[mythtv-users] pixalated live tv images

[Peter Bennett]

On 10/29/2016 07:51 PM, Kevin Johnson wrote:
>
>
> On Fri, Oct 28, 2016 at 8:21 PM, Peter Bennett <cats22 at comcast.net
> <mailto:cats22 at comcast.net>> wrote:
>
>     On 10/28/2016 06:03 PM, Kevin Johnson wrote:
>     > Hdhr is connected to a router that goes to the same card.
>     >
>     I had a problem with an HDHR and a DLINK router. When the HDHR and
>     backend were connected to the router, packets were lost every few
>     seconds, causing pixellation. I fixed it by using a switch between
>     HDHR
>     and backend, and just using the router for the Internet connection. It
>     seems that the router was dropping packets.
>
>
> Ya I am beginning to suspect some sort of hardware issue now.  It
> happens on all frontends and disabling power savings is not solving it.
> Just strange that this all started right after I upgraded everything.
>
> Another thing that has reared its head is starting live tv.  Sometimes
> it continuously stutters.  I have to pause it a few seconds and then
> all is fine.
> Usually occurs when I switch from one live channel to another,  And
> not everytime.
> Still digging around seeing if I can find others with these issues.
>
> Oh the joys of upgrading,
>
>  

These are notes for how I checked this situation. If you see "n" in
among the dots then you have packet loss (as in the example below).

Check for packet loss
Low level test for network packet loss - PRIME:

>From a shell (on backend when nothing is recording) run:
hdhomerun_config FFFFFFFF set /tuner2/vchannel <channel number>
hdhomerun_config FFFFFFFF save /tuner2 null
Replace "<channel number>" with the channel number for an unprotected
channel in your area.
If you have more than one HDHomeRun unit then replace "FFFFFFFF" with
the device ID of the desired unit.
You should see a series of dots. "n" indicates network packet loss. "t"
indicates a reception error. "s" is informational.
eg
................................................................................
...................................n............................................
...........................................................................n....
................................................................................
...................................n............................................
...........................................................................n....
................................................................................
...................................n............................................
...........................................................................n....
................................................................................
...................................n............................................
...........................................................................n...




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