[mythtv-users] Experimental Android TV "leanback" MythTV frontend
jfabernathy at gmail.com
Sat Aug 24 12:20:04 UTC 2019
On 8/23/19 4:49 PM, James Abernathy wrote:
> On 8/22/19 11:14 AM, Peter Bennett wrote:
>> On 8/21/19 3:17 PM, Peter Bennett wrote:
>>> I am developing a pure android application for Android TV devices
>>> called android-MythTV-Leanfront.
>>> It uses the android TV leanback user interface as used by other apps
>>> such as youtube, prime video, etc. to play MythTV recordings.
>>> It supports 4K resolution video at 50 fps and voice search, which
>>> are not working on mythfrontend for android. Also it supports
>>> surround sound.
>>> It does not yet support many of the important features of
>>> Mythfrontend, and some features it may never support.
>>> See https://github.com/bennettpeter/android-MythTV-Leanfront for
>>> more details
>> To answer David's question on IRC - Some reasons for attempting this:
>> - I saw an opportunity to use the android exoplayer library and the
>> sample program to easily build a new frontend.
>> - Support Voice search, 4K playback, use only service api and avoid
>> version dependence.
>> - Avoid Existing android frontend problems - it is compiled with
>> IGNORE_SCHEMA_VER_MISMATCH, IGNORE_PROTO_VER_MISMATCH", it will not
>> support 4K or ipv6, we have to build with out of date ndk.
>> - frontend should not require a 4k device to play 1080 recordings.
> I've been playing with the new leanfront app on my Shield TV on a
> 4K-60fps Samsung TV. I'm comparing the mythfrontend app to the new
> Leanfront mythtv app. If I watch a networked news broadcast which is
> 1080i OTA recorded from and antenna and a Hauppauge WinTV Quad PCIe
> tuner I see only a very slight difference. The news broadcast has a
> text crawl along the bottom inserted by the local tv station with
> weather and traffic. Depending on the app you view this with, you can
> see small differences in the jitter of the news crawl. Normally with
> the TV showing the news straight from the antenna using it's internal
> tuner the crawl is perfect. With the Shield TV Kodi app, and
> Mythtv-leanback app the crawl is perfect just like the TV only
> viewing. The Shield TV Mythtv-frontend android app has just a very
> slight jitter in the crawl. You have to look hard to notice it. Also
> testing with the Raspberry Pi 4 with mythtv combo Frontend and backend
> there is no jitter on the crawl.
> So now for a couple of questions on the Leanback app. Is there a way
> to delete a program from the list you don't want? How can you skip
> forward and backward easily. using the ">>" control seems to be very
> hard for me.
> Jim A
So based on this mornings test, I think I see something different from
what I reported previous.
Program was a recording of a CBS News program on a local OTA station.
1080i HD, MPEG2 ATSC. TV was a Samsung 4K.
This morning the Shield TV apps, Mythtv-frontend,
Android-mythtv-leanback, and Kodi 18.3 all were perfectly smooth on the
text crawl at the bottom of the screen. absolutely no different. Some
panning looked jump, but I noticed that it looked that way on a Live TV
with internal tuner, so that's a filming issue with the source material
not Mythtv or HDHR tuners.
The only jitter I saw was on my Raspberry Pi 4B 4GB RAM. The news
program was recording while I was viewing the start of it. There was a
slight jitter in the news crawl. It's would run for seconds perfectly
smooth, then a slight jitter of a few letters, then smooth again.
All solutions were very watchable.
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