Sorry if this was already asked. (or even it's already done, i have Canon 650D so i can't test)
It would be great to lower, or even have ability to set custom bitrate value in mb/s. Cause i really don't think that everybody needs 47.5 Mbps video bitrate. it's more than enough 20 Mb/s :) it will save more space in card and nobody will see difference in quality :)
Also this would allow people with slow cards to set value which would be good for their card write speed.
This is already available in the form of the bitrate multiplier. Set to a value < 1X. Experiment with a few files to see why multiplier gives you the bitrate you want.
http://wiki.magiclantern.fm/userguide/#bit_rate
Oh, sorry for topic then... :(
Thanks.. really wanna try this awesomeness in my 650D ...can't wait until safe version :)