Adobe Photoshop CS4 - Manual (Page 579)

572 USING PHOTOSHOP CS4
Video and animation
Last updated 1/10/2010
• Optimized For Specifies the intended delivery method if you choose H.264 from the Video Format menu, click
Video Options, and select Best Quality. This setting tells the codec how much the data rate can vary above and below
the data rate you choose.
• Image Size Specifies a standard for sending the file to a mobile phone. Current maintains the source material size;
the resulting file may not play on a mobile phone. Choose Custom to specify a size not listed in the menu.
• Preserve Aspect Ratio Using Specifies an option when you’re changing the image size and the movie needs to be
scaled to the new dimensions. Letterbox scales the source proportionally to fit into the clean aperture, adding black
bars to the top and bottom or sides as necessary. Crop centers, scales, and trims to the clean aperture.
• Frame Rate Specifies the frames per second (fps) during playback. In most cases, your video will look better if you
choose a number that your source fps is exactly divisible by. For example, if your source is captured at 30 fps, choose
a frame rate of 10 or 15. Don't choose a rate larger than that of your source material.
• Key Frame Specifies how frequently key frames are created in the exported video. A higher key frame rate (lower
number) improves video quality, but increases the file size.
• Video Options If available, click the Video Options button to open the 3G Advanced Video Settings dialog box.
Depending on the video, you can specify whether to add re-sync markers inside the video frames to help with packet
loss recovery when streaming. With H.264 video, you can also speed up the compression process (for preview
purposes, for example) by choosing Faster Encode (Single-pass). The default option, Best Quality (Multi-pass), allows
the codec to determine how many passes are needed to compress the data for the best quality.
Audio All audio options are disabled because Photoshop Extended does not include audio in exported 3G files.
Text All text options are disabled because Photoshop Extended does not include text tracks in exported 3G files.
Streaming Choose Streaming from the pop-up menu below the File Format menu and specify the following:
• Enable Streaming Creates a file for RTSP streaming to QuickTime Player. This option creates a hint track
(instructions necessary for streaming a file).
• Optimize For Server Helps the server to process the file faster, but increases the file size.
Advanced Choose Advanced from the pop-up menu below the File Format menu and specify the following:
• Restrict Distribution Specifies how many times the file can play back on the handset once downloaded. Also
specifies file expiration options: set the file to expire in a number of days or enter a date. If your file is in Mobile MP4
or EZmovie format, you can restrict distribution so that once the file is on a handset it can't be sent or copied elsewhere.
• Fragment Movie Enables the file to download via HTTP in small pieces so that playback can start faster and so that
larger files can be played on the handset (only the fragment, not the entire movie, must fit on the handset at one time).
FLC export settings
The following options are available in the FLC Export Settings dialog box:
Color Table Specifies the color table using the Windows system colors or Mac OS system colors in the exported movie.
Motion Sets the playback frame rate.
Specify AVI export settings
1 In the Render Video dialog box, select QuickTime Export and then choose AVI from the pop-up menu.
2 Click the Settings button.
3 In the AVI Settings dialog box, make sure Video is selected.
Important: Sound options are disabled because Photoshop Extended does not include audio in exported AVI files.