[mythtv-users] FireTV 4K vs. Shield TV for mythtv frontend and Leanfront

Peter Bennett pb.mythtv at gmail.com
Thu Sep 17 13:36:29 UTC 2020


On 9/17/20 8:05 AM, lists at arewethere.net wrote:
> On Wed, Sep 16, 2020 at 02:44:17PM -0500, David Engel wrote:
> <snip>
>>> I guess it doesn't bother me since I don't know what to look for.  I mostly
>>> record HDTV OTA MPEG2 stuff from my antenna connected to an ATSC tuner like
>>> HDHR.  All of the stuff I watch is with mythfrontend or leanfront and I
>>> think it looks as good as with my PC with Nvidia GT1030 gfx card.
>> If you had the problem, you'd definitely notice it.  You'd also see it
>> on your GT1030.  It sounds like you're lucky and none of your local
>> channels are using the encoder parameters or encoders that cause the
>> problem to show up.
>
> I have been seeing a problem like this for quite a while but
> I was putting it down to glitches in the tv cards or something.
> It was always a puzzle because I have decent signal strength
> and I see it on all tuners (dvico, leadtek usb, hauppage quad).
>
> Let me list the symptoms to check
>
>   - DVB-T transmission (PAL)
>   - 7MHz channel width
>   - MPEG2 video
>   - Nvidia GeForce GT 710
>   - Content mostly 720p, some 1080p, no 4k
>   - v29 for the moment
>   - current playback profile is 'slim' but I see similar things
>     with other profiles like vdpau or opengl
>
> Still a match?
>
>    create a hybrid, palyback profile that does mpeg2 decoding
>    in software and the rest with mediacodec.
>
> Not sure how to go about creating a custom playback profile.
> https://www.mythtv.org/wiki/Playback_profiles looks like the
> place to start...guessing the steps are
>   - make a new playback group
>   - tweak the profile so Decoder is 'ffmpeg' for all resolutions
>   - not sure what's next
>
> Any hints?
> Vince
> _______________________________________________

There are fairly detailed instructions in the wiki (RTFM) :

https://www.mythtv.org/wiki/Android#Nvidia_Shield




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