[dvblast-devel] Stuck with PCR_ACCURACY errors

[Georgi Chorbadzhiyski]

On 21.7.2012 г. 18:50, Sasha Z wrote:
> I am trying to figure out why I keep getting PCR_ACCURACY error on my
> output stream.  I've tried every possible combination of  /latency
> /retention but I keep getting those errors.  I"m using stream expert
> from Dektec and I also use Tsreader, I get the same errors.  Here is
> my example of command and conf file.
>
> dvblast -D 239.0.0.4:4444/udp/ifaddr=10.10.10.104 -c test.conf
>
> test.conf
> 10.10.10.199:1235/ifaddr=10.10.10.104 0       7002
>
> My error is the following:
>
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: -8.7ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: -8.5ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: -8.6ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: -7.7ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: -7.7ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: -7.1ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: 3.4ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: 3.1ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: 2.9ms) [PCR_accuracy_error]
> 2012-07-21 11:49:50 Maximum allowed PCR accuracy on PID 7011 has been
> exceeded (allowed: ±500ns, actual: 1.8ms) [PCR_accuracy_error]
>
> I know this isnt support but DEVEL, but I couldnt find the support mailer.
>
> Any help would be amazing here.  Thanks.

Since dvblast regenerates PSI tables (removes & insert packets at different places)
it is not unexpected for stream analyzer to notice that PCRs are not 100% correct.
However in practice this is not a problem, and you can safely ignore the above
warnings.

-- 
Georgi Chorbadzhiyski
http://georgi.unixsol.org/