This article describes how to use the AJA Helo Encoder for Livestreaming to the STREAMBOXY video platform.


  1. You have an AJA Helo Encoder and use the latest firmware v4.0
  2. Your AJA Helo is connected to the internet via ethernet + router and online
  3. Your internet upstream speed is at least 12 Mbits for a smooth 1080p stream with 25 frames per second
  4. Your firewall allows outgoing TCP connections via ports 2935 and 2936 (RTMPS) and optionally allows TCP ports 1935 and 1936 as fallback (RTMP)
  5. You have created a livestream in STREAMBOXY and have the permission to manage the upstream

Procedure for the settings of the AJA Helo


Set this value to 1920 x 1080 (1080i/p)


Frame Rate:

Select Full (for 1080i50) or Half (for 1080p50).

Video Geometry:  

Select Use selected Input or manually adjust the settings to an output resolution of 1920 x 1080 pixels

Video Bit Rate:

Select a rate of 4000 

Audio Bit Rate:

Select the 128 kbps option

I-Frame (GOP): 

Select 50 frames


Select an interval of 1

H.264 Encoding Profile:

Set to the "High" option

Slices Per Frame:

Set the value to 1

Encoding Rate Mode: 

Select the "Variable" option

Entropy Coding:

Select CABAC

Display Ratio:

Set this to Auto

Stream Type:

Select RTMP

Changing the encoder configuration once the stream was started can impact the Stream in a negative way. Reset the stream using the STREAMBOXY reset feature (described below) if you have changed encoder settings.