[mythtv-users] Jerky playback on BBC HD Chennels

Paul Gardiner lists at glidos.net
Sun Jan 20 13:35:08 UTC 2013


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.


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