Axis Communications AXIS 241SA user manual Frame rates Motion Jpeg, Frame rates MPEG-4

70AXIS 241QA/AXIS 241SA - Technical specifications

Important!

•The figures displayed here are the values as delivered by the server. If other restrictions are currently in force, (e.g. bandwidth limitation) these values might not correspond to those actually received by the client.

•For Motion JPEG, these values will only be accurate as long as no frame rate limit has been specified.

Frame rates - Motion JPEG

The following test results show the frame rates in frames/second (fps) for Motion JPEG streams from the AXIS 241QA/AXIS 241SA, using a compression level of 50%. Note that these values are guidelines only - actual values may vary.

	AXIS 241QA/AXIS 241SA
	fps (NTSC/PAL)	fps (NTSC/PAL)
	1 channel	4 channels
4CIF	30/25	10/8
2CIF expanded	30/25	15/13
2CIF	30/25	27/22
CIF	30/25	30/25
QCIF	30/25	30/25

Frame rates - MPEG-4

The following test results show the frame rates in frames/second (fps) for MPEG-4 streams from the AXIS 241QA/AXIS 241SA. Note that these values are guidelines only - actual values may vary.

The MPEG-4 test conditions:

•Compression level = 50%

•Video Object Type = Advanced Simple

•GOV structure = IP*

	AXIS 241QA/AXIS 241SA
	fps (NTSC/PAL)	fps (NTSC/PAL)
	1 channel	4 channels
4CIF	21/17	4/3
2CIF expanded	21/17	5/4
2CIF	30/25	10/9
CIF	30/25	20/17
QCIF	30/25	30/25

Note that setting the GOV structure to use “I-frames only” will increase the frame rate.

* The GOV structure can take two different forms; I and IP. The I-structure sends complete images (I-images) whereas the IP-structure mostly sends the differences compared with the previous image (P-images) and only a few I-images. The IP-structure requires much less bandwidth than the I-structure.