YOUTUBE TRANSCRIPT API
Get a YouTube video's spoken words with timestamps.
Retrieve a YouTube video transcript for search, summaries, research and content analysis. The result keeps text aligned with timing data, so your application or AI workflow can quote, index and navigate the source accurately.
SPOKEN CONTENT
Make the words inside a video searchable.
A transcript converts speech into time-aware text that is easier to analyze, cite and connect to the exact moment in the video.
Timestamped segments
Receive text with start and duration values instead of one unstructured paragraph.
URL or video ID
Use the YouTube link you already have or pass the video identifier directly.
Ready for retrieval
Index segments for search, semantic retrieval, quotations and source-linked summaries.
Works through MCP
Ask Codex or Claude Code to fetch the transcript and continue the analysis in the same conversation.
TRANSCRIPT SEGMENTS
Every sentence knows where it belongs.
Timing fields let you create chapter links, quotes and precise references.
Example YouTube transcript
{
"platform": "youtube",
"platform_content_id": "dQw4w9WgXcQ",
"language": "en",
"segments": [
{ "start_seconds": 0.4, "duration_seconds": 3.8, "text": "Welcome to the video." },
{ "start_seconds": 4.2, "duration_seconds": 5.1, "text": "Today we will explain the process." }
]
}ONE VIDEO, ONE TRANSCRIPT
A predictable input and a source-linked result.
If no transcript is available, Caelario reports that outcome without charging for a delivered transcript.
- 01Send a videoProvide the YouTube URL or ID.
- 02Retrieve the transcriptCaelario returns available text and timing segments.
- 03Search or analyzeUse the result in your app, export it or continue through an AI agent.
FROM VIDEO TO TEXT
Use what was said, not only the title and description.
Video searchResearch notesContent summariesTranscript archives
QUESTIONS
YouTube transcript questions.
Is this the same as video metadata?
No. Video metadata describes the upload. A transcript contains the spoken words made available as captions.
Does every YouTube video have a transcript?
No. A transcript depends on caption availability for that video.
Can I request several transcripts?
Yes. Add one video per target and Caelario tracks each transcript request separately.
How much does a transcript cost?
One delivered YouTube transcript costs 10 credits.