[mythtv-users] TBS2603 HDMI to Ethernet h.265

Gerald Brandt gbr at majentis.com
Tue Dec 25 16:47:26 UTC 2018

On 2018-12-23 7:34 p.m., Stephen Worthington wrote:
> On Sun, 23 Dec 2018 18:09:58 -0600, you wrote:
>> On 2018-12-23 10:49 a.m., Stephen Worthington wrote:
>>> On Sun, 23 Dec 2018 08:56:24 -0600, you wrote:
>>>> On 2018-12-22 10:57 a.m., Stephen Worthington wrote:
>>>>> On Sat, 22 Dec 2018 08:36:20 -0600, you wrote:
>>>>>> On 2018-12-21 8:22 p.m., Stephen Worthington wrote:
>>>>>>> On Fri, 21 Dec 2018 14:33:12 -0600, you wrote:
>>>>>>>> Hi,
>>>>>>>> I have a TBS2603, which is working very well for me. If I switch it to
>>>>>>>> send h.265 instead if h.264, I get a black screen. Does MythTV 29 not
>>>>>>>> support h.265 video in yet?
>>>>>>>> Gerald
>>>>>>> If you are using an Nvidia card with VDPAU, then you may need to
>>>>>>> create a profile that will play H.265 using the CPU to decode.  MythTV
>>>>>>> does not yet support H.265 GPU decoding, although I think I saw a
>>>>>>> message where the dev doing the video decoding was looking at
>>>>>>> implementing it in v30.  And older Nvidia cards do not do H.265
>>>>>>> either.  You do need a decent CPU to do H.265 decoding also.  I do not
>>>>>>> know if the decoding code is multithreaded - if it is not, then you
>>>>>>> need a fast CPU rather than multicore, as only one core will be used.
>>>>>>> _______________________________________________
>>>>>> I'm using Kodi as a frontend (more wife friendly). It has an nVidia
>>>>>> 1050, I believe. I've played h265 videos on Kodi, so I assumed the
>>>>>> backend was the issue here.
>>>>>> Gerald
>>>>> Kodi does have H.265 support for using Nvidia GPUs, if the video
>>>>> chipset is late enough to do H.265 acceleration.  Mythfrontend does
>>>>> not have that support yet.
>>>>> _______________________________________________
>>>> So you're saying there's nothing in the backend to stop me from
>>>> recording h.265.
>>> No.  The way recording is done is to just copy the data in each stream
>>> transmitted for the channel.  If H.265 is what is transmitted, then it
>>> will be what is recorded.  So if you set the TBS2603 to H.265,
>>> mythbackend will record that.  Then you need to have a way of playing
>>> back those H.265 files.  In v29 with mythfrontend, that means you will
>>> have to have a good enough CPU to do the decoding.  Hopefully H.265
>>> decoding will be done in time to be in v30, but you would still need a
>>> recent Nvidia card that does H.265 decoding.  If your card is a 1050
>>> chipset, then that will certainly do H.265 in the GPU - I believe all
>>> the 10xx series do it.  As far as I know, Kodi (and VLC and maybe
>>> mplayer) already have the code to offload H.265 decoding to an Nvidia
>>> GPU.
>> What about commercial detection?
>> Gerald
> I have no idea if mythcommflag works on H.265.  I do not use it as it
> does not work well enough to be any use on my local TV stations so I
> turned it off.  It had no problem reading H.264 from our DVB-T
> channels, but it had far too many false positives and false negatives.
> It was a little better on our satellite pay TV service when it was
> MPEG2, but still not enough to be useful.  The pay TV is mostly also
> H.264 now, but I have not tried mythcommflag on it since then.  I do
> not miss having it as mythfrontend makes manually skipping over
> commercial breaks easy.  That is one reason I never liked Kodi as a
> frontend - it is much harder to skip around in a recording using Kodi.

Kodi 17 got way better.

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