Video plays with 5.14.2 but not with 5.5.0

LinArcX

Hi. I created a WebEngine application that plays a video(.ogv) with Qt 5.14.2 and also i compiled qt 5.5.0 separately on windows 7(target > Xp).

When i compile the application and try to run it, it won't play video. on 5.5.0.

LinArcX

@LinArcX I also tested with Qt 5.6.3 and 5.5.0 prebuilt binaries that provided by qt archive website. But they can't play video.

Note that it doesn't show video on windows 7 either.

LinArcX

@LinArcX
Oh! I realized something.

If i replace the address in html page wit absolute path it'll work in Qt5.6.3 binary prebuilt.
But this time i get white page in Qt5.5.0 that i built myself and also Qt5.5.0 binary prebuilt.

LinArcX

@LinArcX
I found the solution. Just replace relative path with absolute path like this:

<video width="100%" height="100%" autoplay muted loop>
                <source src="file://D:/foo.ogv" type="video/ogg">
                Your browser does not support the video tag.
</video>

And run the app with --disable-web-security option will shows the video.

But it's not a perfect solution. Why relative path doesn't work in Qt5.5.0?

LinArcX

Also another interesting thing.

If i wana run application that uses Qt5.5.0 and deploy it on windows xp, it'll crash in video page.

But running it through DependencyWalker is fine!

Why?