Windows 7 guest wmv playback stopped working

Discussions about using Windows guests in VirtualBox.
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TheOtherPhilC
Posts: 51
Joined: 28. Jun 2009, 21:20
Primary OS: MS Windows 7
VBox Version: OSE other
Guest OSses: MS Windows 7

Windows 7 guest wmv playback stopped working

Post by TheOtherPhilC »

What can cause Windows Media Player on a Win7 guest to refuse to play the sample video? (wildlife.wmv)

VBox 3.1.0
Win7 x64 RTM ultimate host.
Guests:
Win7 x64 RTM ultimate
Win7 x32 RTM ultimate
XP Pro SP2

The video played fine on both W7 guests when I first created them last week. Now, the media player plays sound but no video. It displays a small still picture instead. The troubleshooter indicates the likely cause as a missing codec. All codecs are installed. (Compared the installed list to the host system)

Plays perfectly on the host. I downloaded and installed WMP 11 on the xp guest, and the video now plays perfectly there.

I am trying to rack my brain on the possible things I have done to both Win7 guests, and the only thing I can recall is re-installation of guest additions, and increasing CPUs to 2. Is it possible one of these killed the video capability?
Perryg
Site Moderator
Posts: 34369
Joined: 6. Sep 2008, 22:55
Primary OS: Linux other
VBox Version: OSE self-compiled
Guest OSses: *NIX

Re: Windows 7 guest wmv playback stopped working

Post by Perryg »

Did you install the guest additions in safe mode?
TheOtherPhilC
Posts: 51
Joined: 28. Jun 2009, 21:20
Primary OS: MS Windows 7
VBox Version: OSE other
Guest OSses: MS Windows 7

Re: Windows 7 guest wmv playback stopped working

Post by TheOtherPhilC »

Perryg wrote:Did you install the guest additions in safe mode?
Several times.
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