BLANKOM HDE-4K5 User Manual
Version 1.0 – 12-2018
Page - 40 -
techn. data are subject to change w/o notice!
Encoding and codec parameters
We recommend to check
https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC
for basics and HEVC-specialities.
Loss resilience features including:
(NAL) definition allowing the same video syntax to be used in many network environments. One
very fundamental design concept of H.264 is to generate self-contained packets, to remove the header duplication as in
MPEG-4's Header Extension Code (HEC).
This was achieved by decoupling information relevant to more than one slice
from the media stream. The combination of the higher-level parameters is called a parameter set.
includes two types of parameter sets: Sequence Parameter Set (SPS) and Picture Parameter Set (PPS). An active sequence
parameter set remains unchanged throughout a coded video sequence, and an active picture parameter set remains
unchanged within a coded picture. The sequence and picture parameter set structures contain information such as picture
size, optional coding modes employed, and macroblock to slice group map.
(FMO), also known as slice groups, and arbitrary slice ordering (ASO), which are techniques for
restructuring the ordering of the representation of the fundamental regions (
macroblocks
) in pictures. Typically considered an
error/loss robustness feature, FMO and ASO can also be used for other purposes.
…
Switching slices, called SP and SI slices, allowing an encoder to direct a decoder to jump into an ongoing video stream
for such purposes as video streaming bit rate switching and "trick mode" operation. When a decoder jumps into the
middle of a video stream using the SP/SI feature, it can get an exact match to the decoded pictures at that location in the
video stream despite using different pictures, or no pictures at all, as references prior to the switch.
General notes about Streams:
Multicast Address Ranges:
We recommend, that the addressing of your Multicast streams should be in conjunction with this listings to avoid conflicts with
other network equipment or protocols.
https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
One small part from this:
IPv4 Multicast Address Space Registry
Last Updated
2018-01-05
Expert(s)
Stig Venaas
Note
Host Extensions for IP Multicasting [
] specifies the extensions required of a host implementation of
the Internet Protocol (IP) to support multicasting. The multicast addresses are in the range 224.0.0.0
through 239.255.255.255. Address assignments are listed below.
The range of addresses between 224.0.0.0 and 224.0.0.255, inclusive, is reserved for the use of routing
protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and
group membership reporting. Multicast routers should not forward any multicast datagram with
destination addresses in this range, regardless of its TTL.
