When trying to edit an MPEG4 - did activate the codec - there is no sound. When I play the fie on Window Media Player and VLC Player tye sound is perfect. Please assist. I'm using Windows 7, Core i7
What is the file format and source, use GSpot or MediaInfo to analyse the mp4 and come back with the results - a good screen shot of the GSpot window after analysis would be ideal, if not post the results.
Please read this post - it you gives you more information about asking questions.
If possible can you upload a small sample of the an mp4 from this source somewhere eg Dropbox or a similar file sharing/transfer site so we can have a look at it.
That error message suggest there is a problem with the audio in the mp4 - was this error from MediaInfo?