How to get an AI summary of a Utilities file video
POST request to /v1/video/summarize with your input. You get clean JSON back in seconds for 1 credit/min +1 per call — no OAuth, scraping or platform SDKs. AI transcription + summary of an uploaded file — transcript included; 1 credit/min + 1.How to get an AI summary of a Utilities file video (step by step)
- 1
Get a free API key
Create a free Captapi account (100 credits, no card) and generate an API key from the dashboard.
- 2
Call the Video File Summarizer API
Send an authenticated POST request to /v1/video/summarize with your input. No OAuth, no scraping setup.
- 3
Read the JSON response
Parse the clean JSON response. Pass cache=true for a free 24h cache hit; default is always fresh.
Code example
curl -X POST "https://api.captapi.com/v1/video/summarize" \
-H "Authorization: Bearer capt_live_..." \
-F "file=@video.mp4"
# or: -H "x-api-key: capt_live_..."What the response looks like
{
"success": true,
"data": {
"filename": "sample.mp3",
"summary": "In this video, the speaker provides practical strategies for small marketing teams to effectively track short form video performance without getting bogged down in spreadsheets. The approach emphasizes consistency and simplicity, encouraging teams to focus on a few key metrics and insights. By analyzing competitor accounts, engagement rates, and successful video transcripts, teams can identify effective strategies and implement them in their own content creation efforts.\n\nThe speaker suggests starting by selecting five competitor accounts and reviewing their latest posts weekly to maintain a consistent comparison. Instead of focusing solely on raw likes, teams should prioritize engagement per view to gain a clearer picture of a post's effectiveness. Additionally, saving transcripts of high-performing videos can help identify successful hooks, while sharing a concise summary of findings with the team each week fosters collaboration and continuous improvement.",
"keyPoints": [
"Select five competitor accounts for weekly analysis.",
"Focus on engagement per view rather than raw likes.",
"Save transcripts of high-performing videos to identify effective hooks.",
"Share a weekly summary with the team that includes actionable insights."
],
"topics": [
"video marketing",
"short form video",
"competitor analysis",
"engagement metrics",
"team collaboration"
],
"sentiment": "positive",
"transcript": "Hi everyone, and welcome back. Today we're looking at how small marketing teams track short form video without spending their whole week in spreadsheets. First, pick five competitor accounts and pull their latest posts every Monday, so you compare the same window each time. Second, watch engagement per view, not raw likes, because a big account can hide a weak post. Third, save the transcript of every video that outperforms and look for the hooks that repeat in the first three seconds. Finally, share one short summary with the team each week, with three things to try next. Keep it simple and stay consistent.",
"transcriptSegments": [
{
"text": "Hi everyone, and welcome back.",
"start": 0,
"duration": 2.24,
"end": 2.24,
"timestamp": "00:00"
},
{
"text": "Today we're looking at how small marketing teams",
"start": 2.24,
"duration": 2.24,
"end": 4.48,
"timestamp": "00:02"
},
{
"text": "track short form video without spending",
"start": 4.48,
"duration": 1.96,
"end": 6.44,
"timestamp": "00:04"
},
{
"text": "their whole week in spreadsheets.",
"start": 6.44,
"duration": 1.94,
"end": 8.38,
"timestamp": "00:06"
},
{
"text": "First, pick five competitor accounts",
"start": 8.38,
"duration": 1.94,
"end": 10.32,
"timestamp": "00:08"
},
{
"text": "and pull their latest posts every Monday,",
"start": 10.32,
"duration": 2.12,
"end": 12.44,
"timestamp": "00:10"
},
{
"text": "so you compare the same window each time.",
"start": 12.44,
"duration": 2.8,
"end": 15.24,
"timestamp": "00:12"
},
{
"text": "Second, watch engagement per view, not raw likes,",
"start": 15.24,
"duration": 3.78,
"end": 19.02,
"timestamp": "00:15"
},
{
"text": "because a big account can hide a weak post.",
"start": 19.02,
"duration": 2.86,
"end": 21.88,
"timestamp": "00:19"
},
{
"text": "Third, save the transcript of every video that outperforms",
"start": 21.88,
"duration": 4,
"end": 25.88,
"timestamp": "00:21"
},
{
"text": "and look for the hooks that repeat",
"start": 25.88,
"duration": 1.4,
"end": 27.28,
"timestamp": "00:25"
},
{
"text": "in the first three seconds.",
"start": 27.28,
"duration": 2.04,
"end": 29.32,
"timestamp": "00:27"
},
{
"text": "Finally, share one short summary with the team each week,",
"start": 29.32,
"duration": 3.16,
"end": 32.48,
"timestamp": "00:29"
},
{
"text": "with three things to try next.",
"start": 32.48,
"duration": 2.24,
"end": 34.72,
"timestamp": "00:32"
},
{
"text": "Keep it simple and stay consistent.",
"start": 34.72,
"duration": 2.28,
"end": 37,
"timestamp": "00:34"
}
],
"wordCount": 104,
"segments": 15,
"language": "english",
"durationSeconds": 37.150001525878906,
"noSpeech": false
}
}Billing metadata (credits charged, cache hit/miss) is returned in the X-Captapi-Credits and X-Captapi-Cache response headers.
Request parameters
| Name | Type | Required | Description |
|---|---|---|---|
| file | file | Yes | Video or audio file (multipart form field — use -F file=@path, not a query string). Max 200MB / 60 minutes. |
| language | string | No | ISO-639-1 language hint, e.g. "en" or "tr". Omit to auto-detect. |
| translate | boolean | No | When true, translate speech to English before summarizing. Default false. |
| timestampGranularity | string | No | segment (default) or word. |
Frequently asked questions
What does the Video File Summarizer API do?
The Video File Summarizer API lets you generate an AI summary with key points and topics from a public Utilities uploaded video or audio file using one POST request to /v1/video/summarize. It returns clean JSON — no OAuth or infrastructure setup required.
How many credits does the Video File Summarizer API cost?
Billing is 1 credit per minute of audio (rounded up) plus 1 credit for the AI summary. Verify the line item with durationSeconds. No-speech uploads return HTTP 422 and are not charged.
Do I need a Utilities API key or OAuth?
No. A single Captapi key works across every platform Captapi supports — YouTube, TikTok, Instagram, Facebook, Twitter/X, Reddit, Threads, Bluesky, Pinterest, LinkedIn, Rumble, Spotify, Kwai, and more. We handle access, rate limits, retries, and authentication for you.
Which AI model powers the summaries?
Summaries are generated by an AI model from the transcript.
Is the Video File Summarizer API suitable for production use?
Yes. It is a stable REST endpoint with predictable JSON. Upload via multipart form field file (POST) — see the cURL sample. Use durationSeconds and durationSeconds to verify per-minute billing. No-speech uploads on File Transcript return noSpeech=true at 0 credits.
Ready to get an AI summary of a Utilities file video?
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