the enable checkbox enables display of closed captioning on the screen if it is checked and disables it if it is unchecked. closed captioning currently only is enabled for analog (composite/s-video inputs).

    if you check or uncheck the enable checkbox while overlay or capture mode is in effect, the change does not take effect until overlay or capture is stopped and restarted.

    it is recommended that you disable closed captioning when using non-closed captioned video. if you leave closed captioning enabled, the software attempts to interpret regular video as closed captioning character codes, and may sometimes display spurious characters. it also slightly increases the driver’s cpu usage.

    the normal display mode is over video. in this mode the closed captioning is superimposed on the video field.

    the own window option is a special proprietary mode for closed caption display. a separate window displays, and the text scrolls up in this window instead of appearing on the video field. this window disappears while you are capturing video and reappears after capturing video. this mode may be useful for some kinds of material, as the lines of text are not erased as quickly. the own window option, however, does not fully conform to closed caption standards, especially with regard to line placement. it may therefore give undesirable results with some kinds of highly formatted captions.