WeChat.CustomMessage.send_video

You're seeing just the function send_video, go back to WeChat.CustomMessage module for more information.
Link to this function

send_video(client, openid, map)

Specs

send_video(WeChat.client(), WeChat.openid(), map()) :: WeChat.response()

客服消息接口 - 发送视频消息 - 官方文档

Example

WeChat.CustomMessage.send_video(client, openid, {
  media_id:         "MEDIA_ID",
  thumb_media_id:   "MEDIA_ID",
  title:            "TITLE",
  description:      "DESCRIPTION"
})