[mythtv-users] Sound Issues on Live TV

[Taylan Pince]

On 19-Nov-06, at 7:57 PM, Brad DerManouelian wrote:

> On Nov 19, 2006, at 3:51 PM, Taylan Pince wrote:
>
>>
>> On 19-Nov-06, at 3:56 PM, Brad DerManouelian wrote:
>>
>>> On Nov 19, 2006, at 12:51 PM, Taylan Pince wrote:
>>>
>>>> Pausing, or rewinding doesn't work at all. It only comes back if I
>>>> leave the playback, go back to the menu, and start playing again. I
>>>> noticed that it doesn't only happen with Live TV anymore, it's the
>>>> same with recorded shows.
>>>>
>>>> The important thing to note is, the sound is fine on all  
>>>> recordings.
>>>> Even if I lose the sound while playing back, the information is
>>>> there, so if I leave and come back, it plays back normally.
>>>>
>>>> The sound card is the generic one that's on my motherboard, I
>>>> believe
>>>> it's Intel. I don't think the issue is related to that, as I have
>>>> been using it for months without issues.
>>>>
>>>> Thanks again for your help.
>>>>
>>>> Taylan
>>>
>>> Is there anything indicating a problem in your logs? It sounds like
>>> it's losing control over your device for some reason or another and
>>> it needs to close/reopen the device to get it back. Also, are you
>>> using ALSA or OSS?
>>
>> After some digging, I found this message:
>>
>> NVP : : AddAudioData():p1: Audio buffer overflow, audio data lost!
>>
>> I am using ALSA, as it is the default in the Fedora Core kernel that
>> I have.
>>
>> Could this be a performance issue? I ran this machine with 256MB of
>> RAM for months, and it didn't have any problems. Now it has 768MB,
>> and a whole lot more hard drive space (recently added another 400GB
>> to LVM). So I am not sure why there would be an overflow problem.
>>
>> Thanks again.
>>
>> Taylan
>
> There's an option to increase your audio buffer for playback. You
> might need to enable that. I'm sorry I don't remember off the top of
> my head where that option is, but I seem to remember it being in TV
> Playback. Extra Audio Buffering I think it's called.

I found that after sending my previous message. Turned it on  
immediately, and it seemed to work for an hour without issues. Now  
it's back though, having the exact same problem again, about every 5  
to 10 minutes.

While researching possible causes of audio buffer overflow, I found a  
message saying closed captioning might be the culprit. I am not  
exactly sure how to turn it off though.

Taylan