If you encounter a file that doesn't work with Air Video HD you can upload it here and we'll take a look. If the file is standard compliant and not broken we'll do our best to ensure it plays properly. If it's not, we'll try anyway, but the results may vary :)
If you upload a sample file, please either create a bug report, forum post or email us about the issue. We get some sample files that play without any problems so we need some context about what doesn't work for you.