Can you generate multiple transcoded files per original file?

I'm trying to output multiple transcoded files per original file, but it doesn't seem to be working. I enabled video_presets and selected mp4, ogv and webm from the presets, and adjusted them slightly (force single pass, as my ffmpeg config seems to choke otherwise).

Rather than have all three jobs fire off on submission, what I find is that only the mp4 transcode file is created. I checked the video_queue table, and only the mp4 file is entered. Same with video_output. No other entries are made into file_managed.

Is video supposed to allow for multiple transcodes of the same original file?