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Wolf Tech
Participant
November 2, 2019
Answered

Rotoscope wont export properly on 4k footage composition

  • November 2, 2019
  • 3 replies
  • 2335 views

I created an AE composition with lots of layers and used a couple rotoscopes. The preview of my video in AE looks perfect, its just the way I want it. However when I export the footage my rotoscope glitches out and looses the correct path (see attached images). Stayed on the line with adobe support for over two hours and they couldnt figure out what was wrong. 

 

I create complex compositions like this every day, usually using the rotobrush tool and never have an issue. The only variable with this project is that I am using 4k footage. My PC is custom build w/ core i9 and 32gb of ram so it shouldnt be a hardware issue. I tried using multiple export settings and came out with the same results. Anyone else run into this issue? Or have any idea on how I can get around it?

 

Fyi : The screenshot of the player with a proper rotoscope around his body is from my AE preview view, the screenshot where the rotoscope cuts is head off is how it looks after exporting.

This topic has been closed for replies.
Correct answer Rick Gerard

We don't know much about your workflow or what is going on with the layers. Were you at a 100% magnification ratio and full resolution when you used Rotobursh? Did you Freeze Rotobrush? If the shot you roto is longer than just a few seconds it is always a very good idea to render a digital intermediate and replace the footage in the comp or render a track matte and get rid of the Rotoberushed layer. Are there any other effects on the Rotobrushed layer?

 

So many things can go wrong if you don't follow the right workflow. Show us the modified properties of the roto layer (select and press uu), make sure Rotobrush has been frozen, purge everything, make sure there are no other effects on the layer you roto. If it has effects you should pre-compose and run Rotobrush on the pre-comp. If the effects must be applied after the roto then you should either pre-compose the rotoscoped layer and apply the effects to the pre-comp or render the roto and replace the footage.

 

Sorry, I can't point you directly to a solution but without a lot more workflow detail and screenshots that show the whole UI and the modified properties of the layer there are just too many things that could go wrong to know where to start.

 

3 replies

patricio.pgomez
patricio.pgomez
Participant
April 12, 2022

I was having a similar issue and I solve it setting the Resolution to Full, cause when I do that the errors that I saw when I render it, appear and can correct them.

Excuse my poor english.

R
Community Expert
Rick GerardCommunity ExpertCorrect answer
Community Expert
November 3, 2019

We don't know much about your workflow or what is going on with the layers. Were you at a 100% magnification ratio and full resolution when you used Rotobursh? Did you Freeze Rotobrush? If the shot you roto is longer than just a few seconds it is always a very good idea to render a digital intermediate and replace the footage in the comp or render a track matte and get rid of the Rotoberushed layer. Are there any other effects on the Rotobrushed layer?

 

So many things can go wrong if you don't follow the right workflow. Show us the modified properties of the roto layer (select and press uu), make sure Rotobrush has been frozen, purge everything, make sure there are no other effects on the layer you roto. If it has effects you should pre-compose and run Rotobrush on the pre-comp. If the effects must be applied after the roto then you should either pre-compose the rotoscoped layer and apply the effects to the pre-comp or render the roto and replace the footage.

 

Sorry, I can't point you directly to a solution but without a lot more workflow detail and screenshots that show the whole UI and the modified properties of the layer there are just too many things that could go wrong to know where to start.

 

    W
    Wolf TechAuthor
    Participant
    November 3, 2019

    Thanks for the response! I ended up freezing the rotoscopes and that solved the problem. 

    Dave_LaRonde
    Dave_LaRonde
    Inspiring
    November 2, 2019

    It could be a problem with the footage -- 4K is typically highly compressed, and can give AE fits on occasion.  I recommend transcoding the problem clip to a lossless or nearly-lossless codec.  If it's the exact same clip, you can simply replace it in the comp to see if it fixes the problem.

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