
save the file.
put your videos in AE.
drag the videos into the comp.
place the photoshop file above each video.
set the video mode to Alpha matte, and the other one Alpha matte inverted.thats it.
i’ve used simillar technique to create slow motion effect.
make sure to check out https://maltaannon.com/after-effects/slow-motion/
maltaannon.com – Free After Effects Video Tutorials and more
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I don’t think the previous comment will give you actual interlaced fields.
I haven’t tried it, but this might work:
Create your comp with two layers, one is your movie you want to be your lower field, the other will be the upper.
–Choose Effects>Perspective>3D Glasses
–Specify the two layers in Left view and right view, respectively.
–In the 3D view option, choose Interlace UpperL LowerR.Note that you’ll lose half of your vertical resolution, since it’s gotta go somewhere if you’re going to mash two frames into the time space of only one.
Let us know if it works. Oh, and what are you doing with it? 3D?
-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
I think the previous one will, because each frame will have different images on the upper lines and the lower lines. Then, you render progressive (or interlaced, it doesn’t matter in this case) and view on an interlaced monitor. (On a progressive monitor, you’ll get a striped mush.)
The image will flicker between the two movies and probably give some people seizures, but it should do what you want.
Can’t speak for the 3D, but it should give the same result, which isn’t smooth interlaced motion, but flickering insanity. No? :-).
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Yeah, perhaps.
I’ll have to try that tutorial on deinterlacing slo-mo. I’m always trying to slow things down, but have yet to get great results consistently with either the built in AE fx or with ReelSmart’s Twixtor. They’re always great until that one crazed out frame that goes nuts. I guess you can’t always replicate the real thing of an over-cranked camera.-Greg.
Antifreeze Design
https://www.antifreezemotiongraphics.com -
This is true. Those effects can only work with the pixels they’re given. For example, they can’t tell the difference between a 8-spoked wheel that has rotated 180 degrees and one that has rotated 45 degrees. The vectors try to help, but I haven’t used them yet.
So they are limited, and sometimes they just can’t do the job.
Which is why it pays to shoot the action slowly right off the bat to get as much info as possible. But clients expect miracles … 🙂
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Sorry for my late response. Have been a little ill. But thanks for all te reactions! I’ll try something out in the next few days and share my experience.
By the way, I’m not going to use it for 3d. It’s just an experiment, which I hope, gives an interesting results.
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