[mythtv-users] Playback problem -- random short pauses

Kevin Ross kevin at familyross.net
Thu May 12 03:00:48 UTC 2011


On 5/11/2011 7:19 PM, Kevin Ross wrote:
> On 4/26/2011 2:11 PM, Kenneth Emerson wrote:
>>
>>
>>
>>     > Putting the change in tonight and will report back later this week.
>>
>>     > This user is not using nfs.
>>
>>     >  -- Ken E.
>>
>> Changes are in, there doesn't appear to be any improvement in the 
>> stated problem.  I have the frontend running with -v playback,audio 
>> so going through the log file is tedious; however, I may have found 
>> one correlation with another process. Unfortunately, I cannot say 
>> with certainty that at these instances, I experience the pause in 
>> playback.  The next time I sit down to watch recordings, I will have 
>> paper and pencil and will write down the exact time the pauses occur 
>> so that I can try to match them up in the log file.
>>
>> The correlation I found was with the preview generation process.  I 
>> had about three of these occurrences in about three and a half hours 
>> of recording watching.  They were all similar starting with the 
>> "Ignoring PREVIEW_SUCCESS" message.  Others might look in their log 
>> files (probably need the verbosity set the same as I have) and see if 
>> they have something similar.
>>
>> Below is a snippet from my log file:
>>
>
> I'm getting lots of dropped frames following those PREVIEW_SUCCESS 
> messages.  I'm not getting pauses, but the dropped frames cause a 
> glitch in the video playback, and it gets annoying.  It happens 
> several times per show.

Actually I just increased my log level by adding -v file (to the already 
existing -v playback), and I noticed a long list of "Marked as 
'watched'" and "Not the ealiest" with all my shows, which happens at the 
same time as those "PREVIEW_SUCCESS" messages, and the dropped frames.  
I guess this is the auto-expire causing dropped frames that was already 
mentioned?

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