4.12.4 Sequencer Render Video Popping

4.12.4 Sequencer Render Video Popping

Hi, i’m having problems rendering out sequencer videos. What I see in the editor is not what is rendered out. The animation is not interpolated and the camera is hitching. Also, the particles go haywire and start spawning much more heavily. The blue light doesn’t flash on and off, just constantly on.

I’m using a playback rate track set at 0.1 speed. I’ve tried different machines including a titan X setup so the hardware shouldn’t be the problem. I’ve tried different rendering settings and rates but i just can’t figure out why this animation records different that what is shown in the editor.

I made sure the skeletal mesh is ticked and refresh all bones is set. I’m not sure if there is any rate update optimizations going on in the background or whatnot, but some setting needs to be set or its a slowmo bug… Any help on this problem would be great. Thanks!

Desired Look, Captured Camtasia:

Incorrect look, Sequencer Video Render:

Hi there,

Can you try to unchecked “Force Fixed Frame Interval Playback”? That is currently on by default and fixes the evaluation to frame intervals. It seems to be causing a few issues so we’ll continue to investigate but hopefully that resolves your issues for the moment.

94947-sequencer_fixedframerate.jpg

Thanks Max, that fixed the popping and animation lerping.

The other two items with the light behavior and particles spawning not matching is that a known issue being worked on? Also, if you look at the lava in the backgrounds, you can see the UV scrolling is not working correctly.

So far, sequencer is an amazing tool just some new software kinks =)

Update: The particles are working okay now, but here is the current not matching list.

  • no light visibility toggling
  • no UV scrolling
  • Cinematic Mode still loads up mipmaps, have to manually force no mipmaps to avoid blurry textures
  • rendering out uncompressed gives a slight hitch during playback

Update on the UVScrolling:

It seems there is a bug with UV panner nodes possibly getting a double slowmotion rate applied. We found if we multiplied the panner node by 10 it worked fine in the render movie. Then we have to switch back for the editor and game version to look right.

We have a workaround, but its still a bug to look at.

Hey Devero,

Can you enter the UV scrolling issue separately. It will be assigned to the appropriate Support Tech.