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K
Kayero5ED7
Participant
October 10, 2022
Question

Choppy Video When Slowed Down

  • October 10, 2022
  • 2 replies
  • 2043 views

Hi Community,

I have an unusual problem with my footage shot on a Sony FX3 when slowed down.

The video was shot in 4k at 60fps but when slowed down in a 24fps sequence, what I get is a weird jittery choppy result. This has never happened to me and I have shot videos using same camera a thousand times before without this issue.

What suddenly went wrong? It went from one day to the next and I haven't done anything I hadn't done before. In fact, I compare projects from the previous days to the new ones and I can't see what changed. Someone please help.

 

Cheers!

Kay

    This topic has been closed for replies.

    2 replies

    J
    Jorsh304859130o9e
    Participant
    December 7, 2023

    I'm having this exact same issue 😞 

     

    Ishan Y
    Community Manager
    Ishan YCommunity Manager
    Community Manager
    October 10, 2022

    Hey Kay,

     

    Sorry about the issue. Could you let us know what is the clip speed and Time Interpolation set to? Is the playback choppy in the sense that it's skipping frames or does it seem like a preview rendering issue?

     

    Thanks,

    Ishan

      K
      Kayero5ED7Author
      Participant
      October 12, 2022

      Thank you, Ishan for the response. So mostly I shot in 4k 60fps and 1080p 120fps. I slowed the 4k 60fps footage down to 40% using Frame Sampling. I tried Optical Flow and Frame Bending as well when I was constantly getting a choppy clip. Still the same result. However, when I slow down my 1080 clip by 20%, I get a desired smooth result.

      I have reset my camera to its default factory settings about 3 times aready. I have changed memory cards. Nothing seems to point to the camera, so I thought maybe it's just Adobe.

      S
      Community Manager
      Sumeet Kumar ChoubeyCommunity Manager
      Community Manager
      October 13, 2022

      Hello Kevin,

      I have a Microsoft Windows 11 Pro. Version 21H2

      System Name: MSI

      System Model: Raider GE77HX 12UHS

      System Type: 64-bit operating system, x64-based processor

      Processor: 12th Gen Intel (R) i9-12900 HX, 2300Mhz, 16 Core(s), 24 Logical Processor(s)

      Physical Memory (RAM): 64gb

      I hope this is all the info you need.

       

      Thank you,

      Kay


      Thanks for the details, Kay. Would you mind sharing a video showing the choppy preview that you are getting after doing Speed/Duration changes? Also, try interpreting the frame rate to 24fps for that 4k 60fps clip (right-click on the clip in the Project panel > Modify > Interpret Footage > set Assume this frame rate to 24fps) & then creating a new sequence from it to check if playing properly.

       

      Thanks,

      Sumeet

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