[mythtv-users] LiveTV Shuttering & Squeaky Audio

Steven Ellis steven at openmedia.co.nz
Thu Mar 15 02:05:30 UTC 2007

Paul McEnery wrote:
> I was wondering if anyone has come across this problem before. I am
> running mythtv-trunk r12632 with a DVB-C card (TT C2300). I am able to
> successfully lock onto all channels found during a scan, and 95% of
> the channels work correctly. About a dozen channels (out of about 150)
> are shuttering and the audio is squeaky.
> I installed mplayer to see if it can lock onto these channels. mplayer
> is able to play the stream, but soon freezes (+- 1 minute) if I don't
> add the -cache 8192 flag. This would seem to indicate that mythtv is
> not doing enough buffering, but I am not sure why only a few channels
> are displaying this symptom. I have just read about the "aggressive
> audio buffering" option in mythtv-setup, but haven't tried it yet. I
> wont have a chance to test this for a couple of day, but thought I
> would get a couple of views from the wider community.
> The log output is pasted below (trimmed as much as possible). I tried
> googling some of the messages therein, but they didn't lead to any
> particular conclusion.
> Any assistance, or pointing in a specific direction would be much appreciated.
I'm seeing some similar problems with DVB-S streams. I'll try and pull a
bug report together.

Are you still seeing it and what release are you on as I have been
running off 0.20-fixes


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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