Cleanfeed is an Emmy-award winning service to have remote guests with studio quality which I have covered in many past articles. Many high-end Cleanfeed Pro clients include the BBC, Discovery, NBC Universal, NPR, Technicolor and Warner Brothers. Although many productions include only the host(s) and guest(s) to be recorded or broadcast live, sometimes, there must also be connected producers who direct the guests or actors/actresses remotely, often with isolated tracks. Recently, a client asked me about the bandwidth requirements when several guests must be recorded on isolated audio tracks, and there must also be a large number of connected producers who don’t need to be recorded, nor do they require studio quality in their voices. I got Cleanfeed involved with the conversation to help do the bandwidth mathematics and guidelines. Cleanfeed also described how the producers could all be connected via a conference service (i.e. Google Meet, Zoom.us) and bridged to the Cleafeed Pro session. Ahead are the results.
At the studio (when you initiate the Cleanfeed Pro session)
At the studio (when you initiate the Cleanfeed Pro session). Cleanfeed suggests allowing for 172kbit stream per person actually connected to Cleanfeed Pro:
172 kbit per user
That will need to be in each direction. It’s best to allow a 100% margin for error, so Cleanfeed suggests 344kbit (0.344 Megabits/second) upload, 344kbit (0.344 Megabits/second) download per person connected directly to Cleanfeed Pro.
So if there were 3 guests and 3 producers/directors, a total of 6 people all connected directly via Cleanfeed Pro, it would be 2.064 Megabits/second total, including the margin of error or headroom.
At each guest’s location
At each guest, each one should have only 344kbit (0.344 Megabits/second) upload, 344kbit (0.344 Megabits/second) download.
Bridging in a conference service into the Cleanfeed Pro session
If a much larger amount than 3 producers/directors are required, it is possible to combine all of the producers/directors in a single conference call, and then bridge that into the Cleanfeed Pro session. The bandwidth required by that conference call to the studio would be (at maximum) the amount required by a single producer/director, as long as audio only is used.
Conclusions
By bridging Cleanfeed Pro with a consumer-level conferencing service like Google Meet or Zoom.us, a large amount of bandwidth can be saved, to accomplish the goal of getting the actual host(s), guest(s) or actor(s) and actress(es) with studio quality. For more information, visit Cleanfeed.net.
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