Advanced Video Camera and Editing

Trim Edit Window

This window allows you to modify a single edit point. The left side of the window shows the outgoing clip while the right side shows the incoming. In addition, the trim edit window gives the advantage of showing how many frames of video are available outside the current In and Out points. Playback can be controlled using the J, K, and L key, but when Dynamic Trimming is enabled, those keys perform trims. 

  • Navigate the playhead to the desired edit point, using the Up or Down arrows.
  • Double-click the edit point, which will automatically open the Trim Edit Window. Double-clicking automatically selects the edit as a roll. However, if you select an edit tool first and then double-click, the Trim Edit Window will open, but the edit will be the tool that you selected. You can also Press Command-7 to open the Trim Edit Window. The nearest edit to the playhead will be selected and the Trim Edit Window will open as a roll edit.
  • In the Trim Edit window, the green bars above the video indicate which type of edit is selected. Press U to toggle the edit selection states and observe the green bars. A roll edit is selected when you see a green bar over both the outgoing and incoming video. A green bar over the outgoing video indicates a ripple outgoing edit. Similarly, a green bar over the incoming video indicates a ripple incoming. 
  • You can also select the edit type (roll, ripple outgoing and incoming) by simply clicking the Trim Edit window directly. When you position the cursor over the outgoing video (without clicking), the cursor will change into the ripple outgoing tool. When you position the cursor over the incoming video, the cursor changes to a ripple incoming tool. Clicking in the middle selects a roll.
  • Navigate clips using the J (reverse play), K (stop), and L (forward play). For example, when you position the cursor over the outgoing clip and press either L or J, the clip should play. Press K (or Spacebar) to stop playback. The position of the playhead will become the out-point. Press O to set the new Out-Point.
  • Now position the cursor anywhere over the incoming clip and press J, K, and L until you have found the new in-point. Press I to set the new In-Point.
  • Press Spacebar, which performs the play around function, which always loops. The loop playback enables you to make edits while the video is playing. 
  • Press the bracket keys to adjust the timing of the edit.
  • Then trim in the other direction until you’re happy with the edit.
  • Press the Go to Next Edit button (located in the Canvas' playback controls) to advance the selection to the next edit, or Press ‘ (apostrophe)
  • Press Command-W to close the Trim Edit window or move the playhead off an edit point.


Trimming Dynamically

Rather than use the above steps, you can simply press K to make an edit. This is called Dynamic Trimming. In the bottom centre of the Trim Edit window, select the Dynamic checkbox. 

You can also select Dynamic Trimming in the User Preferences window.

With Dynamic Trimming enabled, every time you press K to stop playback the edit is performed.

  • Press U to switch between ripple outgoing, roll, or ripple incoming edit

  • Press L to play the clip forward, then press K to stop at the appropriate point

  • That’s it! The edit has been performed!

Trimming Across Multiple Tracks

It's common to use more than one track of video and audio during an edit session. Thus, trimming can become a bit more complex when there's more than one track in the sequence. What you do in one track the same has to be done on the others. Otherwise clips elsewhere in your sequence could be knocked out of synch. 

You can trim multiple tracks at once, following the directions below. 

  • Navigate the playhead to the edit point using the Up or Down arrow buttons. 
  • Press V to select the edit point.
  •  Press U to toggle through the selection of edit tools (say ripple outgoing)
  • In the other track that overlaps the edit, Command-click at the head of the clip. This adds the edit on that track as part of the selection. The edit of the clip on the other track is automatically selected as a roll. 

You must ripple all the tracks to ensure that clips downstream of the edit remain in synch. Undo the roll and then,
  • Press RR to select the Ripple tool.

  • Command-click the outgoing side of the edit to select that edit as a ripple outgoing. 

  • Type + (plus) or – (minus) followed by a number for frames, and press Enter. The trim is applied. Any clips downstream should remain in synch.

Trimming Asymmetrically

Let’s say you want to trim the video and retain the alignment of a VO clip that has been laid in below. You can perform this trim as a single operation. 

  • Play around the video to determine where you want to edit
  • Press RR to select the Ripple tool
  • Click the incoming edge of the video
  • Command-click the outgoing edge of the VO clip. Now you have an asymmetrical edit selection that looks like this:

  • Drag the edit on the video track (or use the bracket keys, [ or ]. The edits between the first clip and the VO clip move in opposite directions.