Video playback / Directx problems

[doveman1]

Has anyone got youtube videos playing normally in Virtualbox over a remote LAN connection?

I'm connecting from a Win7 guest to a Win7 host via RDP and running an XP guest on the host.

With 2D Acceleration only, I get video and audio but the audio's rather crackly and out of sync. If I make the video fullscreen, IE throws a wobbly and says the page crashed. Doing the Directdraw tests in DXDiag, the first one seems OK, but the second one (bouncing square in window) is very jerky, whilst the 3rd one (bouncing square fullscreen) is better but still not smooth.

With 3D Acceleration as well, the audio's much cleaner but still out of sync and it still crashes IE if I make the video fullscreen. The Directdraw tests are much the same, but as soon as I tried the Direct3D tests it crashed Virtualbox, leaving it marked Aborted.

I also tried connecting over VRDP directly from the Win7 guest to the XP virtualbox, but then I get no audio at all and with both 2D or 2D and 3D acceleration everything is much more sluggish, like scrolling webpages, compared to RDPing into the Win7 host and then accessing the Virtualbox from there. I thought Virtualbox had some video compression/acceleration features so I was rather disappointed that it was worse.

[doveman1]

Well I fixed the fullscreen problem at least. I had to disable Hardware Acceleration in Flash and now it doesn't crash IE when going fullscreen. Had to do the same in the Win7 host as it was crashing IE there when going fullscreen as well.

The video playback's still terrible in Virtualbox over VRDP though. It's better with Win7 RDP but still not near good enough.

[doveman1]

I think there's a sync problem even using Vbox locally (i.e. not over a LAN connection). I tested with the sound_sync_test clips from http://editorsean.com/blog/49-audiovideosynctest and I'd say it sync's when it says "4 frames after audio". I haven't found an equivalent test clip on youtube so can't say what the exact delay is with that but I imagine it's similar. This is a different PC to the one I was testing Vbox over RDP/VRDP on but hopefully if I can get things perfect on here I can translate that to the other PC.

Does anyone know what the right settings are for perfect audio/video in an XP guest. At the moment I've got only 2D acceleration enabled and the DirectDraw tests seem OK, if maybe a little faster than they should be. It doesn't make any difference if I Disable DirectDraw Acceleration. I can't compare them on the Win7 Host as Dxdiag doesn't have the tests on that. Log attached.