Adobe Photoshop CS4 - Manual (Page 558)

551 USING PHOTOSHOP CS4
Video and animation
Last updated 1/10/2010
Trim Layer Start To Current Time Temporarily hides section from the current-time indicator to the start of the layer.
Trim Layer End To Current Time Temporarily hides section from the current-time indicator to the end of the layer.
Note: You can also use the Lift Work Area command to hide frames in one or more layers, or the Extract Work Area
command to hide a specific duration in all layers of a video or animation.
Lift work area (Photoshop Extended)
A section of the footage in selected layers can be deleted, leaving a gap of the same duration as the removed section.
1 Select the layers you want to edit.
2 In the Animation panel, set the work area to specify the duration of the selected layers you want to omit.
3 From the Animation panel menu, choose Lift Work Area.
Layers before applying the Lift Work Area command
Layers after applying the Lift Work Area command
Extract work area (Photoshop Extended)
To delete portions of video and automatically remove the time gap, use the Extract Work Area command. The
remaining content is copied to new video layers.
1 Select the layers you want to edit.
2 In the Animation panel, set the work area to specify the duration of the video or animation that you want to omit.
3 From the Animation panel menu, choose Extract Work Area.
Split video layers (Photoshop Extended)
A video layer can be split into two new video layers at the frame you specify.
1 Select a video layer in the Animation panel.
2 Move the current-time indicator to the time or frame number where you want to split the video layer.
3 Click the panel menu icon , and choose Split Layer.
The selected video layer is duplicated and appears immediately above the original in the Animation panel. The original
layer is trimmed from the start to the current time, and the duplicate layer is trimmed from the end to the current time.