New subject: [Bug 55067] mfmediaengine:mfmediaengine - test_TransferVideoFrame() sometimes gets a 56% diff on Windows 10 1607+

15 Jun 2023


      https://bugs.winehq.org/show_bug.cgi?id=55067
Bug ID: 55067
           Summary: mfmediaengine:mfmediaengine -
                    test_TransferVideoFrame() sometimes gets a 56% diff on
                    Windows 10 1607+
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mfplat
          Assignee: wine-bugs@winehq.org
          Reporter: fgouget@codeweavers.com
mfmediaengine:mfmediaengine - test_TransferVideoFrame() sometimes gets a 56%
diff on Windows 10 1607+:
mfmediaengine.c:141: created
L"C:\Users\winetest\AppData\Local\Temp\rgb32frame.bmp"
mfmediaengine.c:1313: Test failed: Unexpected 56% diff
See https://test.winehq.org/data/patterns.html#mfmediaengine:mfmediaengine
This failure is quite rare, happening a bit under 1 per month:
* 2022-10-14 win21H2_fgtb-w10pro64-64
* 2022-11-23 win21H1_newtb-w10pro64-ar-64
* 2022-12-09 win21H2_newtb-w1064v21h2-64
* 2023-03-02 win1607_newtb-w1064v1607-64
* 2023-04-20 win1607_newtb-w1064v1607-64
* 2023-06-01 win1607_newtb-w1064v1607-64
* 2023-06-14 win21H1_newtb-w10pro64-hi-64
Note that it happened systematically on the debiant VM for a while but that was
probably because of a GStreamer issue (2022-11-18..2022-12-16, maybe related to
vaapi issues). What's interesting is that it was the same "56% diff" error. So
it's possible the test completely fails, gets a zero-filled BMP that still
gives this 56% diff error.
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[Bug 55067] New: mfmediaengine:mfmediaengine - test_TransferVideoFrame() sometimes gets a 56% diff on Windows 10 1607+