I have two problems

1) I created a mp4 and there is a timelag between the audio and video - the audio is leading - it's only just noticable

I imported the .mp4 into LE to confirm this by looking at waveforms of the original and the mp4

the original looks OK

but then I met problem 2

2) On the mp4 I could see the waveform - on the original I can't - I can see the volume and pan - but even though I turned the wave form on - I couldn't see it

The original is an avi I created by exporting the original as a fused file, running defrag via virtualdub

and importing it back into LE

Can anyone help please ?

Hi Draske

The codec mismatch might be right - when I played it on a quicktime player I got the delay

with nero showtime it was better although I'm not sure it's spot on, when I imported into  LE it look OK - I put the original and the mp4 side byside and played them and there was no "echo" - so they where in sync

The export settings are 640 x480 progressive, 25 FPS, 3.8 Mb peak bitrate, audio 48Khz, stereo 16bit MPEG-4128 audio bitrate

The audio codec is PCM

Now what ? Does that mean that I can't play it back in quick time ?

I wanted to upload it to Vimeo - I supposed I can do that and see how the sync works there

Any idea why I can't see the waveform on the original avi ? - the audio plays back ok

Perhaps because it's an output from virtual dub ? It's a very big file 24 GB so I don't know how it's encoded