I have a project of about 2:40 minutes.
I used the "HDV 1080 25" preset for all comps in the project
The composition contains some nested comps with still images, and an mp3 track.
When I preivew the composition in AE everything looks fine and the sound is in sync with the animation.
When I output the comp to a movie there's a slight delay with the audio.
I tried several codecs such as: H.264 using default format options, DV-Pal, and mpeg4. all had the same problem.
I tried playing the file using VLC, WMP and the Windows Classic Media player.
Mp3 audio, that's what. AE does not like compressed audio in any way, shape or form. It never has worked well with it. Perhaps it never will. You need to convert it -- plus any other types of compressed audio files -- to either wav or aiff files.
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA