Effective from Mid July 2012:

Some of you may have noticed that when you preview your muvee, half the video preview screen is black.

The issue is even more pronounced if you are using Windows XP: the entire screen could be black.

We are aware of this issue, and the recommended workaround is to:

  • UNINSTALL Windows Update KB2803821 (For users on Windows 8, 7 and Vista)
  • UNINSTALL KB2834904 (For Windows XP Users)

Other information here:


…Not long after two of those patches — KB 2803821 and KB 2834904 — showed up in Windows Update, users of Adobe Premiere Pro CS6, Camtasia Studio 8.1, and Serif MoviePlus X6 reported problems while editing videos. Images in the video preview screens were cut in half.


MS 13-057/KB 2803821 (for Windows 7) has been turning the top half of WMV videos black, either on encoding or decoding. 


According to reports, this faulty update breaks down video rendering on computers that are powered by Windows 7 and Windows XP — the screen turns black when launching specific multimedia applications.

Excerpt quoted from Microsofthttp://support.microsoft.com/kb/2803821

Known issues with this security update

  • If you use some of the following software, you may experience issues after you install 2803821. In some cases, WMV video files may fail to successfully encode or decode. After Microsoft complete the investigation, we will take appropriate action to help protect our customers. This may include providing mitigations and workarounds or re-releasing this security update.
    • Adobe After Effects
    • Adobe Photoshop
    • Adobe Prelude
    • Adobe Premiere Elements
    • Adobe Premiere Pro
    • Camtasia Studio
    • Dragon Quest X
    • Final Fantasy XIV: A Realm Reborn
    • Kandoukantan! Photomovie  (this is muvee Reveal X in the Japanese markets)
    • Rome Total War
    • Rome Total War: Barbarian Invasion
    • Serif MoviePlus
    • SKYMENU Pro
    • YouTube Movie Maker
    • muvee Reveal 7, 8, X
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