CEI EN 62676-1-2

This part of IEC 62676 introduces general requirements on video
transmission. This standard covers the general requirements for
video transmissions on performance, security and conformance to
basic IP connectivity, based on available, well-known,
international standards.

Clauses 4 and 5 of this standard define the minimum performance
requirements on video transmission for security applications in IP
networks. In surveillance applications the requirements on timing,
quality and availability are strict and defined in the last section
of this standard. Guidelines for network architecture are given,
how these requirements can be fulfilled.

Clause 6 and the next clauses of this standard define
requirements on basic IP connectivity of video transmission devices
to be used in security applications. If a video transmission device
is used in security, certain basic requirements apply. First of all
a basic understanding of IP connectivity needs to be introduced
which requests the device to be compliant to fundamental network
protocols. These could be requirements which may be applied to all
IP security devices even beyond IP video. For this reason
requirements are introduced in a second step for compliance to
basic streaming protocols, used in this standard for video
streaming and stream control. Since security applications need high
availability and reliability, general means for the transmission of
the video status and health check events have to be covered. These
are defined in general requirements on eventing and network device
management. In security proper maintenance and setup is essential
for the functioning of the video transmission device. Locating
streaming devices and their capabilities is a basic requirement and
covered in ´device discovery and description´.