Grass Valley K2 System Guide v.9.0 - Manual (Page 203)

for AppCenter Elite, ChannelFlex features allow you to configure up to eight inputs/outputs, so up
to eight live streams are similarly available. When a K2 Summit system is licensed, in Configuration
Manager (a part of the K2 AppCenter application) you can configure proxy/live streaming for each
channel. You can turn proxy file recording on or off, and you can turn live network streaming on
or off. When you turn proxy file recording on, you can then select up to eight audio tracks to include
in the proxy file. You can also turn automatic scene detection on or off. When you turn scene
detection on, you can configure the minimum scene length. When you turn proxy live network
streaming on, you can then select two audio tracks (one pair) to include in the proxy stream.
If licensed for AppCenter Elite, a ChannelFlex channel generates proxy/live streaming as follows:
• Multi-cam Recorder — Both high-resolution assets have their own proxy file. Two live streams
are also available. If shared audio, the proxy file and live stream are generated as follows: the
first input includes video, audio, and timecode; the second input includes video but does not
include audio and timecode. If shared audio, the proxy file and live stream are generated as
follows: the first input includes video, audio, and timecode; the second input includes video and
audio but no timecode.
• 3D / Video + Key — Two live streams are available as follows: the first input/output includes
video, audio, and timecode; the second input/output includes video but does not include audio
and timecode. Proxy files are not created.
• Super Slo-Mo Recorder — A video-only proxy file and a video-only live stream are generated
that are normal speed, which means that they are one half or one third the Super Slo-Mo record
rate.
Proxy recording is not supported for continuous record mode.
Network switches and firewalls must be configured to allow the multicast live streaming traffic.
Grass Valley's STRATUS product accesses proxy files through a shared CIFS folder. There is a
limit to the number of proxy access connections on the server that hosts the share. Therefore full
proxy recording is only supported using one of the recommended STRATUS configurations with
a proxy server. Recording and storing proxy on the local media storage on a K2 Summit/Solo system
is not recommended.
Related Topics
Proxy/live streaming technical details on page 207
Proxy/live streaming formats
The proxy files and streams created by a K2 Summit/Solo system conform to industry standards,
as follows.
Video: MPEG-4 Part 2
Other Data Rate (Mbps) Frame Rate Format
GOP 1 second 1.5 Mbps 29.97, 25 320x240p
GOP 1 second 1.5 Mbps 29.97, 25 384x288p
GOP 1 second 1.5 Mbps 29.97, 25 512x288p
Audio: MPEG-4 Part 3 AAC-LC, 64 kbps, 48 kHz
06 November 2012 K2 System Guide 203
Proxy/live streaming