I got lazy about exporting a title sequence, and put together a quick little After Effects script. It’s nothing fancy, but it works and might come in handy. It saves still frames from your active comp’s work area on an incremental basis (e.g. one frame every x seconds), with a filename based on the topmost active text layer at that time.
Download Incremental Screenshot v.0.0.3
Drop this script in the folder you want to save to, adjust the settings at the top to your preference, then run it from File > Scripts > Run Script File.
Works in Windows on CC2015, assume it works elsewhere but I haven’t tested it. It probably won’t make your computer catch fire, but run at your own risk.
Also, thanks to renderTom for pointing me toward saveFrameToPng!