[Pete] “16-bit integer (Little Endian), Stereo, 48.000 khz”
These pieces of info relate to the audio encoding. There is nothing mentioned about the video CODEC. Import the file into AE. In the Project Window, select the file and press one of the modifier keys, CTRL, ALT, CTRL. Sorry but I can’t recall the exact key combo. Once you’ve hit the jackpot, you’ll get some info on the four-character (not the foul word) code for the CODEC. That should give you a better idea.
HTH
Roland Kahlenberg
broadcastGEMs
Customizable animated backdrops with Adobe After Effects project files