I got a number of openers, titles and so on made on PC, .mov, TGA-inside w/ alpha-channel. I batch-converted them in ProRes 4444 by MPEGStream Clip, imported in FCP 7 and to my surprise found all of them came without alpha-channel. Then I tried to convert them w/ QT7. For some twisted reason QT7 adds alpha channel only if I force it to ignore gamma correction. Strange stuff.