Reducing the bit rate with Axis Zipstream

Reducing the bit rate with Axis Zipstream

How does Axis Zipstream work?

Whichever other reductive methods are applied to a video stream, encoding and decoding the stream for transmission and viewing will always require some kind of compression.

H.264 is the current MPEG standard (MPEG-4 AVC) for video encoding. H.264 and its successor H.265 (MPEG-4 HEVC) are likely to be the video standards of choice for the foreseeable future. Axis has now taken H.264 a step further with its Zipstream technology – a radically more efficient implementation of H.264, which can reduce bandwidth and storage requirements by an average 50% or more when compared to H.264.

Axis Zipstream provides various methods for reducing the video bitrate:

  • Dynamic Region of Interest (ROI)
  • Dynamic GOP
  • Dynamic FPS

These methods can be used independently of each other, or in combination, to reduce the stream’s bitrate and make the best use of the available bandwidth.

Dynamic region of interest (ROI)