User manual

AXIS P1214–E Network Camera

Video

Image

The default image s ettings can be conﬁgured under Video> Video Stream. Select the Image tab.

The following settings are available:

• Resolution. Select the default resolution.

• Compression. The compression level a ffects the image quality, bandwidth and ﬁle size of saved images; the lower the

compression, the higher the image quality with higher bandwidth requirements and larger ﬁle sizes.

• Rotate image. If required, the image can be rotated.

• Mirror. If required, the image can be mirrored.

• Maximum frame rate. To avoid bandwidth problems, the frame rate allowed to each viewer can be limited.

• Overlay settings.SeeOverlay on page 17.

Click Save to apply the new settings.

H.264

H.264, also known as MPEG-4 Part 10/AVC, is a video compression s tandard 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. A n I-frame is a complete image whereas

P-frames only contain the differences from previous frames.

The 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 bandwidth for increased activity in the image, and less for lower image activity. CBR allows you to set a

ﬁxed Target bit rate that consumes a predictable amount of bandwidth. As the

bit rate would usually need toincreaseforincreased

image activity, but in this case cannot, frame rate and image quality are affected negatively. To partly compensate for this, it is

possible to prioritize either frame rate or image quality. Not setting a priority means that frame rate and image quality a re equally

affected. You must save your settings b efore they can take effect.

The current bit rate can be set to appear as text overlay. To do

this, select the Include text check box option under Overlay

Settings and enter the modiﬁer #b in the ﬁ eld.

MJPEG

Sometimes the ima ge size is l arge due to low light or complex scenery. Adjusting the m a ximum frame size helps to control the

bandwidth and storage used by the

Motion JPEG video stream in these situations. Setting the frame size to the Default setting

provides consistently good image quality at the expense of increased bandwidth and storage usage in lo w light. Limiting the frame

size optimizes bandwidth and storage usage, but may give poor image quality. To prevent increased bandwidth and storage usage,

the maximum frame siz

e should be set to an optimal value.

Stream Proﬁles

There are four pre-programmed stream proﬁles availab le for quick se t up . The s ettings for thes e can be adjusted. New customized

proﬁles can also be created. Each proﬁle has a descriptive name, indicating its purpose.

•Thestreamproﬁles can be accessed from the Stream proﬁle drop-down list in the Live View pag e.

• To add, copy, modify, and remove stream proﬁles go to Video > Stream Proﬁles.

• To select the default stream proﬁ le go to Live View Conﬁg > Stream Proﬁle and choose the proﬁle from the drop-down list.

For more information see the online help

on this page.