Panasonic BL-C210 Series, Руководство по эксплуатации

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[Unicast] (Unicast RTP): While no special settings are required to stream video using unicast, video is
streamed to each individual user viewing video images, which creates more network traffic as more users
access the camera. Unicast is generally more reliable than multicast, and is not as susceptible to image
quality issues that may occur with when multicasting.
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Unicast streaming is not possible when viewing camera images over the Internet.
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Unicast streaming may not be possible when viewing camera images on certain local networks. Consult
your network administrator for more information.
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If a user with a low bandwidth connection or if many users are viewing images using unicast streaming,
frame rate will decrease and image quality may be affected for all users viewing H.264 or MPEG-4
images.
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If images cannot be displayed or if images break up when [Unicast] is selected as the streaming
method, select [HTTP].
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[HTTP]: When streaming video using HTTP, the camera confirms that the data is being received by the
user. Video can be viewed in network environments that do not support multicast or unicast streaming,
however, this streaming method requires more bandwidth than the other methods.
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If a user with a low bandwidth connection or if many users are viewing images using HTTP streaming,
frame rate will decrease and image quality may be affected for all users viewing H.264 or MPEG-4
images.
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If images cannot be displayed when [HTTP] is selected as the streaming method, select [MJPEG] as
the image refresh rate.
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When [HTTP] is selected, HTTP is used when viewing H.264 images, and RTP over HTTP is used
when viewing MPEG-4 images.
Note
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If a user with a low bandwidth connection is viewing H.264 or MPEG-4 images, frame rate will decrease
and image quality may be affected for all users viewing H.264 or MPEG-4 images.
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When the camera is configured to buffer images in H.264 or MPEG-4 format, frame rate will decrease
when viewing H.264 or MPEG-4 images on the single camera and multi camera pages.
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To adjust video streaming settings in order to improve image quality or frame rate when viewing H.264
or MPEG-4 images, see Page 145.
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BL-C230 only: When in wireless mode, Multicast may not work properly because the IEEE 802.11
standard limits the bandwidth. Select [Unicast] or [HTTP] as the streaming method.
Still images
Still images that are refreshed periodically can be displayed instead of video images by selecting the desired
refresh rate. For example, selecting [3 s] will refresh the camera image once every 3 seconds.
34 Operating Instructions
1.2.8 Video Images and Image Refresh Rate