I'm using the latest version of Premiere Pro CC. I'm trying to reverse the speed of a clip on my timeline. I hit (command) R and select the checkbox for "Reverse Speed". I try to playback the sequence and it is frozen. If I try and reverse the clip using "Time Remapping" the keyframe will only move about 1/10th of the way from the beginning of the clip to the end. FYI the filetype for the clip is an .MXF straight from a C300. Can someone explain why this is happening?