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Bacuba13
Bacuba13
Inspiring
February 24, 2026

Image Tearing When Live Streaming from Black Magic Streaming Encoder 4k - Premiere Pro 25/26

  • February 24, 2026
  • 1 reply
  • 35 views

As the title states, when Live Streaming my edit with the Mercury Playback going to the Black Magic Streaming Encoder 4k, the image tears on the the live stream. Locally evrything is fine, but there is a weird handshake issue with the BMD Streaming Encoder and Premiere Pro.

I tested the same setup with Davinci Resolve and everything worked flawlessly. I then tested the BMD Streaming Encoder 4k with my laptop and Premiere and the image tearing issue still persisted.

 

The only quasi resolution was to force VSync in the nvidia control panel for premiere pro, but that caused other issues like screen blips on the live stream during scene changes.

My timeline was at 23.98 for one project and 24 for another. I had issues with both. The BMD Streaming Encoder did match the timeline timebase of 23.98 or 24. When changing the BMD Streaming Encoder to 60hz, the horizontal image tering went away, but then playback juddered on the live stream because of the mismatch of timebase. 

I do not have this issue with the Atem Mini Pro. 

I’m logging it here to hopefully see if Adobe can update premiere to resolve the issue.

How to re-create the problem:

  • Connect a BMD Streaming Encoder 4k or Web Presenter
  • Tell Mercury Playback to play on that device
  • Set the timebase of your project to 24 or 23.976
  • Make sure the BMD Streaming Encoder 4k or Web Presenter is set to the correct hz to match 24 or 23.976 in Windows Display settings
  • Live stream playback on chrome or any browser, and you will see the screen tearing. 

My System:
Windows 11 Pro
96GB Ram

5090 (latest nvidia studio drivers)
Monitor 1 4k @ 165hz
Monitor 2 4k @ 240hz
*having the monitors at the same hz does not make the problem go away, nor turnign of gsync or HAGS*

Thanks so much if anyone has a solution and please mods send this to adobe to be fixed!

    1 reply

    R
    Community Manager
    Rach McIntireCommunity Manager
    Community Manager
    February 24, 2026

    Hi ​@Bacuba13 ,

     

    Hi ​@Bacuba13 ,

     

    Thanks for the detailed report — this is very helpful.

     

    I’ve logged this as a bug so we can investigate the handshake behavior between  Premiere and the BMD Streaming Encoder 4K when using Mercury Playback for external output at 23.976/24 Hz.

     

    Would you be able to provide a short screen recording showing Premiere playing back correctly locally while the live stream in Chrome shows the tearing, along with Windows Display Settings visible to confirm the refresh rate of the BMD device?

     

    It would also help to know the exact Premiere version you’re running (25.x or 26 beta), the Blackmagic Desktop Video driver version, whether Mercury Transmit is set to 8-bit or 10-bit, and whether hardware accelerated encoding/decoding is enabled in Preferences.

     

    If you can share that recording, I’ll attach it directly to the bug to help with reproduction and prioritization.

      Bacuba13
      Bacuba13Author
      Inspiring
      February 24, 2026

      Hey Rach,
      ​@Rach McIntire 

      Thank you SO much for reporting this as a bug and taking a look into fixing this!

      Unfortunately because of the high client profile nature of the projects I work on (plus NDA), I cannot share a screen recording of the issue or screenshots. But it’s basically like this screenshot, on multiple horizontal lines of the image that moves back and forth when playing down the timeline.


      The refresh rate of the Windows Display Settings for the BMD always matched my timeline timebase. So for ex, if my timeline is set to 23.98, the hz in the display settings for the BMD would be set to 23.98hz. Same goes for 24 or any other frame rate. The timeline timebase is what will determine the hz refresh rate of the BMD in the Windows Display Settings.

      I’m running Premiere Pro 26 (Build 72) and Premiere Pro 25 25.6.4 (Build 5)

      The BMD driver version is the latest 4.2. 

      Mercury Transmit was set to 8bit and hardware acceleration was set to on for both encoding and decoding. I tried it off, but the problem was still there after a few seconds.

      I hope this helps! Thank you again!!

      In the meantime I’m going to try using the Osprey Talon 4K-SC. As stated before, this problem is not present with the ATEM Mini Pro when live streaming. I asked Black Magic Support why that is, and they couldn’t really give me a straight answer. They said it’s a completely different product vs the Streaming Encoder 4k, so it may just have more buffer to stabalize the image.

      Also, both the ATEM Mini Pro and the Streaming Encoder 4k work flawlessly in Davinci Resolve when live streaming. I only state this to help show that it is only present with Premiere Pro.

      It also happened on my laptop with different hardware, but the same versions of Premiere.

      The codec used in my timeline is ProRes 422 LT. I tried ProRes Proxy with the same horizontal tearing result.

      Please note: The image plays back fine locally and in the Web Presenter monitor. So what this means is the signal is perfectly fine, it’s when it handshakes with Premiere to anothe destination like live streaming.

       

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