You can set a video rich media annotation (RMA) to open in a floating window, but the skin has to be self-contained - the playback controls are embedded in the PDF file as a SWF widget, not downloaded from anywhere else. In Acrobat X itself you cannot set the position of the floating window (it's possible with low-level code, not from within Acrobat). RMAs can be activated by scripted text links.
Creating a non-popup RMA is very easy - pick the Video tool from the Tools Pane > Content panel, drag out a rectangle on your page where the player is to be shown, and pick the URL or file. Once created, return to the hand tool and click it to activate.
To create a popup version triggered by a text link:
- Click and drag a small region to use as a placeholder (ut can be as small as you want).
- Add the video file or URI.
- Click "Show Advanced Options" on the dialog and set the playback style to use a floating window.
- Then create a new link (Tools > Content > Link) around your text
- Set the link properties to "custom link"
- Click the Actions tab and choose "Multimedia operation".
- Click Add, and make sure your video is the one selected on the list.
- Set the Action to "Play".
- Click OK to close the dialogs, then switch to the hand tool and click the link region.
