Cobalt Digital Inc BBG-1090-DEC-MPEG Product Manual page 36

The parameters are:
• RTSP URL: Enter the full RTSP URL to access the RTSP server. Please consult the
RTSP server vendor to find out what to enter here. A comprehensive list of URLs from
the various IP Camera manufacturers can be found in
• TCP Transport: Standard RTSP uses a TCP connection to negotiate the streaming, and
RTP/UDP on a dynamically-allocated port for the video content. This mode of operation
is compatible with all RTSP devices, but it does not work well over the Internet nor can it
go across most firewalls. Many RTSP cameras support tunneling the video over the
control TCP connection, which works a lot better in complex networks, at the expense of
increased latency. If this box is checked, the Decoder will request this tunnel mode. If
this mode works with your camera, it is preferred.
• Wait for Sync: a few seconds after the stream start, the RTSP server may send a
synchronization message, which is primarily intended to synchronize audio and video.
Some RTSP cameras will send this even if they do not support audio. If you check this
box, the decoder will only start playing after the synchronization message is received.
Please keep in mind that some RTSP devices never send this message. It is suggested
that this be disabled at first, and only enabled if there are startup problems.
• Playback Priority: this parameter controls the amount of buffering in the decoder, as
follows:
o Low Latency: the decoder will try the least amount of buffering, but if there are
network issues, the video may stutter.
o Smooth Playback: the decoder will buffer a fair amount of data (several
seconds), so the playback is smooth, but at the expense of significantly more
latency.
• Authentication: Some RTSP devices can be configured to require username/password
authentication. Select Yes if this is the case. The following additional options are
displayed:
this link.
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