[mythtvnz] Off Topic - CCTV cameras

[Chris Robertson]

On 8/07/2010 4:26 p.m., Nick Rout wrote:
> On Thu, Jul 8, 2010 at 3:40 PM, Steve Hodge<stevehodge at gmail.com>  wrote:
>    
>> On Thu, Jul 8, 2010 at 3:26 PM,<criggie at criggie.dyndns.org>  wrote:
>>      
>>> It does have mono audio in, but none of my cameras have microphones so
>>> its really irrelevant to me.
>>>        
>> Ah, that's a problem. I don't think I'd be willing to live with mono. I
>> guess it would be possible to record the audio separately and then remux it
>> into the h.264 stream but it'd be hard to get the sync right.
>>
>>      
>>> The PVR150 is a nice card - what's wrong with yours ?
>>>        
>> The audio gets very distorted and full of static when starting a recording.
>> It's apparently not that unusual as I easily found a work-around on the net:
>> resetting the audio with
>> v4l2-ctl --set-audio-input 1 -d /dev/video0
>> fixes the problem. But it didn't used to exhibit the issue at all and then
>> for a while it was intermittent. So I suspect the hardware. And there has
>> been one case where resetting the audio didn't work and I had to reboot to
>> fix it.
>>      
> I had the tinny audio problem, but no longer use the card.  Your fix
> (cronned to happen every 10 seconds) 'fixed' it.
>
>    

I see this audio problem occasionally as well - definitely think it is a 
driver issue rather than a hardware problem, as (for me) it appeared 
immediately after upgrading to 0.21. No obvious pattern to it, but 
changing channels several times in LiveTV will trigger it almost every time.

Cheers,
Chris