The VideoLAN Forums

Hi everyone !

I have screen flickering using vlc and hd files with my video card ati mobility radeon hd 5650

The settings are the default .

Right now i'm trying to watch spartacus episode 2 of season 2 (not sure if this matters) and there is screen flickering .

The screen flickering isn't a lot , but it can be noticed when there are fast scenes .

Does anyone know how to fix this issue ?

I'm using windows 7 x64

Do other video output modules work any better?
http://wiki.videolan.org/WindowsFAQ-1.1.x

I have tried all other output modules

It seems that with directx instead of direct3d which is the default , there is no flickering . At least i haven't noticed any .

But why doesn't it work well with direct3d?

And also what's the difference with directx ? Will it decrease the picture quality?

Picture quality should be same with DirectX and Direct3D in case your display adapter drivers aren't buggy.

Any ideas why direct3d causes the screen flickering ?

i'm using ati mobility radeon hd 5650 windows 7 x64

flickering or tearing?

It seems that with directx instead of direct3d which is the default , there is no flickering . At least i haven't noticed any .

flickering or tearing?

Well i don't know what the difference is really . All i know is when i used direct3d as output with fast scenes , there are lines in the screen shaking . It is not lagging but there are lines shaking constantly when there are fast scenes .

When i use direct directdraw there is no such thing , but with anime with softsubs the subtitles are blurry and not sharp . Also i can notice that there is lower cpu usage with direct directdraw being used instead of direct3d . I have the latest directx drivers , i've been having this issue for some time .

I’ve figured out the problem with vlc . After unchecking accelerated video output (overlay) the screen flickering disappears . So now with direct3d output , accelerated video output disabled and gpu decoding enabled there is no screen flickering . What does exactly the accelerated video output offer and is it ok to leave it disabled?

It uses Overlay for drawing video.
http://en.wikipedia.org/wiki/Video_overlay