Check out this video about the new features found in Character Animator (2.1)
Wondering...is there a blade tool or a quicker way to edit in the timeline. It would be nice to have a quick way to cut mouth frames and replace them. Maybe we can add that to suggestions for the next update...
Just press alt and click on where you want to split it. You can also use / and click to split it in half.
You can split recordings using “Edit / Split”, then replace a viseme by right clicking on it and selecting the new viseme you want, For more details see Record and playback scenes in Adobe Character Animator