If you use the RealPlayer media-playing application, you may have had trouble hearing certain videos. Poor sound quality can stem from the way the video was recorded, or you may be in a noisy location not conducive to watching movies. Also, if you're in a quiet place, such as a library, you'll need to watch videos with the sound turned down if you don't have a pair of headphones. Get around sound restrictions by taking advantage of the movie's subtitles or captions feature; instead of trying to decipher what the characters are saying, just read their dialogue on-screen.
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Launch RealPlayer, then click on "Tools" at the top of the window.
Click on "Preferences" and "Content." A control panel window appears.
Navigate to the "Accessibility" section. Click "Use Supplemental Text Captioning" to turn on captions. If you want to see audio descriptions as well, click "Use Descriptive Audio."