I followed the guide for migrating Channels DVR from one Mac to another.
All the Passes, 126 shows and 99 recordings show as being transferred successfully.
Except that every recording that was made on the old Mac does not work on the new Mac.
Every attempt to play an old recording results in
"The media could not be loaded, either because the server or network failed or because the format is not supported"
The media plays great in VLC so the drive and the file are all good.
It is not a network issue because the files are all local.
So that means an issue with the Channels DVR Server.
I am running MACOS 12.01 and Channels 2021.10.25.1801.
I cannot find any other updates for either so it appears both are current.
Ironically if I add the folder with the unplayable Channels recording as a local media all is good and everything is there and working.
The TV shows all show up in the Recording section are not playable - those showing in local media TV Shows all work fine.
Same files, same folder.
New recordings are going to the right folders and are playable.
So I guess I have a workaround.
But disappointing that the Channels DVR migration failed.