Best take

Live

Send up to eight takes of the same shot. Get them ranked best first on sharpness, exposure and how often a face is in frame.

FreeNeeds an API key. Nothing is charged.

Best take

Input

Takesvideo_urlsPublic https links to takes of the same shot.

mirror-take-1-eaf3e67f.mp4
mirror-take-2-61c522e6.mp4
mirror-take-3-b3ddf51c.mp4

Takes of the same shot, up to 8, each up to 10 minutes.

Free: nothing is held or charged.

These tools need an API key with the api:opennan scope: paste one under Use API key to run them.

Example

Example outputMade with these inputs

Best take: take 1
33
Score · Sharpness 33.6 · Brightness 39.9 · Faces in 78.1% of frames
Take 2
31
Score · Sharpness 4.1 · Brightness 39.8 · Faces in 81.2% of frames
Take 3
1.3
Score · Sharpness 6.7 · Brightness 4.1 · Faces in 0% of frames

How it works

01Send the takesUp to eight https links to the same shot.
02We score themSharpness, exposure and faces, frame by frame.
03Pick the bestEvery take scored, best first.

Call Best take from your code

One endpoint and one key, on the same balance as the playground. The request below is the example's own.

POSThttps://api.opennan.com/v1/qc/best-takes

Get an API key
Create a key in the console. It uses the same balance as the playground.
Create a key

Send your first request

The same request the playground sends. Set OPENNAN_KEY to your key.

curl https://api.opennan.com/v1/qc/best-takes \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video_urls":["https://cdn.opennan.com/examples/best-take/mirror-take-1-eaf3e67f.mp4","https://cdn.opennan.com/examples/best-take/mirror-take-2-61c522e6.mp4","https://cdn.opennan.com/examples/best-take/mirror-take-3-b3ddf51c.mp4"]}'

# Then poll until "status" is "succeeded" or "failed":
curl https://api.opennan.com/v1/tasks/<task id> -H "Authorization: Bearer $OPENNAN_KEY"

Poll the task
The call answers right away with a task id. Ask for the task until it finishes:
GEThttps://api.opennan.com/v1/tasks/{id}
queued
Waiting for a worker
running
Being made
succeeded
Done: outputs[].url holds the files
failed
Failed: you are not charged

Errors and how to fix them

401Missing or wrong key
Send the header Authorization: Bearer with a key from the console.
402Balance too low
Add credit in Billing, then send the same call again.
400A value is not accepted
Read error.message: it names the field. Use a value from the parameter table.
429Too many requests
Wait a few seconds and try again, waiting longer after each 429.

Add Opennan to your AI app

One install gives your AI every Opennan tool: video, images, chat, voice, music, sound effects, 3D, captions and dubbing. Pick your app and follow the steps.

MCP serverhttps://api.opennan.com/v1/mcp

Works in the Codex CLI, the Codex app and the Codex IDE extension: they share ~/.codex/config.toml. If the app or IDE does not see OPENNAN_KEY, use the config.toml option with your key in it. Codex asks before each tool call: approve it to go on.

Get an API key
Create a key in the console. It starts with sk- and uses the same balance as the website.
Create a key

Save your key as OPENNAN_KEY

# macOS / Linux (zsh shown; bash: ~/.bashrc)
echo 'export OPENNAN_KEY="sk-..."' >> ~/.zshrc
source ~/.zshrc

# Windows (PowerShell), then open a new terminal
setx OPENNAN_KEY "sk-..."

3
Install the Opennan plugin: the server plus a skill that teaches your AI to pick models, confirm prices and wait for results
```
codex plugin marketplace add Opennan/opennan-ai-plugin
codex plugin add opennan@opennan
```

Or add only the server

codex mcp add opennan --url https://api.opennan.com/v1/mcp --bearer-token-env-var OPENNAN_KEY

Or add this to ~/.codex/config.toml

[mcp_servers.opennan]
url = "https://api.opennan.com/v1/mcp"
http_headers = { Authorization = "Bearer sk-..." }

4
Check that opennan is listed
```
codex mcp list
```
Restart Codex, then ask for anything
“Make a 5 second video of rain on a neon street, a song to go with it and a poster image.”

Replace sk-... with your own key and keep it private: anyone who has it can spend your balance. Your app can list the tools before you add a key; making anything needs one.

This tool from your AI

Once Opennan is added, your AI calls this tool with arguments like these.

Tool: best_take_score
Example arguments: { "video_urls": [ "https://cdn.opennan.com/examples/best-take/mirror-take-1-eaf3e67f.mp4", "https://cdn.opennan.com/examples/best-take/mirror-take-2-61c522e6.mp4", "https://cdn.opennan.com/examples/best-take/mirror-take-3-b3ddf51c.mp4" ] }

Best take: questions

How much does Best take cost?

It is free: it needs an API key with the api:opennan scope, and runs are rate limited per account.

How do I call it from my code?

Send POST https://api.opennan.com/v1/qc/best-takes with your API key. It answers with a task id: ask https://api.opennan.com/v1/tasks/{id} until the task succeeds or fails.

Can my AI agent use it?

Yes. Add the MCP server https://api.opennan.com/v1/mcp and call the best_take_score tool, or point your agent at https://api.opennan.com/llms.txt.

Which API key do I need?

A key with the api:opennan scope. A full api key does not include it: create one with that scope in the console, then use it here under Use API key or in your code.

Best take

Input

Output

How it works

Call Best take from your code

Get an API key

Send your first request

Poll the task

Errors and how to fix them

Add Opennan to your AI app

This tool from your AI

Best take: questions