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R
rnathoo
Participant
April 13, 2026

Interlaced (50i) Video Editing difference from version 25. and version 26.0.2

  • April 13, 2026
  • 1 reply
  • 46 views

We work in broadcast TV and our source material is recorded and broadcasted in 1920x1080 50i (interlaced).

Version 26 is not treating interlaced video the same as previous versions (25.xx)

  • Issue: Interlaced footage not playing back correctly when speed has been changed
  • Steps to Reproduce: Right click on shot and change speed
  • Expected Result: Smooth looking speed up shot (works fine in v25) see attached
  • Actual Result: Combing and ghosting – jerky playback in V26, see attached
  • Premiere Version: 26.0.2
  • Operating System: Windows 11 Enterprise, Version 25H2, OS Build 26200.8037
  • GPU Driver (Windows only): 31.0.101.5522

Attached is the same frame in both versions.

V26 is not playable quality wise.

We cannot upgrade our systems because for this.

 

      1 reply

      jamieclarke
      Community Manager
      jamieclarkeCommunity Manager
      Community Manager
      April 13, 2026

      Hi ​@rnathoo -   Thanks for submitting your bug report. We need a few more details to try to help with the issue. 

      What are your computer specs?  

      Which field display do you have in the wrench menu: first, second, both?

      Where are your files from are they transcodes?

      R
      rnathooAuthor
      Participant
      April 13, 2026

      Hi Jamie,

      PC Spec

      Device name  4CE443BJZ0
      Full device name  4CE443BJZ0.skytv.co.nz
      Processor  Intel(R) Core(TM) i9-14900K (3.20 GHz)
      Installed RAM  128 GB (128 GB usable)
      Device ID  CC5E537D-7694-4723-82D9-10801E842666
      Product ID  00329-00000-00003-AA498
      System type  64-bit operating system, x64-based processo

      Edition  Windows 11 Enterprise
      Version  25H2
      Installed on  ‎24/‎10/‎2025
      OS build  26200.8037
      Experience  Windows Feature Experience Pack 1000.26100.300.0

       

      Field display is set to both...but that doesn't change when using upper or lower fields are set.

       

      Files are from our server -

      Type: MXF 
      File Size: 64.87 GB
      Image Size: 1920 x 1080
      Field Type: UpperFirst
      Frame Rate: 25.00
      Source Audio Format: 48000 Hz - 24-bit - 8 Channels
      Project Audio Format: 48000 Hz - 32 bit floating point - 8 Channels
      Total Duration: 02:34:47:10
      Pixel Aspect Ratio: 1.0
      Alpha: None
      Color Space: Rec. 709
      Color Space Override: Off
      Input LUT: None

       

      MXF File details:
      Wrapper type: MXF OP1a (type: SingleItem SinglePackage MultiTrack Stream Internal)
      File generated by: Vizrt, AMF MXF Store (1.27.11)
      MPEG-2 422 Long-GOP

       

       

      jamieclarke
      Community Manager
      jamieclarkeCommunity Manager
      Community Manager
      April 14, 2026

      Hi ​@rnathoo - Since these are transcodes from the Vizrt system, are you using the SpeedHQ codec?  Do you see this issue if you create ProRes Proxy files?

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