Seems, the bug is in this two patches:

   - 36549dbe148055d6ecf98952b05b4ff2310fe491 - DirectShow: use the EVR in
   the renderer control.
   - c7397523e77578cf8f09ba3258791f68c34e2e5f - Windows: Improve EVR
   presenter.

I have added this info to bug-tracker...



2016-04-29 11:51 GMT+03:00 Denis Shienkov <denis.shien...@gmail.com>:

> I have checked it again on other PC and see following:
>
> 1) If I compile the QtMultiMedia from the 5.6 branch (self-compiled with
> the Qt 5.6.0) and there are the same issue!!!
>
> 2) But if I use QtMultiMedia from the 5.5 branch (self-compiled with the
> Qt 5.6.0), then this issue does not exists!!!
>
> PS: I have added this info to the bug-tracker too
>
>
>
> 2016-04-28 22:25 GMT+03:00 Marc Mutz <marc.m...@kdab.com>:
>
>> On Thursday 28 April 2016 20:24:45 Denis Shienkov wrote:
>> > I'm currently have checked it with the Qt 5.5 and have no this
>> > problem... So, the regression was introduced in Qt 5.6...
>> >
>> > So, Qt-developers, do you checks your code of QtMultimedia on
>> > regressions when you accept a patches, and before releasing? I do not
>> > understand, how is it possible to introduce this epic regression??? How
>> > is it possible to work for a salary and to make such bugs (and, please
>> > do not say that it is open source)?
>>
>> git bisect start origin/5.6 origin/5.5
>>
>> --
>> Marc Mutz <marc.m...@kdab.com> | Senior Software Engineer
>> KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company
>> Tel: +49-30-521325470
>> KDAB - Qt, C++ and OpenGL Experts
>>
>
>
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