User`s manual
AXIS M7014
Video
Video
It is possible to configure the following video features in your A xis product:
• Video stream. See
page 14
.
•Streamprofiles. See
page 15
.
• Camera settings. See
page 15
.
• Overlay image. See
page 16
.
Video Stream
You can defi ne the follow ing video stream settings from Video > Video Stream:
•Image.See
page 14
.
• H.264. See
page 14
.
•MJPEG.See
page 15
.
Note
Video stream can be configured f or each channel including quad stream .
Image
The default im age settings can be configured under Video> Video Stream. Select the Im age tab.
The following settings are available:
• Resolution. Select the default resolution.
• Compression. The compression level a ffe cts the image quality, bandwidth and file size of saved images; the lower the
compression, the higher the image quality with higher ban
dwidth requirements and larger file sizes.
• Rotate image. If required, the image c
an be rota ted.
• Maximum frame rate.Toavoidban
dwidth problems, the frame rate allowed to e ach viewer can be limited .
• Overlay settings.See
Ove
rlay, on page 16
.
Click Save to apply t
he new settings.
H.264
H.264, also known as MPEG-4 Part 10/AVC, is a video compression standard that provides high q uality video streams at low bit rates.
An H.264 video stream consists of different types of frames such as I-frames and P-frames. An I-frame is a complete image whe re as
P-fra
mes only c ontain the differences from previous frames.
T
he GOV length is the number of frames between two consecutive I-frames. Increasing the GOV length may save considerably on
bandwidth requirements in some cases, but may also have an adverse affect on image quality.
ThebitratecanbesetasVariable Bit Rate (VBR) or Constant Bit Rate (CBR). VBR adjusts the bit rate according to the image
complexity, using up more bandw idth for incre ased activity in the ima ge , and less for lowe r ima ge activity. CB R allow s you to set a
fixed Target bit rate that consumes a predictable amount of band width. As the bit rate would usually need to increase for increased
image activity, but in this case cannot, frame rate and image qualityareaffectednegatively.Topartly compensate for this, it i s
possible to prioritize e ither frame rate or image q uality. Not setting a prior ity m e ans that f rame rate and image quality a re equally
affected. You must save your settin g s before they can take effec t.
14