Although the streaming video player for both standard- and high-definition accounts provides you with the means to adjust the amount of sound you hear, increasing the volume isn't always an effortless task. After you access the player's volume control, you might also need to troubleshoot problems that can interfere with the sound.
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Player Volume Control
Netflix uses a bar-style volume control that's standard on many online streaming video players. Roll your cursor over the Volume speaker icon located to the right of the Play/Pause icon on the navigation bar at the bottom of the player and then drag the slider up to increase the volume.
Potential Playback Issues
Sometimes watching a video in high definition causes audio problems. Click "HD" on the navigation bar, if applicable, and remove the checkmark next to "Allow HD." If you're not watching in HD, check if you can adjust the volume on other videos. If they work fine, report the original video error to Netflix (see link in Resources). If you can't determine the cause of the problem, select "Call Us" on your Netflix homepage to retrieve a toll-free number and call Netflix for help with advanced troubleshooting.