The frame rate is on the bottom of each frame on the Animation tab of the Animation palette. Each frame can be changed separately or you can click on first frame, hold down Shift key while clicking on last frame to select all frames (you can also click the black right arrow in the circle top right of animation tab and select all frames). Click on the rate speed on bottom of any of the highlighted frames and select desired speed. The looping options are on the lower left of the Animation tab.

I work mostly with animated GIFs and have not used a Quicktime in Image Ready BUT the Help file says:

You can open movies in MOV, AVI, and FLIC formats to view and edit in ImageReady.

To open QuickTime-compatible movies:

Choose File > Open, and select the movie to open.
Select the range of frames to import:

. From Beginning to End to open the full file.

. Selected Range Only to open selected frames. Drag the slider below the movie thumbnail to specify the starting point for the range, then Shift-drag to specify the ending point. (A black bar on the slider indicates the range you select.)

Select Limit to Every Frame to specify which frames to include from the selected range. (You can use this option with either Range option.)
Click Open.

You can save an animation as a QuickTime movie. The resulting file is viewable in the QuickTime player and can be opened in other applications that support QuickTime movie format.

To save an animation as a QuickTime movie:

Choose File > Export Original.
Select QuickTime Movie from the format pop-up menu.

Note: On Windows, QuickTime Movie format is only available when QuickTime is installed on your computer.

Type a filename, and choose a location for the file.
Click Save.
If desired, adjust the compression settings, and click OK.

Forum: Photoshop

Subject: Suggested Settings for ImageReady