Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: octavtirziu on 2018-02-02, 11:08:03

Title: achieving smooth animation
Post by: octavtirziu on 2018-02-02, 11:08:03: Hello,

I have recently started to test some animation. As you know animation testing is not that fast so I figured it won't be bad to ask for some advice to speed up the process.

This video is rendered at 29.97 fps, and it feels a little jagged especially the right side of the building in the foreground.

I used PT+UHD (precomputed)
GIvsAA : 16
LSM: 2
Animation (flicker-free) precision 1.0

Noise level 3% denoise 0.6.

Any thoughts on how I can improve this?

Thanks a lot!
Title: Re: achieving smooth animation
Post by: maru on 2018-02-02, 11:38:35: Do you mean the movement of the camera being a bit "jagged" or some jagged edges/flickering?
There was a discussion about fps some time ago on the forum, and it is best to use the multiplication of some standard monitor refresh rates, so for example 30fps:
https://forum.corona-renderer.com/index.php?topic=17569.msg110385#msg110385
Title: Re: achieving smooth animation
Post by: octavtirziu on 2018-02-02, 12:23:33: Thanks Maru,

30fps seems to help a bit and I will also try the motion blur suggestion form that thread.
I feel the edge in the attached screenshot is a bit shaky in particular. Might be normal due to the lack of motion blur, high contrast and relatively fast camera movement?

Is there any way to smooth this even more in AE for example?
Title: Re: achieving smooth animation
Post by: romullus on 2018-02-02, 12:34:35: I wonder how it would look if you'd use twixtor or similar plugin to convert video to 60 FPS?
Title: Re: achieving smooth animation
Post by: maru on 2018-02-02, 13:32:04: Do you have both bloom and glare enabled? I wonder if it could be the glare streaks pattern dancing around. Is it the same with B&G completely disabled?
Title: Re: achieving smooth animation
Post by: Frood on 2018-02-02, 14:09:23: Quote from: romullus on 2018-02-02, 12:34:35
I wonder how it would look if you'd use twixtor or similar plugin to convert video to 60 FPS?

Not familiar with twixtor but here is a comparison with left: ReelSmart motion blur (standard version as AE plugin) with the original 30fps and right: standard AE pixel motion frame blending 30 to 60fps (the mpg is 60fps but the left side has double frames to be able to put it in one video).

You cannot easily beat 60fps :)

Good Luck
Title: Re: achieving smooth animation
Post by: maru on 2018-02-02, 14:44:53: Quote from: Frood on 2018-02-02, 14:09:23
Not familiar with twixtor but here is a comparison with left: ReelSmart motion blur (standard version as AE plugin) with the original 30fps and right: standard AE pixel motion frame blending 30 to 60fps (the mpg is 60fps but the left side has double frames to be able to put it in one video).
Looks like it did a pretty good job!
Title: Re: achieving smooth animation
Post by: octavtirziu on 2018-02-02, 15:14:56: @maru I'll have to test without the BG to see.
@romullus I've never used twixtor, I am even new to AE to be honest, but from what I've seen on YT looks good,
@Frood the right side looks great actually i need to try it myself
Title: Re: achieving smooth animation
Post by: romullus on 2018-02-02, 15:16:50: Looks a tad smoother for me too :]
Title: Re: achieving smooth animation
Post by: Frood on 2018-02-02, 15:33:10: Unfortunately it is very scene/frame dependend. If there would be strong horizontal lines in this example, the algo would fail and produce artifacts. So it's no fire-and-forget solution :-/

Good Luck
Title: Re: achieving smooth animation
Post by: octavtirziu on 2018-02-02, 15:41:19: @Frood can you explain the process to get the result on the right. I tried to time remap it with motion frame blending pixel motion on, but I can't get that result. I am sure I am missing something.
Title: Re: achieving smooth animation
Post by: Frood on 2018-02-02, 16:02:50: I've just put your 30fps footage into a 60fps composition. The image frame should change only every 2 composition frames now (check with pgup/pgdown). Then I activated pixel motion frame blending on the layer (RMB -> Frame blending -> pixel motion, or Icon). If the content still changes only every 2nd frame you may have not activated the compositions frame blending icon? See screenshot.

Good Luck
Title: Re: achieving smooth animation
Post by: octavtirziu on 2018-02-02, 16:06:53: Thanks I'll try it, I'm a AE noob. (it worked :) )
The result with twixtor is interesting but produces some distortions on the right side.
Title: Re: achieving smooth animation
Post by: romullus on 2018-02-02, 16:27:39: AFAIK twixtor uses frame morphing, so some distortion is inevitable, although in your eaxmple, i had to look very carefuly until i noticed it :]
Title: Re: achieving smooth animation
Post by: Frood on 2018-02-02, 16:42:44: Quote from: octavtirziu on 2018-02-02, 16:06:53
some distortions on the right side.

Looks to me like some analysing radius is visible here. But nevermind, you will get enough surprises like this with AE pixel motion frame blending as well.

@Romullus: I see such distortions immediately because I hate them so much. On the other side there are enough "Woah, see how this looks badly"-posts where I just have to shrug :)

Good Luck
Title: Re: achieving smooth animation
Post by: sprayer on 2018-02-03, 08:48:57: optical flow in davinci 60fps
Title: Re: achieving smooth animation
Post by: ryan34side on 2019-11-14, 17:29:12: hi they are your settings on davinci?

thanks you so much