[mythtv-users] Jerky playback on BBC HD Chennels

Sun Jan 20 16:25:14 UTC 2013

On 20/01/13 13:35, Paul Gardiner wrote:
> On 20/01/2013 12:54, Jason Kitching wrote:
>>
>> On 20/01/13 12:00, mythtv-users-request at mythtv.org wrote:
>>
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>>> Today's Topics:
>>>
>>>     1. Re: Jerky playback on BBC HD Chennels (Paul Gardiner)
>>>     2. Re: Mythbuntu Theme Does Not Update Watch Recordings
>>>        Title/Description (Works Fine In Terra)? (nospam312)
>>>     3. Re: Jerky playback on BBC HD Chennels (Paul Gardiner)
>>>     4. Re: SMARTD reports a drive issue with a MythTV Storage drive
>>>        (Thomas Boehm)
>>>
>>>
>>> ----------------------------------------------------------------------
>>>
>>> Message: 1
>>> Date: Sun, 20 Jan 2013 10:26:56 +0000
>>> From: Paul Gardiner <lists at glidos.net>
>>> To: Discussion about MythTV <mythtv-users at mythtv.org>
>>> Subject: Re: [mythtv-users] Jerky playback on BBC HD Chennels
>>> Message-ID: <b0c72b19-35e7-4598-8ce1-c13a6adb9590 at email.android.com>
>>> Content-Type: text/plain; charset=UTF-8
>>>
>>> Jim Stichnoth <stichnot at gmail.com> wrote:
>>>
>>>> On Sat, Jan 19, 2013 at 9:15 AM, Jason Kitching
>>>> <jason at jadrallypix.me.uk> wrote:
>>>>> Recently developed a problem with jerky playback on BBC HD channels.
>>>>>
>>>>> Whether it's Livetv or pre-recorded, including historic recordings
>>>> that up
>>>>> until earlier in the week played back correctly, but now the playback
>>>> is
>>>>> juddery, jerky.
>>>>> It looks similar to how a 50hz file would play if the resolution was
>>>> set to
>>>>> 60hz
>>>>>
>>>>> Other HD channels such as ITV1 HD and Ch4 HD play back smoothly and
>>>> so do
>>>>> other HD formats such as 24p blu-ray ripped files and non HD
>>>> channels.
>>>>> I've tried changing the deinterlacer, switched from VDPAU
>>>> High/Normal/Slim.
>>>>> I've also re-installed the Nvidia drivers.
>>>>>
>>>>> Before I go and waste another ?100 on a replacement card, just
>>>> wondered if
>>>>> there's anything I may have missed, or test the card to see if that
>>>> is where
>>>>> the fault lies?
>>>>>
>>>>> mythtv version is fixes/0.26.0-82-g8f8274a
>>>>>
>>>>> Graphic card is Nvidia Geforce GT430
>>>> Assuming you're running Master,
>>>> http://code.mythtv.org/trac/ticket/11356 .  This seems to have been
>>>> introduced with the latest ffmpeg resync.
>>>>
>>>> Jim
>>>> _______________________________________________
>>>> mythtv-users mailing list
>>>> mythtv-users at mythtv.org
>>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>> That's almost certainly caused by commit 590f161. I've updated the
>>> ticket. Hopefully that can be reverted and BBC HD will play back
>>> correctly again.
>>>
>>>
>>> ------------------------------
>>>
>>> Message: 2
>>> Date: Sun, 20 Jan 2013 10:49:07 +0000
>>> From: nospam312 <nospam312 at gmail.com>
>>> To: Discussion about MythTV <mythtv-users at mythtv.org>
>>> Subject: Re: [mythtv-users] Mythbuntu Theme Does Not Update Watch
>>>     Recordings Title/Description (Works Fine In Terra)?
>>> Message-ID:
>>> <CAM7MkrNPy=-o_O4JX9f46dj5OoXpHnC-XjrHVFiSncjJMTii2w at mail.gmail.com>
>>> Content-Type: text/plain; charset=ISO-8859-1
>>>
>>>> You are probably using the wrong theme painter. I forget which one to
>>>> use (I
>>>> think it's QT themepainter), but try the other one.
>>> Thanks OpenGL instead of Qt fixed it for my configuration.
>>>
>>>
>>> ------------------------------
>>>
>>> Message: 3
>>> Date: Sun, 20 Jan 2013 11:39:51 +0000
>>> From: Paul Gardiner <lists at glidos.net>
>>> To: Discussion about MythTV <mythtv-users at mythtv.org>
>>> Subject: Re: [mythtv-users] Jerky playback on BBC HD Chennels
>>> Message-ID: <50FBD787.7060406 at glidos.net>
>>> Content-Type: text/plain; charset=UTF-8; format=flowed
>>>
>>> On 20/01/2013 10:26, Paul Gardiner wrote:
>>>> Jim Stichnoth <stichnot at gmail.com> wrote:
>>>>
>>>>> On Sat, Jan 19, 2013 at 9:15 AM, Jason Kitching
>>>>> <jason at jadrallypix.me.uk> wrote:
>>>>>> Recently developed a problem with jerky playback on BBC HD channels.
>>>>>>
>>>>>> Whether it's Livetv or pre-recorded, including historic recordings
>>>>> that up
>>>>>> until earlier in the week played back correctly, but now the 
>>>>>> playback
>>>>> is
>>>>>> juddery, jerky.
>>>>>> It looks similar to how a 50hz file would play if the resolution was
>>>>> set to
>>>>>> 60hz
>>>>>>
>>>>>> Other HD channels such as ITV1 HD and Ch4 HD play back smoothly and
>>>>> so do
>>>>>> other HD formats such as 24p blu-ray ripped files and non HD
>>>>> channels.
>>>>>> I've tried changing the deinterlacer, switched from VDPAU
>>>>> High/Normal/Slim.
>>>>>> I've also re-installed the Nvidia drivers.
>>>>>>
>>>>>> Before I go and waste another ?100 on a replacement card, just
>>>>> wondered if
>>>>>> there's anything I may have missed, or test the card to see if that
>>>>> is where
>>>>>> the fault lies?
>>>>>>
>>>>>> mythtv version is fixes/0.26.0-82-g8f8274a
>>>>>>
>>>>>> Graphic card is Nvidia Geforce GT430
>>>>> Assuming you're running Master,
>>>>> http://code.mythtv.org/trac/ticket/11356 .  This seems to have been
>>>>> introduced with the latest ffmpeg resync.
>>>>>
>>>>> Jim
>>>>> _______________________________________________
>>>>> mythtv-users mailing list
>>>>> mythtv-users at mythtv.org
>>>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>> That's almost certainly caused by commit 590f161. I've updated the
>>>> ticket. Hopefully that can be reverted and BBC HD will play back
>>>> correctly again.
>>> Damn! Not as it happens. Someone has tried reverting 590f161 and not
>>> fixed it. Strange, because I'd have expected 590f161 to break BBC
>>> HD even without seeing the report of a problem.
>>>
>>> P.
>>>
>>>
>>> ------------------------------
>>>
>>> Message: 4
>>> Date: Sun, 20 Jan 2013 11:49:21 +0000
>>> From: Thomas Boehm <mythtv-users at lists.boehmi.net>
>>> To: Discussion about MythTV <mythtv-users at mythtv.org>
>>> Subject: Re: [mythtv-users] SMARTD reports a drive issue with a MythTV
>>>     Storage drive
>>> Message-ID: <50FBD9C1.7030204 at bla.boehmi.net>
>>> Content-Type: text/plain; charset=ISO-8859-1
>>>
>>> Ben Kamen wrote:
>>>> So SMARTD reported to me this morning that last night (probably
>>>> recording a show):
>>>>
>>>> CurrentPendingSector bumped up from 0 to 1
>>>>
>>>> and
>>>>
>>>> OfflineUncorrectableSector bumped up from 0 to 1.
>>>>
>>>> I run 2 drives for Myth but NOT in a RAID. So 1/2 of my TV recordings
>>>> are on one drive.
>>>>
>>>> What's the best method for backing this drive up so myth doesn't
>>>> complain?
>>> Are you sure you need to replace that disk because of one (1) faulty
>>> sector? Modern hard disks have enough spare sectors to remap a few
>>> faulty sectors and mark them and this what might have happened already
>>> (OfflineUncorrectableSector). Does this sector still show as pending or
>>> did Reallocated_Sector_Ct increase by 1?
>>>
>>> You might want to keep an eye on the amount of faulty sectors, but I
>>> wouldn't replace that drive yet.
>>>
>>>
>>> ------------------------------
>>>
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>
>>> End of mythtv-users Digest, Vol 118, Issue 66
>>> *********************************************
>>
>> Just to give some more info from the earlier useful replies,
>>
>> No obvious errors in the backend or frontend logs.
>>
>> Sound is via the hdmi on the card. Guess I could try switching to a
>> separate spdif lead
>>
>> I'll keep an eye on the commit 590f161 and daily fixes and see how it 
>> goes.
>
> If you are building from source, you might try git-bisect.
>
> P.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://www.mythtv.org/mailman/listinfo/mythtv-users
FWIW This fault developed for me on 0.26 fixes when I installed the 
mythbuntu repository of the 16th.

The memory leak fix of the 13th improves my frontend stability 
considerably so I was stuck!
I had to work out how to build from source and back out the following 
change.

3c8d88a Temporary fix for #11159: Fix playback of HD-PVR recording.
Jan 13.
I fixed it by removing that change.
download the git repositery
git revert 3c8d88ac55c2b2c1bc652076d7824529254829a4
make
sudo make install
Building from source is easy but it was quite difficult to install the 
programs onto a mythbuntu system and get
the correct executables running.
If you need instructions ask.