[mythtv-users] Jason Beck's QAM guide Now on the Wiki

[Dylan R. Semler]

Ian Forde wrote:

>On Mon, 2006-02-06 at 23:12 -0500, Dylan R. Semler wrote:
>  
>
>>Ian Forde wrote:
>>    
>>
>>>I tried, but it kept failing on all of the channels.  I ended up
>>>modifying it to work for me.  Instead of running 'time' on mplayer, I
>>>grepped mplayer's output for "Starting playback".  I got better results,
>>>but I still ended up with a bunch of music channels.  (Incidentally,
>>>what was failing in the original was mplayer.  The line:
>>>
>>>'echo | time -o time.dat mplayer $tempdir/test.mpg >& /dev/null'
>>>
>>>was exiting too quickly.  Even when trying it on 2 different systems...
>>>The output from time.dat was:
>>>
>>>0.01user 0.01system 0:01.76elapsed 1%CPU (0avgtext+0avgdata
>>>0maxresident)k
>>>0inputs+0outputs (63major+1063minor)pagefaults 0swaps
>>>
>>>      
>>>
>>It's meant to end quickly for encrypted channels (cause mplayer can't 
>>play them).  Did you try it specifically on a non-encrypted channel and 
>>it still ended too quickly?  It's not too important because using grep 
>>will do the job, but like you said, it won't get rid of the music 
>>channels.  In theory using time will be able to get rid of the music 
>>channels too.
>>    
>>
>
>I even tried it on an avi file that mplayer will play normally.  This
>would work:
>
>mplayer /usr/bin/somefile.avi
>
>This wouldn't:
>
>echo | time -o time.dat /usr/bin/mplayer somefile.avi
>
>So what I did was modify your script to get a 5 second capture from all
>of the channels on the scan.  Some of those were music channels.
>mplayer can even play some of those files, so I'm not sure that that's
>the answer either.  So right now I'm sitting on 54 mpg files that I've
>got to check manually.  This *REALLY* sucks. ;)
>
>	-I
>
>  
>
Ok, well that does suck.  There must be some difference between our 
versions of time or perhaps something in our configurations.  This is 
beyond my very small understanding of Linux.  Sorry I couldn't help more.

Dylan