Now that .ogv transcode settings have changed, all the existing 360p and 480p .ogv transcodes should be re-run, and the missing 240p transcodes added to fill the bandwidth spot from the old 360p ones.
I'll write up a bot that just runs through all the existing videos and resets their .ogv transcodes, a couple at a time.
It's important not to reset too many files at once, or the queue will clog up!
Note webm 240p and 160p have also been added.