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QVidium – Pioneer in IP Video Transport and Error Correction
July 1, 2020 @ 4:00 am - 5:00 am
If you are transporting video over the internet, join us on Tues 30 Jun at 11:00 Pacific to learn the latest from QVidum, the inventors of ARQ.
The Internet Video Problem:
The Internet was never designed for Video
“Best-Effort” Transport Only
No Prioritization
Routers Drop Packets to Alleve Congestion
Dynamic Load Balancing Reorders Packets
Traffic is either UDP or TCP
UDP Transport is Real-Time, but Lossy
No Inherent Packet Recovery
No Guarantees on Packet Order
TCP Uses Positive Acknowledgement Packet Recovery
Not Real-time: Pauses for Unrecoverable Packets
Max Bitrate Limited by Distance & Node Hops
The Internet Video Solution: ARQ – Automatic Repeat Request
Automatic Repeat reQuest
Feedback Requests Resending Lost Packets
Receiver Delay to Allow Time for Recovery
Add Receiver Buffer to Create Delay
More Resilience → Larger Buffer
Lower Latency → Smaller Buffer
Capable of 100% Recovery
Capable of Full Recovery with Large Loss %
Zero Overhead on a Clean (Lossless) Network