I have a file, which uses ac3 codec. I've pld the file before on my old pc and it worked fine, i'm sure what codecs i had though.

When i uninstall the ac3 codec, the file runs smoothly, but without any sound, but when i install it, the video is very jearky at some parts of the film, including the sound, which aren't random, they're at specific parts in the film, i've tried installing different codec packs but it's no good.

The file is stored on a cd, at first i thought the cd was scratched, but it's fine, i even copied it to my hard disc without any problems.

Codec used:


Kazzalite Codec pack
Sld codec pack
divx only codec
ac3 sound filters

Thanks In Advance