How to make video and audio accessible

Background audio is sound that doesn't add information to your video or audio-only content. It's audio you wouldn't feature in your video captions or basic transcript for audio-only content.

Informative audio is sound that does add information to your video or audio-only content. Informative audio includes:

• Speech
• Important sounds that help people understand the content, like laughter, sounds indicating something happening off-screen and music that is relevant to the video mood or topic

If your audio includes background audio, you must make sure it doesn't make it difficult to hear and understand the informative audio:

• Make sure that background audio is at least 20 decibels (about four times) quieter than informative audio; or
• Remove background audio 

This will help everyone listening to your audio. It will especially help people who find it difficult to understand speech or distinguish between informative and background audio.