how to change directshow backend to phonon-vlc backend in Windows

[Seishin]

This looks like reducing the power of Qt...I'll try to find another way to support mp4 (Maybe shipping the directshow codec with program?). Thanks a lot.

[Noemie]

Hello,

I am trying to play rawvideo(not compressed) in HD 1920x1080 with Phonon VideoPlayer. It works if the videos size are small (1Go) but if not the player crash.
I check the buffering process and only around 2Mega of datas are send to the buffer.
With my videos size, I need to send more datas in the buffer(buffer size 8 Go). The problem is that I don't know how control the process.
Do you think it can be link with the backend I use?
I install DirectX and Directshow but I can't configue it. Do you know if it's possible?
I don't even knows what's the backend I use in phonon. Where can I find the information?

Tanks in avance