[mythtv-users] mythjobqueue commflagging startup delay?

[Michael T. Dean]

On 02/11/2012 11:51 AM, Jim Stichnoth wrote:
> On Sat, Feb 11, 2012 at 8:28 AM, Raymond Wagner wrote:
>> On 2/11/2012 11:00, Brian J. Murrell wrote:
>>> I'm running mythjobqueue on another machine to do commflagging and I've
>>> noticed what seems to be a delay in processing.  Let me give you an
>>> example:
>>>
>>> 2012-02-11 10:30:22.919551 I  JobQueue: Commercial Detection Starting for "This Old House":"This Old House Barrington Project, Part 2 of 10" recorded from channel 4024 at 2012-02-11T10:30:00
>>> 2012-02-11 10:30:25.451068 C  mythcommflag version: master [v0.25pre-4426-g52d2827] www.mythtv.org
>>> 2012-02-11 10:40:54.519037 I  Finding Logo
>> I believe there is an intentional 10 minute delay when running
>> commercial flagging live behind a recording.
> For whatever reason, the commflagger wants to wait by default until at
> least 624 seconds has recorded until starting logo detection.  See the
> calculation of commDetectLogoSecondsNeeded in ClassicLogoDetector.cpp.

Because the logo detection code requires a significant number of frames 
to accurately identify any logos to use for logo detection.

If it's really a problem for you, disable logo detection commercial 
detection method.  Or, feel free to try out the gpu-commflag branch, 
which has an unfinished rewrite of commercial detection, which includes 
a different logo detection algorithm that tries to identify logos 
without having to scan a huge number of frames.  But note that that 
branch isn't expected to work, so it's probably a bit premature for bug 
reports.

Mike