The new episode of MacBreak Studio is now live and in this video Mark Spencer of Pro Video Coalition and Steve Martin from Ripple Training explain what dynamic trimming is and what it means in Final Cut Pro X. It is worth adding that it is the 300th episode and our hosts have been doing this weekly show for over 6 years, so congratulations and hope they will keep up the good work! But let's get back to dynamic trimming and in order to explain this topic Steve starts off the discussion by launching Final Cut Pro 7 in which you can find the Trim Edit window containing a "Dynamic" checkbox at the bottom. You can use it to automatically move the edit point to the playhead position when playback is stopped with the "K" key. And what about Final Cut Pro X?
"Having defined dynamic trimming in this manner, Steve turns his attention to Final Cut Pro X. He demonstrates that you can just as quickly select an edit point using the bracket and backslash keys (for Out, In, and both). Instead of a Trim Edit window, however, FCP X employs the Precision Editor, which can be opened with Control-E.
At this point you can now trim "dynamically": moving the pointer (actually a hand icon) over either side of the edit point and starting playback will play just that clip and the full handle beyond the edit point so you can see exactly where you are making the cut. When you locate it, stopping playback does not initiate the cut like legacy Final Cut - rather, you need to add the Extend Edit command by pressing Shift-X. Steve remapped this command to the N key because it's so close to the K key for stopping playback. But you don't even need to stop playback: pressing Shift-X while looping playback will execute the edit immediately."