EVS XT-3 Technical Reference

Restore Transfers
The following tables gives the transfer speed of A/V content of a given codec to the XF2
hardware, knowing that the XF2 bandwidth for restore is 32MB/s.
Codec Field Rate Video Bitrate RT Transfers
Apple ProRes LT 50.00 Hz 85 Mbps 2.8
Avid DNxHD®
HD MJPEG EVS/Standard
HD MPEG2 Intra
AVC Intra 100
DVCPro HD
50.00 Hz 100 Mbps 2.4
Avid DNxHD®
Apple ProRes 422
50.00 Hz 120 Mbps 2.0
Avid DNxHD®
Apple ProRes 422 HQ
59.95 Hz 185 Mbps 1.7
4.4.2. Gigabit Ethernet Transfers
General Description
This section provides empirical figures on transfer speeds for backup and restore jobs
processed by the GigE network. The GigE bandwidth however relies on the customer
network behavior, which depends on external conditions, and partly on the EVS servers.
The section presents data in tables including the following parameters:
1. Field Rate: field frequency used, or number of video fields transferred per second.
2. Video Bitrate: codec bitrate set by the user in the Codec section of the Server tab in
the Multicam Configuration window.
3. RT Transfers: maximum number of simultaneous transfers of A/V data that can be
processed for the given frame rate and video bitrate through the GigE network.
Calculation formula: Maximum GigE bandwidth / Actual Bandwidth =
real-time transfers
4. Transfer Speed: transfer speed for a single transfer expressed in faster than-real time
speed. The calculation formula is the same with a reference GigE bandwidth that is
slightly smaller.
Warning
• The reference GigE bandwidth used to calculate the data in this section
(65MB/s for a 1Gb GigE connection) depends on network behavior, which
only partly relies on the EVS server.
• The observations and data focus on steady rates: the transfer performances
with small clips will be lower as they generate a lot of starts and ends of
sessions.
32 4. Software Specifications
EVS Broadcast Equipment S.A. Issue 11.02.A July 2013

EVS XT-3 Specifications

General

Brand	EVS
Model	XT-3
Category	Server
Language	English