VLC lagging while running HD videos

My vlc player keeps lagging while i play hd videos. To be more especific, it has been lagging in mp4 files with 720p and 1080p.

It keeps stopping like 10 seconds to 10 seconds. The stopping time is less than 1 second.

System : ubuntu 12.10, CPU intel i3, graphics are ati mobility radeon hd5145, 512mb dedicated. It's a laptop, asus K52JB

I hav open source ati driver installed.

Can anyone help me?

Solution 1:

I had kind of the same issue, here's how I fixed it:

In VLC, I went to / Tools / Preferences / Input & Codecs / Codecs ... and set "Skip H.264 in-loop deblocking filter" to "All".

And it worked just fine (it seems that I lost a bit in image quality, maybe you can try other settings for "Skip H.264 in-loop deblocking filter".

Remember to restart VLC.

Source: http://crunchbang.org/forums/viewtopic.php?id=10510