Most caption files are plain text files with time codes indicating the start and stop times for each caption. The end product generated by this process is a caption file. Download the captions as a caption file in the appropriate format for your needs.The Described and Captioned Media Program (DCMP) provides a Captioning Key with guidelines for effective captioning. Review and edit the captions to be sure they’re accurate and easy to follow.Caption text is displayed in real-time on the video as you type. Use the service’s captioning tool to watch the video and transcribe it.Some services also support uploading a video directly to their site. Provide the video’s URL to the captioning service.To keep the video private during the captioning process, don’t publish its URL (YouTube offers this as one of its privacy options). Upload the video to the web (most services can caption any video as long as it has a public URL, including videos on YouTube).The process for creating captions using each tool is approximately the same: There are free tools available online that make it possible and easy to caption your own video. For additional information, see our IT Accessibility Checklist page on Audio and video. This is one of several features that are needed for making videos accessible. Also, in supporting media players, captions make it possible for users to search the video and can be repurposed as an interactive transcript so users can jump directly to particular points in the video from the transcript text. They also help people for whom English is a second language, people who process information better if presented in multiple modes (sound and text), people who are unfamiliar with the vocabulary used in the video, people who have the sound turned off on their devices, and people in noisy environments who are unable to hear the sound from their devices. Captions must be available in order to ensure audio content is accessible to people from the Deaf and Hard of Hearing community. Typically users can toggle captions on or off using a CC button on their media player. Captions provide a text version of a video’s spoken audio, plus a description of important sounds, synchronized with the video.
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