G7084.mp4 -

: Use FFmpeg to embed or extract 708 caption data from an MP4 file.

: If you are editing, you can use Edit > Transcribe to Captions to generate text from audio. 2. CEA-708 Captioning (Digital Captions) g7084.mp4

[Q] Support for CTA-608/708 captioning in SEI messages #2693 : Use FFmpeg to embed or extract 708

: You can hardcode subtitles onto an MP4 using MP4Box or similar command-line tools. g7084.mp4

If you have a video and need to extract the spoken words into a text document, you can use several tools:

: You can add text bubbles that follow motion using Final Cut Pro X .