Illustra Essentials low quality in MJPEG

Description

When connecting to some essentials camaera’s OEM’ed by Dahua, the customer can put the camera in a mode that shows jpeg in a low quality and the quality slider has no apparent effect.

To reproduce

  • Add an essentials IES02D1OCWIYB to a >= 8.1.5.102802
  • each change of codec and bitrate mode must be made separately on this device.
  • Select H.264 and apply
  • select CBR and apply.
  • Select MJPEG and apply
    • Camera stuck in CBR and poor image quality
  • Select H.264 and Apply.
  • Select Constant Quality and apply
    • Camera still stuck in CBR and poor image.

Workaround

  • Factory default camera
  • avoid switching H.264 to CBR before selecting MJPEG.