Podcasts Technology Ideas on Video Communications QVidium – Pioneer in IP Video Transport and Error Correction [Webinar Recording]

QVidium – Pioneer in IP Video Transport and Error Correction [Webinar Recording]

Published: June 11, 2020, 6:20 p.m.

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

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