The bandwidth used by Hangouts is adaptive and will vary to provide the best experience for the given conditions of the participants’ network. Here is a guide for the minimum and maximum bandwidth requirements and expectations:
Minimum bandwidth required:
Outbound from the participant: 300 kbps
Inbound to the participant: 300 kbps
Ideal bandwidth for the best experience:
Outbound from the participant: 2.6 mbps
Inbound to the participant: 2.6 mbps
With group video calls of more than 2 people you can expect bandwidth usage in ideal situations to be:
Outbound from the participant in all situations: 2.6 mbps
Inbound to the participant with 5 participants: 3.2 mbps
Inbound to the participant with 10 participants: 4.0 mbps