go-livepeer requires access to the Arbitrum network for typical usage. There are two ways you can connect to the Arbitrum network: via a hosted API service or via your own self-hosted node. Connecting to a hosted API service is recommended for users that are getting started and you always have the option to switch to your own node later on.

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Hosted API services

Hosted API services run Arbitrum nodes on behalf of their users. Popular services include Infura and Alchemy. Be aware that these services have their own pricing plans. That being said, the latest versions of livepeer should be able to stay within the request limit for Infura’s free tier at least for a single node. The following examples describe the required flags to connect to an EVM-compatible network via Infura (all other flags omitted): To connect to Arbitrum mainnet: 
livepeer \
    -network arbitrum-one-mainnet
    -ethUrl https://arbitrum-mainnet.infura.io/v3/<PROJECT_ID> # Visit https://infura.io to obtain a PROJECT_ID

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Self-hosted Arbitrum nodes

If you want to run your own Arbitrum node, set one up using the instructions from Offchain Labs. Once your node is synced, connect livepeer to the node with the following flags (all other flags omitted): 
livepeer \
    -network mainnet \
    -ethUrl http://localhost:8545 # Assumes that your node is running on the same machine as livepeer

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Supported networks

livepeer supports the networks listed below. The required flags for connecting to a network are described (all other flags are omitted).

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Arbitrum One

Arbitrum One is the production public network. 
livepeer \
    -network arbitrum-one-mainnet
    -ethUrl <ETH_URL> # URL for Arbitrum mainnet provider

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Private Network

Custom private networks where the Livepeer smart contracts are deployed can be used for development purposes. 
livepeer \
    -network <NETWORK_NAME> # Name of network
    -ethUrl <ETH_URL> # URL for private network provider
    -ethController <CONTROLLER_ADDR> # Address of the Controller smart contract deployed on the private network

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Offchain

Offchain networks that do not require interaction with the Livepeer smart contracts can be used for development purposes. 
livepeer \
    -network offchain