You posted the same message twice in less than 5 minutes - http://forums.adobe.com/thread/955660
You really need to give people time to read your message and compose a reply
You also need to provide DETAILS to help the other users here help you
I'm sorry I didn't mean to post it twice. I am working with MPEG files exporting in MPEG. I am working on my iMac in CS5 and he is on windows in CS3.
Ok... still no details... read below
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
For Mac http://mediainfo.massanti.com/
Once you provide the details of exactly what kind of MPEG you have for source and export... and if the Win person has the correct CODEC installed, someone may be able to help
The other post is deleted now
I don't know specifically what is causing your red flashes, but I know that I experience red flashes in my footage as a result of capture issues of my tape footage. This is one way to tell: do you see an error indicator (red circle with an 'X' inside) in the lower right hand corner of PPro at the time of the red flashes. Check this and it will help direct you in what might be going on.
The capture issues I refer to I was never able to resolve, but I believe them to be the result of dirty play head or failing tape perhaps? There may be others in the forum who could elaborate on the cause of capture issues which result in red flashes.... (if that is your issue)