Any new media added to your My Media or Media Gallery will automatically have captions applied. The captioning uses a computerized speech-to-text process and is 70-80% accurate. Typically, machine captions are ready in less than twice the length of the video. For example: if you upload a 15-minute video the captions should be ready in half an hour or less, but captions can take longer if the system is under heavy load.

Once the machine-captioning is complete, you should review and edit the captions to improve their accuracy.

NOTE: videos with clearly recorded audio will produce better machine-generated captions.