●When both JPEG and MPEG4 images are distributed When both JPEG and MPEG4 images are distributed, distribution works in the same way as frame rate priority mode if the distribution request would be accepted in the frame rate priority mode. If the distribution request would be denied in the frame rate priority mode, the frame rate is controlled such that the maximum bit rate is as shown in the following table, to accept distribution requests for up to a total number of 20 JPEG and MPEG distributions. However, distribution requests for which the total bit rate of the MPEG4 distribution stream exceeds 10 Mbps will be denied.
Maximum JPEG bit rate when only JPEG and MPEG4 data is distributed
Current number | Maximum bit rate | Total maximum |
of distributions |
| bit rate |
|
|
|
2 and below | 5 Mbps | 10 Mbps |
|
|
|
3 to 4 | 2.5 Mbps | 10 Mbps |
|
|
|
5 to 20 | 0.5 Mbps | 10 Mbps |
|
|
|
When only MPEG4 images are distributed, the maximum number of distributions is determined by the preset bit rate. When a distribution request that exceeds the maximum number of distributions is received, this request is denied.
When distributing only MPEG4 data (A Page 4)
Memo:
●If the bit rate is changed when image distribution is in progress, the restriction on distribution may not work correctly.
Insufficient network bandwidth
When there is insufficient bandwidth, the number of JPEG frames (frame rate) that the client can acquire will decrease. Delay will also occur in the distribution of images. In the case of MPEG4, noise interference may occur and playback may fail. There may be a longer delay or interruption in the audio.
Network Delay
When the client acquires JPEG via TCP, camera will send out data while checking the ACK from the client at the same time. For networks with considerable delay, data cannot be sent out until ACK is received, and therefore the frame rate will drop. In the case of MPEG4, noise interference may occur and playback may fail. Audio may be interrupted.
Decrease in the frame rate due to network delays can be eliminated by receiving data via multicast.
Network Jitter
When there is considerable network jitter, delay time may be prolonged and the image frame rate may drop. In the case of MPEG4, noise interference may occur and playback may fail. Audio may be interrupted.
Packet Loss
When acquiring images from camera via TCP, packet loss may be recovered by TCP transmission. When there is considerable delay in the network, however, missing data may occur and the image frame rate may drop. In the case of MPEG4, noise interference may occur and playback may fail.
Audio may be interrupted.
When packet loss occurs during multicast sending from camera, the image frame rate may drop. In the case of MPEG4, noise interference may occur and playback may fail.
Audio may be interrupted.
List of Protocols and Port Numbers Used by camera
camera uses the protocols and port numbers listed below. Ensure that these ports are allowed through the firewall when a firewall is to be installed.
Protocol/Port No. | Purpose of Use |
|
|
Source |
|
|
|
TCP/80 | JPEG/MPEG4 |
| acquisition, Web |
| Settings page, API, |
| Sending/Acquisition |
| of sound |
|
|
TCP/5510 | VSIP |
|
|
UDP/5510 | VSIP |
|
|
UDP/9541 | VSIP discovery |
| protocol |
|
|
TCP/10020 | (Reserved for |
TCP/10021 | adjustment) |
TCP/10023 |
|
|
|
TCP/32040 | Alarm server |
|
|
TCP/49298 | Sound data reception |
|
|
Destination |
|
|
|
TCP/20, 21 | FTP |
|
|
TCP/25 | Mail delivery |
|
|
TCP/110 | POP (Mail Delivery) |
|
|
TCP/User Setting No. | Sending alarm |
|
|
UDP/123 | SNTP |
|
|
UDP/User Setting No. | Sending alarm |
|
|
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