Imagine having multiple archives for your VoDs. Imagine uploading the VoD to each of them manually. Eventually you write a script doing the legwork but that script only uploads sequentially and you always need to edit the script.
Or you create a config for this tool and start one command which then concurrently uploads the VoD to all the configured targets.
The `youtube` uploader relies on [Vault](https://www.vaultproject.io/) to store the oauth-token and the client credentials. Create a Google Cloud Platform project, enable the Youtube Data API, create a new application ("OAuth 2.0 Client IDs") with Type "Desktop App", put the client ID and client secret into the keys `clientId` and `clientSecret` in that Vault key. Run `publish-vod --validate-only` to authorize the application. This will automatically store the token into the Vault key.