---
title: ZEN MASTER January 2019 RELEASE NOTES
slug: zen-master-january-2019-release-notes
createdAt: 2025-03-18T18:17:26.721Z
---

The following updates were pushed to ZEN Master during the month of December 2018.


NVIDIA GPU TRANSCODING SUPPORT



ZEN Master now allows you to select Amazon EC2 G3 instances, which provide access to NVIDIA Tesla
M60 GPUs for hardware accelerated transcoding and can be used in conjunction with Broadcaster
v12.3.32721 or later. The AWS g3.4xlarge reserved instance cost, for example, for a 24/7 channel
with 8 typical output renditions will be about 40% of the cost of using the software transcoder on a
c5.9xlarge instance. On demand pricing for g3.4xlarge instances is about 37% of the cost of on
demand c5.9xlarge instances based on 10 channels with 8 typical output renditions running on a
g3.4xlarge instance and 5 channels each running on two c5.9xlarge instances.



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MINOR IMPROVEMENTS AND BUG FIXES



• Implemented a retry mechanism when accessing Feeders and Receivers to prevent false
positive offline errors. This mechanism already existed for Broadcasters.
• Fixed transcoding profiles with 'High' profile not working.
• Fixed an issue with Broadcaster sources flapping between OK and Error state when they are
actually in an Error state.
• Fixed an issue with tunnel/redirect servers losing DTLS support if the AWS instance fails.