[mythtv-users] Failed to initialize A/V Sync

Josh Norell josh at kci.net
Wed Apr 13 22:39:40 UTC 2011

On 04/07/2011 12:13 PM, Josh Norell wrote:
> On 04/07/2011 10:56 AM, Mark Lord wrote:
>> The failures seem to have some kind of timing dependency or trigger.
>> My main box uses a PVR-250 for OTA analog stuff, and if I change channels
>> too quickly, the frontend locks up.
>> "Too quickly" here means more than one channel change within
>> about a 5-7 second interval.
>> This system does use an external channel change script,
>> calling out to ivtv-tune to actually set the new channel
>> after first rearranging the antenna array.
>> I find that adding small amounts of "sleep" after the ivtv-tune
>> seems to help things (not perfect but much better), but anything
>> larger than about 1 second kills it all again.
>> Just under 5 months to go before the death of analog OTA here now.  :)
> I too find that if I wait a number of seconds before I change the
> channel again, it seems more reliable.
> Unfortunately I'm using the freebox/iptv tuner, so there's no external
> command to add a sleep into. I wonder if it would be more reliable the
> frontend waited a second longer before trying to play the ring buffer. I
> would add a sleep in there, but I'm not too sure about how to do that.
Can anyone else offer some help?

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