In order to send videos, the client must be started with an instance of chrome! Otherwise videos will be sent as files and not render properly in the app.

To use chrome set useChrome (finds the chrome installation automatically) to true or set the executablePath (set the chrome installation path manually).

useChrome takes a few seconds so to save time in consequtive processes set executablePath (useChrome will output the valid executablePath in the logs so keep an eye on them)

    client.sendImage(chatId, dataUrl, 'filename.jpeg', 'cool caption')

    //send image as a reply to another message quotedMessageId
    client.sendImage(chatId, dataUrl, 'filename.jpeg', 'cool caption', quotedMessageId)

    //wait for the Id to be returned
    client.sendImage(chatId, dataUrl, 'filename.jpeg', 'cool caption', null, true)

Example of config for sending videos:

create({
  // For Mac:
  executablePath: '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
  // For Windows:
  // executablePath: 'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe',
}).then(client => start(client));