[mythtv-users] MythTV on Raspberry PI 2...

[Matt Emmott]

On Mon, Feb 2, 2015 at 2:29 PM, Matt Emmott <memmott at gmail.com> wrote:

>
>
> On Mon, Feb 2, 2015 at 9:59 AM, Timothy Krantz <tkrantz at stahurabrenner.com
> > wrote:
>>
>>
>>
>> I have been playing with mythfrontend on Arm devices for a while now.  I
>> have tried MK802, hackberry and cubietruck.  All of these devices have
>> mali400 GPU’s and are limited to 3.4.104-ish kernels (if you want a video
>> console that is, the cubietruck can run “modern” kernels but not with a
>> graphics console).
>>
>>
>>
>> There is even a rudimentary VDPAU environment for them.
>>
>>
>>
>> They all “almost” run mythfrontend.  Well they do run it but not quite
>> satisfactorily.  Audio/video sync is problematic and they tend to attempt
>> to playback “too fast”, i.e. a framerate faster than the recorded
>> framerate.  I suspect it is either a problem with the RTC driver not being
>> “precise” enough or the lack of the “vblank” ioctl being implemented.  The
>> cubietruck can play back most of my myth content but after a very short
>> while tends to “get behind” then attempt to “catch up” which results in the
>> wonky playback framerate.
>>
>>
>>
>> Now, all of that being said, I can’t find anything that implies that any
>> of the Raspberry Pi devices has an y VDPAU or VAAPI implementation.
>> Without that I **doubt** that the processor is going to be able to do
>> acceptable playback, bt I don’t know.
>>
>>
>>
>> Tim
>>
>>
>>
> There was an extra license file you had to purchase to make use of the
> H.264 decompression built into the GPU. I purchased it and ran Raspbmc, and
> had no problem with my 1080p Blu-Ray rips. The GPU has enough grunt to play
> back HD recordings just fine; I just don't know if anybody has implemented
> the use of the GPU for Myth recordings, or if we'd need to encode all of
> our recordings in H.264 ahead of time.
>
>
Quick clarification... I ran Raspbmc on the 'B' model of the Raspberry Pi.
I have not tried this latest Raspberry Pi 2 yet.
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