I have a canon 550D with magic lantern version of December 22, 2011 (the last if I'm wrong). When I test in 1920 * 1080 and recorded at 4 fps, record a few seconds and stops. Just record a few 10 seconds, I use sd hc class-Cards 10. Not that I am wrong, but I can not burn long hours. I hope I can help, because this functionality is great for me, but with recordings so short I can not do anything decent xD. Thanks in advance.
Issue #1195 resolved