The VideoLAN Forums

Hi,

does anyone knows why VLC playback on Linux is not as smooth as Windows when i put it on fullscreen? I test the same movie (avi) on:
- Windows XP SP2 (32bit), Latest VLC, 256MB Video, Dual Core CPU
- Fedora 8 64bit, latest VLC, 512MB Video, Quad Core CPU

When I put the video on fullscreen, I can see the pixel effect in Linux and not as smooth as the Windows version. both screen resolution is 1680 x 1050

Thanks,

Most probably a problem with your video adapter drivers being poorly optimized on Linux, or misconfigured.

I'm having the same problem as well:

o Dell 6400: has the ATI proprepriary driver
o Dell C610: has the basic whatever driver that comes with Ubuntu 7.10

I concur that on Windows VLC is awsome but not so on the Linux boxes, specially on full screen. It looks very pixelized. BTW, I had to force the deinterlace, in order to stop it "flickering". Once done, it was just as "not that great" compared to VLC Windows...

Would this be associated with codecs, or something like that?

I would like to hear from others on VLC Linux about their experiences on the video quality.

Many Thanks...

Michel Coutu

No, it is about the Video Output more than the codecs.

I'm having this problem too, and it looks like many others do as well - it's especially noticable with animation because the lines exagerate the pixilated effect. Granted, it's also a problem with my other movie player programs on linux.

Seriously, is there any way to fix this? I've tried countless things and searched long and hard, but nothing seems to work. I'm hoping that VLC, with all of its options, will have some sort of trick to fix this problem.

I'm running Ubuntu 7.10 with a Radeon9800 pro.

I'm running VLC in Windows XP Pro SP2 (0.8.6e) and Mandriva 2008 (0.8.6d) on the same (dual-boot) machine, but do not notice a difference ... certainly not pixelating.

Cpu : AMD Athlon 64 X2 Dual Core Processor 4400+
Memory : 2 GB Kingston DDR2-SDRAM PC2-5300 (333 MHz)
Graphics card : XFX GeForce 8600GT 256MB DDR3 XXX

Nvidia 169.09 drivers in Linux and 169.21 in Windows.

EDIT: only difference is the sound, I just noticed ... Window sound is better. (?)

It seems that using Nvidia controller at least secondary screen fame sync is failing.

On Fedora 8 x86_64 nVidia card with nvidia drivers (178.08beta)
Everything goes fine with Xv (no pixel)
On Fedora 8 x86 Ati x600se laptop with radeon driver -
I need to activate EXA for an "AccelMethod" in /etc/X11/xorg.conf

Section "Device"
Identifier "Videocard0"
Driver "radeon"
{...}
Option "AccelMethod" "EXA"
EndSection

In Fedora 9, this seems also the case as it can lead to pulseaudio glitches. Thoses are produced by the expenssive CPU load to decode video without EXA activated. This problem as nothing to do with PulseAudio.
http://bugzilla.livna.org/show_bug.cgi?id=1974
Note that others video players using Xv (totem) can decode video normally without EXA been needed.

One other way is too choose SDL Video Output. I have experienced a better shape for videos and less cpu consumption. (in either radeon/fglrx cases).