Microsoft Download Center Archive

Digital Video Decoder and Multiplexer Hotfix for DirectX 9.0, 9.0a, and 9.0b (KB831937)

  • Published:
  • Version: 9
  • Category: Update
  • Language: English

This Hotfix corrects specific application compatibility issues with DirectX 9.0 changes in the DirectShow DV Decoder and Multiplexer

  • Changes made in DirectX 9.0 has the potential to affect two configurations:
    1) Print to tape using a DVCPro device with a non-MS DV encoder may result in audio dropouts or complete loss of audio.
    2) Decoding of a live or file-based DV stream with the PAL bit erroneously set in some frames may cause decoding to stutter or halt completely.

    Modifications for these issues are as follows:
    1) Alter DV Multiplexer to set SPEED field value in AAUX source pack to 1.0 when DV encoder does not set a valid value.
    2) Change to buffer size checking in DV Decoder to accept non-standard assertion of the PAL bit.

    Note: The English hotfix package (ENU) may be deployed on any language installation of the supported operating systems.
Knowledge Base Articles:


Status: Deleted

This download is no longer available on The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.

FileSHA1 HashSize
DirectX9-KB831937-x86-ENU.exeecebefaea2d7c4d8ca71291f1beea0f56168965a392 KB

System Requirements

Operating Systems: Windows 2000 Service Pack 3, Windows 2000 Service Pack 4, Windows Server 2003, Windows XP

  • This hotfix is supported on the operating systems listed above when DirectX 9.0, 9.0a, or 9.0b is installed.

Installation Instructions

    1. Click the Download link to start the download, or choose a different language from the drop-down list and click Go.
    2. Do one of the following:
      • To start the installation immediately, click Open or Run this program from its current location.
      • To copy the download to your computer for installation at a later time, click Save or Save this program to disk.