MPEG-4(1) / MPEG-4(2)
[MPEG-4 transmission]
Select “On” or “Off” to determine whether or not to transmit MPEG-4 images.
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On: Transmits MPEG-4 images.
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Off: Does not transmit MPEG-4 images.
IMPORTANT
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When “4:3 (800x600)” or “16:9” is selected for “Aspect ratio”, MPEG-4 transmission is unavailable.
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When “H.264” is selected for “Recording format”, MPEG-4 transmission is unavailable.
Note
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When “On” is selected for “MPEG-4 transmission” in “MPEG-4(1)” or “MPEG-4(2)”, displaying of MPEG-4 images or JPEG images on the “Live” page will be available.
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When “On” is selected for “MPEG-4 transmission” in “MPEG-4(1)” and “MPEG-4(2)”, MPEG-4 images are viewable using other devices with each setting.
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When “On” is selected for “MPEG-4 transmission” in “MPEG-4(1)” or “MPEG-4(2)”, the transmission interval of JPEG images may be longer.
[Internet mode (over HTTP)]
Select “On” when transmitting MPEG-4 images via the Internet. It is possible to transmit MPEG-4 images without changing the broadband router settings configured for JPEG image transmission.
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On: MPEG-4 images and audio will be transmitted using the HTTP port. Refer to
[HTTP port] for further information about the HTTP port number settings.
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Off: MPEG-4 images and audio will be transmitted using the UDP port.
Note
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When “On” is selected, only “Unicast port (AUTO)” will be available for “Transmission type”.
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When “On” is selected, it may take seconds to start displaying MPEG-4 images.
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When “On” is selected, MPEG-4 images may not be displayed depending on the number of the concurrent access users and audio data availability, etc.
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When “On” is selected, only IPv4 access is available.
[Image capture size]
Select “QVGA” or “VGA” for the image capture size of MPEG-4 images.
[Transmission priority]
Select a transmission priority for MPEG-4 images from the following.
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Constant bit rate: MPEG-4 images will be transmitted with the bit rate selected for “Max bit rate (per client)*”.
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Frame rate: MPEG-4 images will be transmitted with the frame rate selected for “Frame rate*”.
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Best effort: In accordance with the network bandwidth, MPEG-4 images will be transmitted with the bit rate varying between the maximum and minimum bit rates that are set for “Max bit rate (per client)*”.
Note
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When “Frame rate” is set for “Transmission priority”, number of users who can access the camera may be limited.
[Frame rate*]
Select a frame rate for MPEG-4 images from the following.
1fps/ 3fps/ 5fps*/ 7.5fps*/ 10fps*/ 12fps*/ 15fps*/ 20fps*/ 30fps*
Note
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When “Frame rate” is selected for “Transmission priority”, this setting is available.
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“Frame rate*” is limited by “Max bit rate (per client)*”. For this reason, the frame rate may be lower than the specified value when any value marked with an asterisk (*) is selected.
[Max bit rate (per client)*]
Select a MPEG-4 bit rate per a client from the following. When “Best effort” is selected for “Transmission priority”, set the maximum and minimum bit rates.
64kbps/ 128kbps*/ 256kbps*/ 384kbps*/ 512kbps*/ 768kbps*/ 1024kbps*/ 1536kbps*/ 2048kbps*/ 3072kbps*/ 4096kbps*/ Unlimited*
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Default:
* “Unlimited*” is available only when “Frame rate” is selected for “Transmission priority”.
Note
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The MPEG-4 bit rate is limited by “Bandwidth control(bit rate)” of [Network] tab on the “Network” page (→
17.1 Configure the network settings [Network]). For this reason, the bit rate may be lower than the value when any value with an asterisk (*) on the right is selected.
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When “Unlimited*” is selected, the number of users who can access MPEG-4 images will be limited to “1”. (Only a single user can access MPEG-4 images.)
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It is impossible to select “Unlimited*” for both “MPEG-4(1)” and “MPEG-4(2)”.
[Image quality]
Select the image quality of MPEG-4 images from the following.
Low(Motion priority)/ Normal/ Fine(Image quality priority)
Note
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When “Constant bit rate” or “Best effort” is selected for “Transmission priority”, this setting is available.
[Refresh interval]
Select an interval (I-frame interval; 0.2–5 seconds) to refresh the displayed MPEG-4 images.
If using under a network environment with frequent error occurrences, shorten the refresh interval for MPEG-4 to diminish image distortions. However, the refresh interval may be longer than the set value.
0.2s/ 0.25s/ 0.33s/ 0.5s/ 1s/ 2s/ 3s/ 4s/ 5s
[Transmission type]
Select the transmission type of MPEG-4 images from the following.
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Unicast port (AUTO): Up to 14 users can access a single camera concurrently. “Unicast port1(Image)” and “Unicast port2(Audio)” will automatically be selected when transmitting images and audio from the camera. When it is unnecessary to fix the port number for MPEG-4 image transmission such as when using in a particular LAN environment, it is recommended to select “Unicast port (AUTO)”.
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Unicast port (MANUAL): Up to 14 users can access a single camera concurrently. It is necessary to select “Unicast port1(Image)” and “Unicast port2(Audio)” manually to transmit images and audio from the camera.
It is possible to fix the port number of the router used for MPEG-4 image transmission via the Internet by setting “Unicast port (MANUAL)” (→
17.1 Configure the network settings [Network]). Refer to the operating instructions of the router in use.
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Multicast: Unlimited number of users can access a single camera concurrently. Complete the entry field of “Multicast address”, “Multicast port” and “Multicast TTL/HOPLimit” when transmitting MPEG-4 images with multicast.
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Default: Unicast port (AUTO)
[Unicast port1(Image)]
Enter the unicast port number (used to transmit images from the camera).
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Available port number: 1024-50000 (Only even numbers are available.)
[Unicast port2(Audio)]
Enter the unicast port number (used to transmit audio from the camera).
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Available port number: 1024-50000 (Only even numbers are available.)
[Multicast address]
Enter the multicast IP address. Images and audio will be transmitted to the designated IP address.
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Available IPv4 address: 224.0.0.0 - 239.255.255.255
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Available IPv6 address: Multicast address starting with “FF”
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Default:
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MPEG-4(1): 239.192.0.20
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MPEG-4(2): 239.192.0.21
Note
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Enter a multicast IP address after checking available multicast address.
[Multicast port]
Enter the multicast port number (used to transmit images from the camera).
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Available port number: 1024 - 50000 (Only even numbers are available.)
Note
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When audio is transmitted from the camera, the port number to be used will be the multicast port number plus “1000”.
[Multicast TTL/HOPLimit]
Enter the multicast TTL/HOPLimit value.
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Available value: 1 - 254
IMPORTANT
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When transmitting an MPEG-4 image via a network, the transmitted image sometimes may not be displayed depending on the settings of a proxy server or a firewall. In this case, refer to the network administrator.
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When two or more network interface cards are installed on the PC in use, the network interface card(s) not used for receiving images should be invalidated when displaying images using the multicast port.
[Smoother live video display on the browser (buffering)]
Perform settings to display camera images on the viewer software.
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On: Images are temporarily stored on the computer and are displayed smoother.
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Off: Images are displayed in real-time and are not stored on the computer.