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Video Playback issues on QT 5.2, Windows 7, MinGW32
On my build environment, all video playback fails with the error: DirectShowPlayerService::doRender: Unresolved error code 80040266
This video playback fails on any video file I tried including ogv, webm, mp4.
I also tried the W3Schools HTML5 Video tester in Tabbed Browser sample app and it fails with the same error when I try to play the video.
I build up an Ubuntu 13.1 environment to verify it html5 video support should work I confirmed that the W3Schools HTML5 Video player works fine on Ubuntu.
Anybody know about this issue?
How did you try to show the videos?
This page might provide some clues to the source of your error: http://qt-project.org/wiki/Qt_Multimedia_Backends
I will look into the page you suggested.
For your question, I tried playing the videos many different ways including:
Custom iframe youtube based page that loaded a webm video
YouTube view app loading the same webm video
Called the W3Schools HTML5 Video demo from Tab Browser, Fancy Browser and a custom simple QWebView app
Made a local copy of the W3Schools HTML5 Video HTML and tried many different ways
I tried the Video Player sample app to load several good html5 video formats
All of the tests resulted with the same error message.
To extend my testing, I loaded the MSVC 2012 Tool Kit into my environment and all the videos play fine when I build using this tool kit. Therefore, this issue appears so far to be isolated to MinGW 32bit build environment.
maxit last edited by
For minGW, the only available backend is the DirectShow backend (dsengine), which will not support many codecs out-of-the-box. Installing codecs for DirectShow solved the problem in my case, except when the video does not include an audio stream.
We are now testing with a MSVC 2012 build, which includes both the WMF and the DS backend. WMF supports more codecs (but might have trouble with h.264). I will post the test results when they 're done.