x64 version of Windows Media Video decoder produces incorrect video with "white sand" artifacts - by Roman Ryltsov

Status : 

  External<br /><br />
		This item may be valid but belongs to an external system out of the direct control of this product team.<br /><br />
		A more detailed explanation for the resolution of this particular item may have been provided in the comments section.


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ID 816126 Comments
Status Closed Workarounds
Type Bug Repros 0
Opened 1/30/2014 5:03:49 AM
Access Restriction Public

Description

We are seeing a problem playing back Windows Media Video encoded clips where produced output has artifacts (random individual white dots typically on top of black background, such as for example in case of arithmetic under flow with 8-bit math where negative values are not clipped and underflow to 0xFF whites).

Video decoder's output is inconsistent between Win32 and x64 versions: Win32 version works fine, and artifacts are present on x64 version only.

The problem is not limited to specific API, and is present on both DirectShow WM Video decoder (DMO) and stock 64-bit version of Windows Media Player using Media Foundation (MFT).
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Posted by Microsoft on 2/21/2014 at 4:33 PM
Thank you for your bug submission. The issue you reported appears to be on a released Windows Product. If this issue is severe, causing critical business situations or blocking your product development or deployment, please go to http://support.microsoft.com or call 1-800-MICROSOFT for assistance. For Microsoft premier customers, please contact your administrator, your Technical Account Manager, or your Microsoft premier account representative. To post a question or receive community support for developing Windows Store apps, consider posting your question or concern on the Windows Store apps forum. http://social.msdn.microsoft.com/Forums/en-US/category/windowsapps

Thank you!
Meredith [MSFT]
Posted by Microsoft on 2/21/2014 at 4:33 PM
Thank you for your bug submission. The issue you reported appears to be on a released Windows Product. If this issue is severe, causing critical business situations or blocking your product development or deployment, please go to http://support.microsoft.com or call 1-800-MICROSOFT for assistance. For Microsoft premier customers, please contact your administrator, your Technical Account Manager, or your Microsoft premier account representative. To post a question or receive community support for developing Windows Store apps, consider posting your question or concern on the Windows Store apps forum. http://social.msdn.microsoft.com/Forums/en-US/category/windowsapps

Thank you!
Meredith [MSFT]
Posted by Microsoft on 2/7/2014 at 4:42 AM
Thank you for submitting feedback on Visual Studio and .NET Framework. Your issue has been routed to the appropriate VS development team for review. We will contact you if we require any additional information. If you require immediate assistance with this issue, please contact product support at http://support.microsoft.com/ph/1117.
Posted by Roman Ryltsov on 2/6/2014 at 2:23 AM
The file is uploaded as "Roman Ryltsov + fox1_2014-01-24_19_20_55.asf", I don't know what ConnectID is.

This is a copy of the same file already attached to this feedback item.

Additional information: the bug is limited to software decoding. Whereas DXVA-enabled decoding applies you are unable to see the artifacts. Software decoding is easy to see (a) if no DXVA available for this encoding, (b) through Windows SDK GraphEdit, its x64 version, either playback or transcoding into anything else.
Posted by Microsoft on 2/6/2014 at 12:28 AM
Thank you for submitting feedback on Visual Studio and .NET Framework.

Please upload your .wmv files(ConnectID+YourFileName) in below Workspace. The password is BpJwmVwGDjk$IIXj.

https://sftus.one.microsoft.com/choosetransfer.aspx?key=0486b551-c062-433e-9d89-bb8a37ac1017

Please submit this information to us within 4 business days. We look forward to hearing from you with this information. If you require immediate assistance with this issue, please contact product support at http://support.microsoft.com/ph/1117.
Posted by Microsoft on 1/30/2014 at 5:52 AM
Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com)