I've tried every configuration and file extension I could think of with no avail. All of my audio, image sequences, videos and external files are perfect outside the program. The moment I bring the audio into Animate CC, however, the audio begins to drift over time, upwards to a second before the images.
For any future user with this same issue, I did manage to discover a workaround. I broke up my audio file into parts. Instead of rendering a single audio file, I divided it up into 23 separate audio renders worth 1,000 frames of animation. By doing this, the audio drift would be reset to zero at every 1,000 frames.
Not the ideal solution I was looking for, but it works for the time being and I can continue working.
Thanks very much for the update, mate!
I was about to mention something else yesterday, but didn't want to give unspecific information in the first post.
Just because of the nature of my work I have not experienced what you describe, but I have often come across the opposite:
Exported audio gets progressively longer than the image sequence. I've always thought it had to do something with the way it renders audio out - a feature last available in CS6 - and not how it maps audio samples onto frames.
For a 4-5 min. animation the offset can get beyond 1 second.
What I do in this case is in Premiere I just force audio length to be exactly the same as the image sequence and all matches perfectly in the final video render.
Another thing that I wanted to mention is that if you use SWF previews, I have noticed that MP3 does not sync well and your previewing will get progressively inaccurate. ADPCM has other issues but syncs well in previews.
Again, the nature of my work is such that I use tiny sound effects and longer WAV voice overs, but they are cut, never minutes long, that is why I have not experienced what you described.
Thanks for sharing. Very useful information.
Good luck with your work!
NT
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