[mythtv] [mythtv-commits] Ticket #3690: Prebuffering pauses with ivtv since ffmpeg resync

Steven Ellis steven at openmedia.co.nz
Wed Jul 4 08:03:09 UTC 2007

Robin Gilks wrote:
>> #3690: Prebuffering pauses with ivtv since ffmpeg resync
>> --------------------------------------------+-------------------------------
>>  Reporter:  Hadley Rich <hads at nice.net.nz>  |       Owner:  ijr
>>      Type:  defect                          |      Status:  new
>>  Priority:  minor                           |   Milestone:  unknown
>> Component:  mythtv                          |     Version:  head
>>  Severity:  medium                          |     Mlocked:  0
>> --------------------------------------------+-------------------------------
>>  Since the ffmpeg resync - [13655] - one of my frontends has had issues
>>  playing back recordings from the PVR150 in the backend. If I roll back to
>>  13654 playback is smooth but on 13655 it's unwatchable (prebuffering
>>  pauses every 2 seconds or so). This only occurs with recordings from the
>>  PVR150, playing from the DVB cards is fine.
>>  I have three networked myth boxes;
>>  BE/FE - Intel E6300/2GB RAM
>>  FE 1  - Intel E6320/2GB RAM (the one with the problem)
>>  FE 2  - VIA MiniITX 1Ghz/512MB RAM
>>  both remote FEs are using myth streaming. Strangely enough FE 1 is the
>>  only one having issues. The other two are fine on any revision.
>>  I'm not quite sure what I can provide to assist in debugging this. If
>> logs
>>  or anything will help then please let me know and I will provide them.
>>  hads
> Glad I'm not the only one - thought it was the addition of a DVB-S card
> that was causing problems with my PVR150 but sounds like that is not the
> case...
> Note that when I hit a glitch, a rewind and replay will hit the same
> glitch, usually associated with symptoms that looks like a missing
> keyframe (i.e. a pixelated screen that builds up over 1-2 seconds into a
> complete screen again).
> Can provide logs and sample captures if required.
Looks like there were a couple of other issues around the ffmpeg sync.
Might try an SVN trunk build over the weekend to take a look myself..


Steven Ellis - Technical Director
OpenMedia Limited
email   - steven at openmedia.co.nz
sales   - sales at openmedia.co.nz
support - support at openmedia.co.nz
website - http://www.openmedia.co.nz

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