About videos, I have a800, 100c.
My experience differs, no crash
With 1751 full alpha and a 8g Kingston class4 it only takes a 3 second vid, quits,
does not crash. Setting quality to 10 made no difference, maybe 4 seconds.
With 1791 full alpha on 8g Dane-elec class10 seems OK,
have made 30 second vid, not longer, but think it would be OK
Quality setting unchanged (84?)
dave