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S
Seizo
Participant
January 27, 2020
Answered

Trapcode Particular rendering slower in later parts of composition

  • January 27, 2020
  • 3 replies
  • 6890 views

I've been trying to render out a video that's 51 mins long and optimizing it where I can. I had a lot of precomps that I prerendered out then imported back in as vids with alpha, and trimmed layers I didn't need which helped, but the render time was still incredibly high. Turns out particular is what's causing it but I can't quite grasp why.

 

I have 4 layer emitters generating particles at a rate of between 70 and 300/sec. I tried resetting particular entirely and using just one default emitter, and even then it renders well enough early on in the video but if I skip about 30 mins in my render time is severely reduced. I've also tried setting particular to render with GPU streaming but to no avail. This carries over to Media Encoder of course. The render time started at about 14 hrs and after reaching that number the time remaining has now jumped to 53 hours. Still increasing as I type this. Any ideas as to why this is occuring? I'd love more troubleshooting ideas

 

Im working on an Alienware 15 R3

intel i7 core processor

16384MB RAM

Nvidia GeForce GTX 1070 graphics card

This topic has been closed for replies.
Correct answer Mylenium

Aside from what the others already said, figure this: Just because a particle is "dead" or invisible doesn't necessarily mean its underlying calculations and data cease to exist. Certain combinations of settings could cause millions of extraneous particles being calculated even if they are never visible. And yeah, attempting to render the whole 51 minutes without splitting up the segments is kinda crazy in the first place.

 

Mylenium

3 replies

Szalam
Community Expert
SzalamCommunity Expert
Community Expert
January 28, 2020

I'd recommend making a different little video for each song and put it all together in Premiere Pro. It'd be a lot more interesting to look at than the same thing for an hour.

    S
    SeizoAuthor
    Participant
    January 28, 2020

    Yknow, that's actually a really good idea. I like the sound of that more as well, thanks

    Mylenium
    MyleniumCorrect answer
    Legend
    January 28, 2020

    Aside from what the others already said, figure this: Just because a particle is "dead" or invisible doesn't necessarily mean its underlying calculations and data cease to exist. Certain combinations of settings could cause millions of extraneous particles being calculated even if they are never visible. And yeah, attempting to render the whole 51 minutes without splitting up the segments is kinda crazy in the first place.

     

    Mylenium

      S
      SeizoAuthor
      Participant
      January 28, 2020

      I had a feeling that might be the case but I really couldn't be certain and didn't find many leads to go on expressing as much. Makes sense, thanks. Also I get it lol I haven't been using Adobe's products or doing this for very long, I'll make sure to chop up my work in the future

      Roland Kahlenberg
      Roland Kahlenberg
      Legend
      January 28, 2020

      51 minutes is an extremely long timeline for AE work. Look at ways where you can loop Particular. Then use pre-rendered loops to composite in AE or Premiere Pro.

       

      Use Adobe Premiere Pro to do basic compositing, based on the renders from AE.

       

      Get in touch with Red Giant to ask if there are preferred settings you can use to speed up rendering of VERY VERY LONG AE timelines.

       

      Generally, to speed up rendering, you will want to disable Comp Panel updates. Your system has 16 GB of RAM; which isn't much. It's very likely that AE/Particular is not clearing/cleaning up RAM efficiently. Hence, as more frames are being rendered, there is less RAM available for processing. When there is insufficient RAM, data from RAM is temporarily stored in the cache and then re-read back into RAM - this slows down renders considerably.

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        S
        SeizoAuthor
        Participant
        January 28, 2020

        Thanks I'll try making those adjustments right now 🙂

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