[mythtv-users] Frontend Raspberry Pi setup issues

[DryHeat122 .]

So @Stefan, you were right.  I set the playback profile to openmax HQ and
it works.  I am still getting a little unsmoothness when the picture
changes a lot, but it's tolerable.  Thanks!

So I have two more questions if you guys don't mind.  First, I checked, and
it now works with wifi. iperf says the rate to port 6543 is 17.5 Mbps.  Is
that right on the edge of what's needed or is there room for the rate to go
down some?  I don't know what h.264 consumes.  I ask because I am testing
it in the middle of the day when the neighbors are at work and per @mike's
post it might not be as good later on.

Second, an option is to get a mini-pc like the MSI Cubi to run my FE on.
It has 5 ghz wifi (RPi3 only has 2.4) and more processing power (quad-core
celeron).  Do you think it would be worth the cost/effort in terms of
smoother playback and more reliable wifi bandwidth, or only a marginal
improvement?

On Tue, Jul 25, 2017 at 2:13 AM, Mike Perkins <mikep at randomtraveller.org.uk>
wrote:

> On 25/07/17 09:45, Stefan Davids wrote:
>
>> On 24/07/17 23:45, DryHeat122 . wrote:
>>
>>> I can't find any settings that throttle the wireless.  Anyway, I got it
>>> connected to a wired connection, and that *significantly* improved the
>>> FE startup speed.  Sadly I am still having the choppy playback problem.
>>> So maybe this h.264 content is just too much for the RPi3 to handle?
>>>
>>
>> Wireless can easily not be fast enough to stream HD.  You can test your
>> connection speed with iperf
>> on the frontend and the backend.  I think my rPi3 peaks around 600
>> kilobytes/s (ie around 5
>> Megabits/s) when watching UK HD channels and you will never get as
>> through put what the wifi claims
>> to have connected at so do check it with iperf.
>>
>> (Also it makes a massive difference how good the aerial is for wifi. I've
>> not tried the rPi3 but I
>> couldn't reliably stream music onto a rPi2 unless I used a proper Wifi
>> dongle with an obvious aerial
>> so I'm not sure how good the built in one will be.)
>>
>> Should be absolutely fine watching h264 CPU wise.
>>
>> What deinterlacer are you using?  The main variable I found was that and
>> if you chose the wrong one
>> it really struggled on HD.  If you're up to date with mythtv-light you
>> can use the "Advanced"
>> hardware one and it should be fine.
>>
>> If it is struggling CPU wise the little overheating icon generally
>> appears in the top right quite
>> quickly.
>>
>> If you upload a small example of what it looks to be struggling with
>> somewhere I'm happy to try it
>> on mine.
>>
>> Stefan
>>
>> Where you are makes a difference. With a wired connection, the bandwidth
> is all yours and nobody else can interfere with it. With wireless, you have
> to share the same bandwidth with every man and his dog who has wifi within,
> I dunno, maybe a quarter of a mile. That could be 15-20 people or more all
> trying to download cat videos.
>
> --
>
> Mike Perkins
>
>
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