By default, videos are only recorded and uploaded when the user is on a WiFi connection, but this setting can be changed from the online dashboard.
The table below specifies the average upload size (per-minute) of video recordings for iOS and Android:
Our recommendation for live apps is medium quality, the video is clear but yet faster to upload and easier to process. If you choose to set up the quality to High, we would advise you to only record “strong” devices, i.e iPhone 5 and above for iOS. or Galaxy S6 and above for Android.