If you are one of the ones who took the leap of faith and updated to Quicktime version 7.4.1, you may have noticed that certain codec export choices have simply vanished. Gone! Oh noes! Where is my Sorensen and Motion JPEG option? Fear not, they are still there. Like a cancer aids it’s host, Apple was just helping you out by gently pushing you in the direction of newer, more improved codecs (*cough*H.264*cough*). In 7.4.1 they added a new QT Preferences checkbox and left it unticked by default. You can restore your precious export options by going to System Preferences > Quicktime > Advanced and ticking the “Show legacy encoders” checkbox. The codecs that Apple didn’t invite to the QT 7.4.1 weekend kegger are:

BMP
Cinepak
Component Video
Graphics
H.261
H.263
Motion JPEG A
Motion JPEG B
Planar RGB
Sorenson Video
Sorenson Video3
TGA
TIFF
Video

There is a specific support doc on this issue here. And if the 7.4.1 update is causing you problems, you can always revert using these instructions.