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lower/upper field
Hi everybody.
I’m trying to use RevisionFX Twixtor to get really slow ‘slow motion’ effect.
therefor, I tuned the ‘speed’ to 5%.
there problem is, I keep getting strange lines and “rub” at the places where the most motion, why?is it got something to do with the lower/upper field? its just the I have no idea what lower/upper field dialog means.
right now its one NONE at the footage setting and none on the Twixtor.any help guys? I’m starting to give up on it.
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15 Replies
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Is your source footage interlaced? Did you separate video fields when you imported your footage?
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I’d also add a quick RTFM for Twixtor too. Starting with the fields and see if that solves it.
All the best,
BenCurious Turtle Pro Video
Training | Editing | Support -
thanks Todd and Ben. I’ll start working on it right now.
I’ll let you guys know if its working. -
nothing guys.
chose upper field to the footage and in the render setting, AND in the Twixtor.
still looks stammer and unstable. why cant I make it smooth slow motion? -
ok, just rendered out example:
https://www.youtube.com/watch?v=WW0py-Y7-Yo
please help…I cant get slow motion without this annoying side-effect. -
It looks like it’s picking up the black edges from your source video. Try scaling the footage up a small amount, pre-composing the layer and then applying your Twixtor effect.
Remember to check off “Move all Attributes to the New Composition” when precomping.
Hope that helps,
BenCurious Turtle Pro Video
Training | Editing | Support -
I don’t think it’s a fields issue. The artefacts in your video look to me like the perfectly normal side effects of trying to slow down a piece of video 20 times. Twixtor is very clever – as are the built in frame interpolation methods in After Effects – but these technologies can’t perform miracles.If you’ve slowed down your footage 20 times, the software is having to create 19 frames out of thin air for every one that you shot. The interpolation between frames is linear, which is why you get this strange cadence.
The more you slow footage down, the more obvious the artefacts become.
In my experience, using these effects are no match for shooting with a high speed camera and we can’t really expect the results to look the same.
As a rule of thumb, reduce the shutter time as you shoot by the same factor as you wish to slow the footage down. i.e 4x slow-mo, shutter time = 1/200th. This will make the motion blur match correctly. Apart from that, it’s simply a matter of tweaking the settings until you get it as good as you can.
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ok… I tried it all, nothing works.
seems like you were right, its the crappy camera…hehe.
I used my 5M Pixel phone camera…guess its time to buy a new one?thank you guys for trying to help anyway..good day.
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I was looking at the wrong problem apparently! :o)
The other Ben was completely right when he said that 5% is an extreme amount of speed change. You’re trying to get the equivalent of shooting about 500fps just using software. With the best will in the world, that’s not going to happen.
Hope you find another creative solution for your project.
Cheers,
BenCurious Turtle Pro Video
Training | Editing | Support -
Ben.H, lets say I want to make it 5% slow motion.
is it possible with a good professional camera? (unlike the 5M Pixel phone camera I used.. hehe)
and if it is possible, maybe you can show me any camera that CAN do it?
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