Live stream closes, recording uninterrupted

Think you're confusing two things.

The first is how you get an m3u playlist from Channels DVR.
http://192.168.50.215/devices/ANY/channels.m3u
This provides an m3u playlist and takes parameters like format=ts (for an MPEG-TS playlist), or nothing (for an HLS playlist), or codec=copy (for an HLS playlist)

The second is the url inside the returned playlist that gets passed back to Channels DVR when that item in the playlist is selected to play/record.

Inside an HLS playlist would be
http://192.168.50.215:8089/devices/ANY/channels/2.1/hls/master.m3u8
Notice the /hls/master.m3u8 that specifies an HLS stream

Inside an MPEG-TS playlist would be
http://192.168.50.215:8089/devices/ANY/channels/2.1/stream.mpg
Notice the stream.mpg that specifies an MPEG-TS stream

I am ok the format=ts did the trick by itself ...

http://192.168.50.215:8089/devices/ANY/channels.m3u?gracenote=include&format=ts

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It’s theoretically possible that the TVE playlist does something funny during commercials and doesn’t update for a bit… we could look at increasing the timeout to 30 seconds and see if it makes a difference. It doesn’t really make sense to me that this would be happening, though.

Also, you could try using the new segmenter on your backend DVR and see if you see any difference.

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Thank you, I'll give that a try and report back.

This might help.

No issues so far with the updated timeout. The new segmenter seems to work fine between 2 DVRs on the same network, but it I enable it on my main DVR I get non-stop buffering on remote streams.

That's very strange. Thanks for reporting this.