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E120 H.264 HD SDI encoder

Technical details

  • SD and HD SDI video in with embedded audio
  • SDI video out with embedded audio (loop through)
  • RS232 serial port (console interface – 3.5mm jack)
  • 240 MHz ARM926-EJ Processor with H.264 hardware encoder
  • 128 MB DDR2 RAM
  • 512 MB on board Flash
  • USB-2 (480 Mbit/s) type A 
  • 10/100 Mbit Ethernet (RJ45)

Audio and video encoding

  • H.264 codec up to level 4.1 (baseline, main, and high profiles)
  • video encoding up to 720p50/60, 1080i50/60 or 1080p24/25/30
  • audio encoding: high-fidelity, 2-channel AAC-LC codec
  • streaming: RTSP stream (128 to 20000 kbit/s)
  • live change of bandwidth, GOP size and resolution while streaming
  • power: 7 – 17V, 3.5W (5.5×2.5mm jack or internal power connector)
  • size: 77 x 79.3 mm
  • weight: 79 gr (just the encoding module)


  • Linux based (kernel 2.6.30)
  • control via integrated web interface
  • HTTP request based API (low latency: 100ms typical)
  • RTSP video streaming (low latency with selected players)
  • full access to system, video and encoding parameters


  • encoder only
  • micro SD card for additional storage (up to 32 GB)


  • April 2015: first prototypes
  • June 2015: 38080-2 production

E120 module rev 3 (38080-3)  (top view)

E120 module mounted in prototyping case

E120-W module with wifi add-on

Note: the E120-W is a few millimeters higher than the E110-W. The standoffs are 16 mm high whereas the E110-W standoffs are 8.5mm high. For this reason the E120-W does not fit into the standard prototyping case. Please contact us for upcoming case options.