Audio Issues with MPEG4 Video in Premiere Elements

Premiere Elements seems to be a dream ticket for a specific department's needs at our company because of its ability to import, edit and export WMVs, MPEG4s and FLVs.

However, after importing MPEG4 video files into a project the audio becomes full of glitches. Repeatable glitches. Pops and distorts which occur in the same places again and again. These glitches then appear when the clips are exported.

I've tried the same on three different machines - one AMD, two Intel, 2 with on-board audio, one with a separate sound card, and they all do the same thing.

I thought it might be a sample rate issue - because for some reason the seuqnces in Premiere Elements are set to 48Khz 32-bit when the audio is 48Khz 16-bit. Then again I thought 16-bit was kind of the standard.

Or is it something to do with the KIND of MPEG4 I'm importing? When exporting MPEG 4s from FCP you can do MPEG4-Basic, MPEG4-Improved... these files are from the public who are rather hard to get to conform to standards...

And help massively appreciated.


Ben