[mythtv-users] Recordedmarkup corrupt - consequences ?

[cmisip]

Thanks for replying.  What is a GOP and why do I need it?

How does one strip commercials with avidemux?

I am also trying to convert the recordings into a format playable in a
zaurus 5600.  By rebuilding the recorded markup with mythcommflag, does
this automatically mark the beginning and end of commercials so
nuvexport can use this information? I expect running mythcommflag on a
system with about 420 gigs of storage (90 % full) will take a long time.
I wonder if it is worth it.  I need to compress videos so they will fit
on a compactflash.  So far I have been able to compress 1 gig to 100 mb
with good quality.  Removing commercials automatically will further
reduce the file size but I dont want to sit and manually mark the
commercials.  

What is the state of commercial detection in mythtv? 






On Thu, 2004-02-19 at 22:26, Andrew Dodd wrote:
> Quoting cmisip <cmisip at insightbb.com>:
> 
> > My mythtv has been misbehaving lately.  It has been missing scheduled
> > recordings, mythfrontend sometimes cannot connect, and the error message
> > shows "Readstringlist timeout".  I tried to backup the database and it
> > complained about "errno 145" with recordedmarkup.  I did a "repair table
> > recordedmarkup" in mysql. 
> > 
> > What are the consequences of this? What does recorded markup do?
> It is used for the following, among other things:
> Automatic commercial detection/flagging (Positions of blank frames, scene
> changes, and calculated commercial cuts are stored in recordedmarkup)
> Seeking in MPEG-2 (and probably other video types) - The position of the
> beginning of each GOP is stored in recordedmarkup.
> 
> Clearing out recordedmarkup and running mythcommflag will redo everything but
> the GOP markup.  Unfortunately despite what I was once told when I asked a
> similar question, mythcommflag does NOT refill the GOP information if it has
> been deleted (at least not on my machine).  I don't know of a way to do this
> currently.  (Please let me know if there is a way to do this, as I'd love to
> strip commercials with avidemux and then redo the markup for the resulting
> edited file.)
> 
> > I notice that since the upgrade to myth .14, I notice hard drive
> > activity when there are no current recordings.  Is myth trying to
> > rebuild something or convert something? I have not configured it to
> > transcode. 
> > 
> > If so, what is a safe way to shutdown myth?
> If you have automatic commercial detection enabled, the commercial detection is
> run after a recording ends.  The routine is set up to sleep a certain amount
> after each frame, so not only will any CPU usage show as being nice, it will not
> be 100% either.  (Any particular reason not to run it at 100% and nice 20
> instead?)  It's about 10-20% CPU constant usage on my 1.1 GHz Athlon tbird, and
> usually that happens for 1.5 hours for every hour of recording.
> 
> 
> 
> 
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