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HTTP API 🧪

LosslessCut can be controlled via a HTTP API, if it is being run with the command line option --http-api. Note that the HTTP API is experimental and may change at any time.

See also CLI.

Enabling the API

To enable the API, run LosslessCut from the command line with this flag:

LosslessCut --http-api

Action endpoint: POST /api/action/:action

Execute a keyboard shortcut action, similar to the --keyboard-action CLI option. This is different from the CLI in that most of the actions (but not all) will wait for the action to finish before responding to the HTTP request.

See Available keyboard actions.

Example actions

Export the currently opened file:

curl -X POST http://localhost:8080/api/action/export

Seek to time:

curl -X POST http://localhost:8080/api/action/goToTimecodeDirect --json '{"time": "09:11"}'

Open one or more files:

curl -X POST http://localhost:8080/api/action/openFiles --json '["/path/to/file.mp4"]'

Batch example

Start the main LosslessCut in one terminal with the HTTP API enabled:

LosslessCut --http-api

Then run the script in a different terminal:

for PROJECT in /path/to/folder/with/projects/*.llc
    LosslessCut $PROJECT
    sleep 5 # wait for the file to open
    curl -X POST http://localhost:8080/api/action/export
    curl -X POST http://localhost:8080/api/action/closeCurrentFile
done

Await event endpoint

This special endpoint allows you to wait for a certain event to occur in the app. The endpoint will hang and respond/return only when the event fires. Below are supported events.

Event: export-start

Emitted when the export operation starts. The endpoint will return JSON { path: string }.

Event: export-complete

Emitted when the export operation completes (either success or failure). If successful, the endpoint will return JSON { paths: string[] }.

Examples

Run a command after each file that has completed exporting:

while true; do
  echo 'Do something with exported file path:' $(curl -s -X POST http://localhost:8080/api/await-event/export-complete | jq -r '.paths[0]')
done