[mythtv-users] commflagging and cutlists

[Yan Seiner]

On 01/18/2014 12:53 PM, Michael Stucky wrote:
> On Sat, Jan 18, 2014 at 3:15 PM, Yan Seiner <yan at seiner.com 
> <mailto:yan at seiner.com>> wrote:
>
>     I guess I am confused about commflagging.  I always assumed that
>     commflagging and cutlists went hand in hand...  However, I am
>     playing with commflagging and I am coming up with some weird
>     results that tell me I have no idea how commflagging works.
>
>     First off the standard myth commflag job as run by myth:
>
>     /usr/bin/mythcommflag -j 31 --noprogress --verbose general
>     --loglevel info --quiet --syslog local7
>
>     This takes a while; on my system it rolls through at 3-4x the
>     speed of the video, so a 2 hour video takes about a half an hour
>     to flag.
>
> This flags the places that Myth thinks there are commercials (this 
> will take a while unless you have enough processing power to enable 
> commflag while recording). This may or may not accurately locate 
> commercials. For me, living in the US, this is only used as a starting 
> point for using the editor to create a usable cutlist.
>
>     But to generate a commercial cutlist this is the command I've seen:
>
>     mythcommflag: /usr/bin/mythcommflag --chanid 1132 --starttime
>     20140117230000 --gencutlist
>
>     It's very fast, takes just a minute or two, and seems to flag
>     commercials.  it also generates the following warning:
>
>     ****************************************************
>      WARNING: --gencutlist has been deprecated
>               use mythutil instead
>     ****************************************************
>
>     So I've tried this:
>
>     mythutil --chanid "$chanid" --starttime "$starttime" --gencutlist
>
>     which also works quickly and generates a cutlist.
>
> Both of these jobs take the flagged locations from the myth commflag 
> job and convert them into a cutlist. And again, you should be careful 
> about creating cutlists this way unless you are  sure the commflag job 
> is accurate.
>
>     So what is the correct procedure?  Do I run the first commflag
>     job, then the mythutil cutlist job?
>
> I have the commflag job setup to run while myth is recording the 
> program. After the recording finishes I go into the editor and 
> adjust/add/delete startpoints and endpoints as needed to create an 
> accurate cutlist.
Once you tweaked the start/stop points do you run mythutil 
--gencutlist?  Or straight into mythtranscode?


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