Manual Lip-syncing
You can manually create the lip-syncing for your scene by selecting which mouth drawing should be exposed at each frame of your character's dialogue. For this process, you will be using the Sound Scrubbing functionality, which plays the part of your sound track at the current frame whenever you move your Timeline cursor, allowing you to identify which phonemes you should match your character's mouth to. You will also be using drawing substitution to change which mouth drawing is exposed at every frame.
- In the Playback toolbar, enable the Sound Scrubbing button.
- In the Timeline view, drag the red playhead along the sound layer waveform.
- When you reach a frame where a mouth position should go, for example, an open mouth with rounded lips for an "oh" sound, click on that frame on your mouth shapes layer.
- In the Parameters section, staying on your mouth shapes layer, place your cursor on top of the drawing name (often a letter) until it changes to the swapping pointer.
- Pull the cursor to see the list of mouth shape names and choose the one you want. The current drawing automatically changes to the new selection.
- In the Playback toolbar, click the Sound Scrubbing button.
- In the Timeline view, drag the red playhead along the waveform of your sound layer.
- When you reach a frame where a mouth position should go, for example, an open mouth with rounded lips for an "oh" sound, click on that frame on your mouth shapes layer.
- In the Drawing Substitution window of the Library view, drag the slider to choose a mouth shape. The current drawing is swapped for the one in the preview window.