Upload MP4 videos or PNG/JPG images. Click any uploaded file to preview it. A live Stream can also be used as a background — type its Stream ID/URL directly into a target's Background field below, no upload needed.
Upload
Click or drop files
MP4, PNG, JPG
Selected:
Uploading...
Files
No files loaded yet
Preview
Select a file to preview
Stream Setup
Existing ingest stream
Paste the ingest stream ID or dashboard URL of an existing chroma-key setup. Key config and targets will be loaded.
This stream has no chroma-key config yet. Add one — it stays the ingest, and new target output stream(s) are created for it.
Stream Information
Pick a background for each target — RTMP ingest handles the green screen feed.
Off by default — enable to add timecode metadata packets (visible in the player)
Adds a target row — choose its background in the table.
Preview setup
Live composite
Preview
Live
Upload a green screen frame or video to start
FG
Foreground uses the ingest stream — or upload a frame / enter another Stream ID
frame
BG
Optional — upload a file, pick a listed asset, or type an asset name, URL, or Stream ID (MP4 · PNG · JPG · live stream)
BG fr.
OV
Optional — upload a PNG overlay for preview
Start an RTMP stream to see the live keyed output
FFmpeg Reference Command
Equivalent local FFmpeg command for the current parameters. For reference only — actual keying runs on the nanocosmos server.
Set up a stream and adjust parameters above to see the equivalent command.
