Updated: 8/23 /2021 Page 3 | 19
Captioning Terms
• Subtitles are transcript files with time codes (aka a time-stamped transcript).
These tell the computer when to display the text on the screen. Technically,
YouTube creates subtitles.
• Transcripts are just text - where all spoken words from the audio are presented
textually. An audio-only clip will only have a transcript or a time-stamped
transcript.
• True Captions display all sounds from the audio (spoken words, background
noises/music, etc.) in text form synced to display with the video and have
standards for sizing, color, etc. Captions are typically professionally produced.
• Video Description (aka Audio Description) is used in order provide access for
users who are visually impaired. This is where all meaningful content that is
provided visually (which is not also provided in the dialog) is described. Think of
video description like a screenplay.
YouTube and Accuracy
You may wonder, “Why not just use the Automatic Captions in YouTube?” YouTube’s
Automatic Captions create a somewhat accurate time-based transcript. It used to be
very inaccurate; however, it’s been improving greatly. With clear, moderately spaced
speakers, automatic captions may give you about 80% accuracy, but right now they
provide no punctuation. The meaning needs to be the clear for all users. To be
accessible, everyone should have equal access to your communication, and you’ll want
to make sure your students have an accurate account of what you’re saying. It doesn’t
look good on your part to have lots of errors, especially on new vocabulary!
YouTube Help offers up-to-date, step-by-step guidance on how to Add your own
subtitles & closed captions.
Getting Started
These directions assume you have the following items:
1. Video file you would like to caption
2. Transcript that matches the audio in the video (optional)
3. Google account
4. Text editor