Thursday, December 2, 2010

Editing Video with Adobe Photoshop

Ever tried doing colour correction of videos in Apple's Final Cut Express? It not easy and it is a very slow process to get it perfect. As well, Final Cut Express does not offer as much controls as a photo editing software like Adobe Photoshop.

Yes, it is possible to edit (i.e., colour correction, etc.) videos with Adobe Photoshop. What it takes 10 minutes to do in Photoshop could take hours or even impossible.

How do you do this? Simply open the video file in Photoshop. Apply the necessary corrections (filters, adjustment layers, etc.) just as if the file is a photograph / raster image file. Note, filters are applied directly to the movie layer (just like a raster image layer).

This example has 3 adjustment layers

It is possible to adjust duration or from which frame to which frame an adjustment layer applies. Just opening the Animation Timeline window and adjust the timeline of that layer.

Adjustment layers are applied to the entire video in this example

Save the changes as Photoshop file (PSD). Render the video and that is it.

Menu path to render video (under the file menu)
Render video dialogue window
Movie settings

To make further changes in the future, simply open the previously saved Photoshop file. Caution: If the video file used in Photoshop has changed (specifically colour correction), distortions may appear. It's best to leave the original video alone.

Distorted view

What is the downside? Corrected video needs to be re-rendered. In order to bring the changes into (or back) into Final Cut Express (or other video editing software), it is necessary to re-render the video. Re-rendering the video from Photoshop of a 12 minutes clip took about 3 to 4 hours (in Apple Intermediate Codec).

Here is a comparison (audio has been turned off).

Original video

Video edited by Photoshop (added 3 adjustment layers: Levels, Vibrance, and Curves)

The "Photoshopped" video is less red, brighter, and maintains colour vibrancy.