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--- split_abr_encoding [2018/09/27 18:18] – walkeradmin
+++ split_abr_encoding [2023/03/09 22:35] (current) – external edit 127.0.0.1
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 ====== Split ABR Encoding ======
-<color #db5f0b>Sept 2018</color>
+<color #db5f0b>Sept 2018</color>\\
+<color #db5f0b>Updated Oct 2019</color>
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 \\
+----
+==== Note ====
+\\
+As of v11 (v11.0.1.4 is what is being used in this document) it is possible to do <color #00a2e8>Split ABR Encoding</color> using both <color #00a2e8>IP TS</color> and <color #00a2e8>SDI</color> inputs.
+\\
+\\
+==== Overview ====
 ----
 When encoding ABR Profiles, there can be times when the number and complexity of profiles exceeds the capabilities of a single server, for example:
@@ Line 18: / Line 27: @@
 </file>
 This profile list could not be produced by a single server (at the time of writing) and so two or three servers might be required, but as this is ABR, and all the profiles need to be I-Frame aligned, we need a way to achieve this.
+\\
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 To overcome this we can use Split ABR encoding, where we can use several servers to encode different parts of the profile list, but still aligned in time. For this to work we need the following:
 \\
-<file>
+\\
-Servers must be time synchronised
+==== Requirements ====
+----
-A multicast is used for synchronisation, if using the MGMT port the MGMT switch must
+**Servers must be time synchronised**
-support multicasts.
-Interfaces on all servers must be identical in name and operation (so if eth1 is the
+**A multicast is used for synchronisation, if using the MGMT port the MGMT switch must
+support multicasts.**
+**Interfaces on all servers must be identical in name and operation (so if eth1 is the
 IP input, all servers must  use the name eth1 for the interface, and it must be the
-input interface)
+input interface)**
-</file>
-<color #ed1c24>This guide assumes you know how to create a standard ABR output service.</color>
+**While it is possible to do this on appliances, it is much simpler to do this on a distributed system with a centralised Controller**
 ----
@@ Line 37: / Line 50: @@
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+<color #ed1c24>This guide assumes you know how to create a standard ABR output service.</color>
+----
+==== Configuration ====
+----
     Create an ABR service as normal, but don't assign any servers to the configuration.
 \\
@@ Line 60: / Line 79: @@
 Port: Multicast Port
 </file>
+{{:splitabr001b.jpg?900|}}
 <file>
@@ Line 116: / Line 137: @@
 {{:splitabr007.jpg?600|}}
+\\
+\\
+\\
+\\
+----
+==== Sync Alarm ====
+\\
+If you see this alarm, or similar
+\\
+Timestamps synchronization messages are not being received or are not synchronize for service=2f73015aa94040ceb39b3cbffa37d2e3;;sdt=SplitABRTest
+\\
+If everything is configured okay, and you are using SDI input, SDI sync is not supported before around v10.3, so check your Encoding Live version.
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