[mythtv-users] Wierd recording problem on HDHR tuners

[Kenneth Emerson]

I have 2 HDHR tuners: a quttro and a dual. All programming is OTA. All
recordings are perfect except for 1 channel (NBC). Watching recordings from
this channel breaks up for 1 second or less whenever there is a large
change in the picture like when the broadcast throws up an ID banner for
the news program. It's as if the stream is missing a type 'A' frame so it
pixelates until it gets the next A frame.

So I have experimented as follows:
Check signal with HDHR app: 100% for all three measurements
use all the tuners (total of 6) -- all have the problem
Connect a different antenna: same problem
Disable commercial flagging: same problem
Connect antenna to TV (live-no mythtv): perfect picture
Use smart TV's software to connect directly to HDHR: perfect picture

This tells me something is happening while reading/writing the stream by
the backend. I'm running v30 on Ubuntu 16.4. None of the other channels
exhibit this behavior. The problem is definitely in the recording and not
the playback.

The recordings aren't unwatchable, just (very) annoying. I don't know what
else to try besides reinstalling everything including upgrading to Ubuntu
18.04. Does anyone have any ideas less drastic?

-- Ken Emerson
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