Axis Official Documentation Extract:
"A video decoder is a device that receives video streams from IP cameras over the network, decodes the streams, and outputs the video to a monitor, typically using HDMI or other standard video outputs. This allows users to view live network video on standard monitors or televisions without the need for a computer."
- Source: AXIS Video Decoder Product Page
Supporting Extract from Axis Study Guide:
"Video decoders play a crucial role in network video systems where there is a need to display live video feeds on standard monitors. Unlike video encoders, which convert analog video to digital IP video streams, decoders convert IP video streams back into video signals that can be displayed on HDMI or composite video monitors."
- Axis Communications Academy, Network Video Fundamentals, 2022
References:
Axis Video Decoder Product Documentation
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 35-36) Summary:A video decoder is the correct device to use when you need to display live network video on an HDMI monitor. It takes the network stream and converts it to a format compatible with the monitor's HDMI input, which neither a video encoder, recorder, nor a connectivity hub can do directly.