Can't play video on windows xp

LinArcX

@Bonnie
What aboot this:

https://forum.qt.io/topic/59838/building-qt-from-source-on-windows/7

hskoglund

Hi, one other thing I saw in the dependency walker's output, it wants the Qt files from another Qt directory on your XP machine:
c:\tools\neovim\neovim\bin

Make sure that this other version exists and is also Qt 5.6.3 Release for MSVC 2013.

LinArcX

@hskoglund
Hello. I have some questions:

Why application loads these .dlls from that weird directory instead of current directory of my application? (I used windeployqt)
Lets say, i fixed it. Do it fix main issue?(Showing video)

mrjj

@LinArcX
Hi
1: Ask Windows :) It is its run time loader that controls this.
2: It could fix it. However, the normal effect of mixing Qt version is crashes so
dont get to much hope up.

LinArcX

@mrjj I mean why it didn't look in current directory first, if it looked why doesn't load it? Since those dlls exists beside main exe file.

I noticed that on windows xp that doesn't have this directory(c:\tools\neovim\neovim\bin\), DependencyWalker complains that it can't find dlls:

`

mrjj

@LinArcX
Well back in the Xp days they didn't load better i guess.
In the newer version of windows, you can add a manifest file to tweaking it and at some point they also allowed
side by side loading of Dlls with same name etc.
https://docs.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order

well (c:\tools\neovim\neovim\bin) seems just to be
https://github.com/neovim/neovim
but it does uses Qt for GUI .

Hmm so the DSENGINE cannot find its support DLLS ?
those missing files are in your app folder ?

Is there a reason you cant use a virtual machine with Xp (or real pc ) to install Qt5.6
and what ever compiler you wish and simply compile and xp version for xp.
And compile a win 7+ on win 7 ?
Im not 100% sure you can have a one .exe that works on both as the backend changed alot.

LinArcX

@mrjj

you can add a manifest file to tweaking it and at some point they also allowed side by side loading of Dlls with same name etc.

It works on xp?

side by side loading of Dlls with same name etc.> those missing files are in your app folder ?

Exactly.

Is there a reason you cant use a virtual machine with Xp (or real pc ) to install Qt5.6 and what ever compiler you wish and simply compile and xp version for xp.

I tried to compile qt 5.5.0 on windos xp.(It's a virtualbox machine). It complains about some functions that only exists on x64 architecture.

Im not 100% sure you can have a one .exe that works on both as the backend changed alot.

So, you mean i should compile whole application in each os separately?

mrjj

@LinArcX said in Can't play video on windows xp:

@mrjj

you can add a manifest file to tweaking it and at some point they also allowed side by side loading of Dlls with same name etc.

It works on xp?
I think so but not sure if it can help you load the right dlls.
https://docs.microsoft.com/en-us/windows/win32/sbscs/manifests
I tried to compile qt 5.5.0 on windos xp.(It's a virtualbox machine). It complains about some functions that only exists on x64 architecture.
But Qt5.6 still supports Xp so why compile your self? You add something ?
So, you mean i should compile whole application in each os separately?
Well that is how a few people I know still do - to have xp version. Its only SP3 Xp's that works but I guess
all remaining xp's are patched.
It might be less work than to make sure it links to older directX in newer windows. (if thats even possible)

LinArcX

@mrjj said in Can't play video on windows xp:

But Qt5.6 still supports Xp so why compile your self? You add something ?

Which version of 5.6? 5.6.3?

mrjj

@LinArcX
Yes. I saw someone write he used that version in 32 bit and it worked for
Xp. I didnt personally tried it, though.

LinArcX

I have same issue with playing video with QtWebEngien and QtQuick. Both of them can't play video on windows xp.

LinArcX

This is the output of running QtWebEngine application on real hardware(Windows xp):

00000001	0.00000000	[2736] QFactoryLoader::QFactoryLoader() checking directory path "D:/release_webengine/platforms" ...	
00000002	0.00167815	[2736] QFactoryLoader::QFactoryLoader() looking at "D:/release_webengine/platforms/qwindows.dll"	
00000003	0.01299774	[2736] Found metadata in lib D:/release_webengine/platforms/qwindows.dll, metadata=	
00000004	0.01299774	[2736] {	
00000005	0.01299774	[2736]     "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",	
00000006	0.01299774	[2736]     "MetaData": {	
00000007	0.01299774	[2736]         "Keys": [	
00000008	0.01299774	[2736]             "windows"	
00000009	0.01299774	[2736]         ]	
00000010	0.01299774	[2736]     },	
00000011	0.01299774	[2736]     "className": "QWindowsIntegrationPlugin",	
00000012	0.01299774	[2736]     "debug": false,	
00000013	0.01299774	[2736]     "version": 328961	
00000014	0.01299774	[2736] }	
00000015	0.01299774	[2736] 	
00000016	0.01299774	[2736] 	
00000017	0.02331553	[2736] Got keys from plugin meta data ("windows")	
00000018	0.05049497	[2736] loaded library "D:/release_webengine/platforms/qwindows.dll"	
00000019	0.05494274	[2736] QFactoryLoader::QFactoryLoader() checking directory path "D:/release_webengine/platformthemes" ...	
00000020	0.05584676	[2736] QFactoryLoader::QFactoryLoader() checking directory path "D:/release_webengine/platforminputcontexts" ...	
00000021	4.12752199	[2736] class QWindowsEGLStaticContext *__cdecl QWindowsEGLStaticContext::create(class QFlags<enum QWindowsOpenGLTester::Renderer>): Could not initialize EGL display: error 0x3001	
00000022	4.12752199	[2736] 	
00000023	4.12766695	[2736] class QWindowsEGLStaticContext *__cdecl QWindowsEGLStaticContext::create(class QFlags<enum QWindowsOpenGLTester::Renderer>): When using ANGLE, check if d3dcompiler_4x.dll is available	
00000024	4.64033127	[2736] QFactoryLoader::QFactoryLoader() checking directory path "D:/release_webengine/styles" ...	
00000025	4.95253468	[2736] QFactoryLoader::QFactoryLoader() checking directory path "D:/release_webengine/accessiblebridge" ...