Could you clarify if refers to a specific video file or a project code ? Knowing the software or industry you're working in would help in drafting more precise text for you.
If this is a reference to a saved message on a mobile device:
: To add text to a draft, users typically use the "Callout" or "Text Box" features. Some fields can be automated using Property Text .
: Review of draft-ietf-json-text-sequence-09 covers the rules for parsing multiple JSON texts.