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Print screen from video black (within XenApp)

Posted on 2012-08-29
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Last Modified: 2012-09-14
Hi,

When I take a print screen from video (wmv), the printscreen is black (within XenApp client).
Please advise what to do. OS = Windows 2008 R2

J.
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Question by:janhoedt
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Expert Comment

by:Ayman Bakr
ID: 38344957
HDX mediastream multimedia acceleration, which is enabled on your plugin, causes this issue.

You must be using the online plugin prior to version 12.1. This issue has been fixed in version 12.3 and later.

See this link to download the plugin:

http://support.citrix.com/article/CTX133066

It talks about the issue in point 48
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Author Comment

by:janhoedt
ID: 38344966
This issue has been fixed in version 12.3 and later.

I haver Citrix receiver 13.3 so I think you re wrong on this one.
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Expert Comment

by:Ayman Bakr
ID: 38345056
Have you read the CTX article? I am not wrong; rather then the article would be wrong.

Anyway, to believe I am right, disable temporarily the HDX mediastream multimedia acceleration and you will see the print screen of the playing video working fine my friend.

Moreover, from which client PC (OS version) you are trying to access your session?
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Author Comment

by:janhoedt
ID: 38345500
I removed the citrix receiver and installed version 12.3 but issue is still the same.
Where do I disable the HDX Mediastream, I have no policies on my farm. I have some policies via GPO but as far as I know, it is not configured there.
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Author Comment

by:janhoedt
ID: 38345907
Note: the refresh of my video played via XenApp 6  is not ok. I look at training video's and notice that changes in the screen are not always updated (the video is showing a whiteboard, text is appearing too late -if I refresh, I see it appearing-).
Should I enable the acceleration instead of disabling it?
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LVL 23

Expert Comment

by:Ayman Bakr
ID: 38347101
HDX mediastream multimedia acceleration once set definitely will help in delivering smooth experience of multimedia including videos. The only drawback of this is resulting in a black video when you submit a print screen command.

This issue is not a property of RDS, it is an issue which was faced with old OS like windows 95, 98 and maybe 2000 and XP, where the hardware acceleration of the video adapter caused a black video when a print screen was issued. The resolution at the time was to disable hardware acceleration temporarily until the print screens were taken then it was re-enabled.

See this link about optimizing video and audio playback with a sub link for configuring the policy for HDX mediastream multimedia acceleration:

http://support.citrix.com/proddocs/topic/xenapp6-w2k8-admin/ps-sessions-ss-multimedia-using-v2.html
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Author Comment

by:janhoedt
ID: 38347119
Thanks, but how to disable hardware acceleration?
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Expert Comment

by:Ayman Bakr
ID: 38347149
In Citrix you will not disable the hardware acceleration, rather you will disable the HDX mediastream multimedia acceleration. Again the latter should be enabled via the citrix policies by default. To disable it you will need to do so from the policy again. But to take effect the client will need to log off and then log back in to Citrix.
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Author Comment

by:janhoedt
ID: 38347175
Hdx wasn t enabled. As I told you. No policies were active
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Accepted Solution

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Ayman Bakr earned 1500 total points
ID: 38347260
Then enable it and you will see the difference in the smooth run of your videos.

If you want to disable hardware acceleration just to see if it makes a difference then try it first from the client following this link:

http://answers.yahoo.com/question/index?qid=20090625093503AAjQNpS
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Author Closing Comment

by:janhoedt
ID: 38397928
ok
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