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VidTrans 21 Tweaking ECP Performance: A libRIST Deep Dive



Sergio Ammirata of SipRadius gives a presentation on optimizing Error Correction Protocol (ECP) over congested networks. In bandwidth limited emulated network simulations, we’ve recently improved libRIST recovery performance by about 40%. Before, we might top out at about 50% continuous packet loss; now we can reliably transmit video at a loss rate of 70% dropped packets with just a one second buffer. We will discuss the specific algorithms used in the librist library used to accomplish this.

Adi Rozenberg of VideoFlow provides commentary during this session.

This presentation was recorded on March 1, 2021 during the first virtual edition of VidTrans, an annual conference produced by the Video Services Forum (VSF).

Selected comments from the Zoom Chat Log:

Jian-Rong Chen (Sony Europe B.V): In terms of performance, how does RIST compare with TCP BBR?
Kieran Kunhya (Open Broadcast Systems Ltd): TCP BBR is designed for fairness on the network, RIST is designed to get your…