Preferred Subtitle Renderer (filter)
Zoom Player can display subtitles using two different subtitle rendering engines. VobSub is the preferred engine, but if you're unable to get it working properly, give FFDShow's renderer a try. Configure Subtitle Filter
When clicked, you will be prompted by the Subtitle Configuration page, allowing you to set such options as Font, Colors and other advanced subtitle options.

Subtitle Stream Selection
Zoom Player has the ability to automatically select Subtitle streams in media files according to user specified input. You can specify a preferred Language Country ID, text match or a stream number. Zoom Player will first try to match the Country ID, failing that, Zoom Player will try to match the text field and failing that, Zoom Player will try to set a specific stream number. The reason that a Country ID or text match may fail is due to encoded media not always containing this information.

You can specify multiple text matches by separating each text string with the ";" character, for example "jap;eng", the matches are tested in order with the first match applied.

Disable FFDShow subtitle rendering when using VobSub as the Preferred subtitle renderer
If you've previously used FFDShow as a subtitle renderer, you may experience dual-subtitle display under certain conditions. This setting ensures that the FFDShow subtitle renderer is turned off automatically when using VobSub to render subtitles.

Always start with media subtitles hidden
When enabled, all media files containing subtitles (external or internal) will start playing with no subtitles showing.

Enable Closed Captions support for media files
Closed Captions are similar to subtitles but use a different rendering path and are not as common (they usually reside in MPEG2 Transport files). When enabled, Zoom Player will try to display closed captions ontop of the playing video.

Automatically hide Closed Captions when loading media files
When enabled, closed captions will start off hidden.

Subtitle synchronization adjustment value (ms)
Specify the number of milliseconds used by the subtitle synchronization functions.