Product Overview

Comrex LiveShot delivers live, two-way, HD video and audio over a range of IP networks at latencies as low as 200mS. Utilizing sophisticated CrossLock VPN technology, LiveShot is able to make use of even the most challenging 3G/4G, Wi-Fi, and satellite networks to maintain a secure and stable connection. Perfect for both point-to-point applications and field broadcasts, LiveShot is ideal for streaming low-latency broadcast quality audio and video from anywhere internet is available.


  • Highest quality H.264 video codec
  • AAC, HE-AAC, and AAC-ELD audio codecs
  • Less than 200mS delay for two-way broadcast (depending on network factors)
  • Full-duplex cue channel
  • CrossLock technology for secure and stable broadcasting
  • Switchboard for easier connectivity
  • Works over 4G/LTE networks, Wi-Fi, wired broadband IP connections, Inmarsat BGAN and VSAT terminals
  • Free firmware updates
  • Top-notch technical support (English & Spanish)
  • 100% designed & built in the USA at our facility in Devens, Mass.
  • One year manufacturer’s warranty

LiveShot Rackmount works with:

LiveShot Portable
LiveShot Rackmount


LiveShot encodes and decodes video to the H.264 codec standard, which is the state-of-the-art codec for high quality video using low network bandwidth. But not all H.264 encoders are alike. Within the standard, several lesser-quality profiles are available to conserve processing power. For optimal video quality, LiveShot encodes with H.264 HIGH profile. While this option is unavailable in competing products, all H.264 options that maximize quality over poor networks and decrease latency are implemented in LiveShot.


Comrex has years of experience encoding live, low-latency audio over IP networks for broadcast, and LiveShot shows it. In addition to standard AAC audio coding, LiveShot uses HE-AAC and AAC-ELD audio coding, both reducing network bandwidth and lowering delay.


LiveShot can encode and decode an audio/video stream with less than 200mS delay (depending on encoding mode and network factors). LiveShot uses an automatic decoder buffer manager to keep delay to an absolute minimum.


LiveShot delivers full-duplex video and stereo audio. In addition, a full-duplex cue channel is available between the systems.


LiveShot utilizes CrossLock technology to create a stable and secure connection across the public Internet. CrossLock adds intrusion protection, encryption, and forward error correction. Using CrossLock, LiveShot units are able to connect at the touch of a button.

The most advanced network management tool on the market today, CrossLock gives users the ability to use multiple IP networks together simultaneously. When a new network is introduced, Crosslock will immediately evaluate how much bandwidth is available, while factoring in latency and jitter information, and combine the two connections to take advantage of all available bandwidth (in bonding mode).

More than just combining networks, CrossLock can also monitor and dynamically adjust how much of your stream is being placed on each network, in real time. When necessary, CrossLock can apply appropriate error correction, recovery, or concealment techniques. And when a network becomes unusable, CrossLock can isolate it, without any user intervention.

CrossLock alternatively has the ability to use multiple networks to send identical streams (in redundancy mode).

Switchboard TS

Comrex Switchboard is a feature that allows users to bypass common IP networking snags (like private LANs and firewalls) by routing data through a private server maintained by Comrex.

Switchboard within the hardware codec enables the following functions:

  • Comrex codecs can sync with a cloud based server and deliver status information
  • Comrex codecs can determine their public IP address and the type of any NAT-style router ahead of the codec, and display that information to the user
  • Comrex codecs can display presence, status, NAT info and IP addresses of other codecs within the same fleet
  • Comrex codecs can share this information with codecs outside the fleet (Shares)
  • Comrex codecs can take instruction from the server on how best to traverse NATs when placing a call between two codecs

Switchboard TS is included in the purchase of any LiveShot codec.

Learn more about Switchboard TS


Comrex Connect Modems

The Comrex Connect Modem is designed to support the unique needs of remote broadcasters. A high-powered, industrial strength 4G/LTE modem outfitted with a high-gain antenna, the Connect Modem is more powerful than most USB data modems available on the market, to handle the heavy data load of a broadcast over IP.

Learn more about Comrex Connect Modems


LiveShot Rack Specifications

  • Dimensions: 1.75”H x 19”W x 9.5” L
  • Weight: 7.5lbs
  • Input Voltage: 110-240VAC 50/60Hz
  • Power Consumption: 8W
  • Ethernet: 10/100Base-T
  • Composite Video Input: CVBS 480i/576i
  • Analog Audio In/Out: +20dBu FS Stereo
  • AES3 Audio In and Out: Stereo
  • HD-SDI Video Input/Output: SD 480i/576i HD 720p 1080i
  • Consumer Digital Video Output: SD 480i/576i HD 720p 1080i
  • Composite Video Out: CVBS 480i/576i
  • Cue Audio In/Out: 0dBU FS
  • Audio Encoder/Decoder: AAC/HE-AAC/AAC-ELD 18Kb/s-512Kb/s
  • Video Encoder/Decoder: H.264 High Profile 256Kb/s-10Mb/s
  • Cue Audio Encoder/Decoder: GSM 13Kb/s
  • Encode/Decode Delay: 200mS (not including network and buffer)
  • Operational Temperature Range: 0 to 50C
  • Operational Humidity Range: 0 to 90%

LiveShot rack IP video codec, back view


North TV Cuts from Cable with LiveShot
“LiveShot is surprisingly easy to use… I can give a person here who’s never seen or operated LiveShot a 10-minute explanation of how it works and they’ll be able to operate it without a problem—that’s critical with the volunteers we have.”

K-Wave Broadens Audience with LiveShot for Visual Radio
“With LiveShot and the same exact camera, same lighting, and same set design, no one would know that our host wasn’t in the studio. The quality is amazing, and we’re pretty happy with it.”

LiveShot Allows SHCTV To Go Live With Ease
“LiveShot has opened our channel up to 24/7 streaming. Our signal now goes through our own system; I have control over it… Now, I can truly go live with anything.”

LiveShot Makes BCTV Look Great
“If a product can get us the shots we need, it helps us stay in business and succeed in a competitive market. Comrex LiveShot has taken us to a whole new level of video production and distribution.”

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