YouTube video with interactive quiz questions injected at specified timestamps. Video pauses at each checkpoint and the learner must answer before playback resumes. Correct/wrong feedback shown with explanation. Checkpoint state tracked per-session; completed checkpoints are skipped on replay.
| Field | Type | |
|---|---|---|
| youtube_id | string (required). YouTube video ID. | required |
| title | string. Section heading above the player. | optional |
| checkpoints | array (required). Array of {at_seconds, question, options[], correct (0-based index), explanation} objects. | required |
{
"type": "video_checkpoint",
"youtube_id": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
"checkpoints": [
{
"time": "1:30",
"question": "What is X?"
},
{
"time": "3:00",
"question": "How does Y work?"
}
]
}{
"identifier": "urn:air:a2uicatalog.ai:atom:video_checkpoint",
"displayName": "Video Checkpoint",
"type": "application/vnd.a2ui.atom+json",
"url": "https://a2uicatalog.ai/atoms/video_checkpoint",
"capabilities": [
"apps-script-web",
"web",
"meet-stage"
],
"description": "YouTube video with interactive quiz questions injected at specified timestamps. Video pauses at each checkpoint and the learner must answer before playback resumes. Correct/wrong feedback shown with explanation. Checkpoint state tracked per-session; completed checkpoints are skipped on replay.",
"representativeQueries": [
"show a YouTube video with pausing quiz checkpoints \u2014 learner must answer to continue",
"youtube video with interactive quiz questions injected at specified timestamps. video pauses at each",
"render a video checkpoint"
]
}The renderer is open source. Deploy your own instance in 4 commands — you own the URL, no dependency on the demo endpoint.
git clone https://github.com/a2uicatalog/a2ui
cd apps-script-surface/gas-schema-renderer
clasp push && clasp deploy