I can’t really change the answer, it remains the same. But I didn’t see how old this thread is, yeah, I can see that the link is broken since we updated the site. You can find supported formats in our documentation here on the new website: https://borisfx.com/support/documentation/mocha/6.0.0/#_file_formats
It’s the same information we have in our help file.
Everything else still applies. As to whether or not Mocha supports whatever codec you are using on your machine, we can’t have a comprehensive list for that because we have no way of narrowing down your OS, whether or not you have quicktime installed, whether or not you have those specific codecs installed, etc. We can’t have a “comprehensive” list of codecs for movie files because it varies for every machine. Image files are much more stable for this reason across the board.
In your screenshots above, I have no way of knowing what codec you are using, but I can see it is an MP4. In general, .MP4s rarely work well in Mocha in windows, but .MOV files usually do. Basic codecs like Animation and JPEG or PNG usually work on Windows, but it really depends on your machine, whether or not you have quicktime essentials installed, and whether or not you have the proper codecs for what you are trying to use installed on your machine. But don’t expect things like ProRes to work on Windows.
In the rapidly approaching future, we are working to have Mocha AE to read whatever the host reads and not launch externally, and that should fix this issue for everyone.