bagong
commented
7 years ago Initial research using patches from @annulen points to the following:
- MediaFoundation support is difficult because it requires a library to bridge to DirectX / directshow (libstrmbase.a) that isn't available in stock mingw-w64 (it might be available via wine)
- using gstreamer (i.e. installing gstreamer + plugins) and enabling USE_GSTREAMER (while disabling QtMM) looks promising though: it builds without requiring additional patches. The QtTestbrowser provided in the build folder plays Youtube videos just fine.
annulen
Hi,
currently video-playback on pages using the qtwebkit-engine distributed via msys2 (alpha2, combined with qt5.9) does not work. This is kind of a known issue, but also a shame (imagine a browser that cannot play Youtube). Qtwebkit-versions built with msvc by default use Windows MediaFoundation and video playback works, but mingw built qtwebkit uses QtMultimedia, the video playback of which still uses DirectX. This interface is known not to support video playback in default system setups. Installing codec-packs, as is occasionally suggested, seems to have no effect in practice. Even if it could be configured to work, it would have to be considered a dubious and hacky "solution" likely to conflict with configurations on many Windows installs.
A suggested, but not yet implemented/published solution is to patch qtwebkit to use MediaFoundation in mingw-builds as well. Providing this falls into a grey area between package/distribution and project maintenance. Maybe the distribution maintainers and the qtwebkit maintainer (@annulen) could cooperate to enable video playback, without which a webengine is pretty useless if thought of as a general purpose engine.
Thanks.