AI in Subtitling and Closed Captioning Quiz

Answers and explanations appear as you take the quiz.

1. Which information distinguishes accessibility captions from dialogue text alone?
   • A requirement that every line use a yellow font
   • A requirement that captions never be selectable
   • Relevant non-speech sound cues and speaker identification when needed
   • The assumption that ASR already captures every visual detail
2. Which technology first converts the audio into words?
   • Text-to-speech
   • Image classification
   • Machine vision
   • Automatic speech recognition (ASR)
3. What does an alignment step add to a transcript?
   • Background music
   • Precise start and end timestamps for each caption
   • A translation into French
   • The video's title
4. Which metric commonly measures captioning accuracy?
   • Word Error Rate (WER)
   • Frames per second
   • Screen resolution
   • File size
5. Why does live captioning often revise text after first showing it?
   • To add advertisements
   • Because it emits partial results quickly, then corrects them as more audio arrives
   • Because the viewer requested changes
   • To translate into more languages
6. In a caption-localization pipeline, which stage converts the transcript into another language?
   • Timestamp alignment alone
   • Audio waveform resampling alone
   • Machine translation, followed by checking the translated text
   • Speaker clustering without text conversion
7. Why should an AI captioning workflow adjust line breaks and reading speed after transcription?
   • Accurate words still need a readable on-screen presentation at the right time
   • Line breaks automatically fix every mistranscribed name
   • Reading speed determines the video's microphone sample rate
   • A correct transcript must be shown as one uninterrupted paragraph
8. What remains to check when an automatic transcript has a low Word Error Rate?
   • Nothing, because WER certifies complete accessibility
   • Only the video's file extension
   • Whether every caption is exactly the same length
   • Caption synchronization, readability, speaker labels, and necessary non-speech cues