[mythtv-users] Mytharchive errors

[Paul Harrison]

Nick Rout wrote:
> On Tue, Dec 9, 2008 at 12:14 PM, Harry Devine <lifter89 at comcast.net> wrote:
>   
>> Nick Rout wrote:
>>     
>
>   
>>> as I said try the ffmpeg line from the command line and check the
>>> output, which should give a better error message.
>>>
>>> midentify only identifies what codecs and formats the original file is in.
>>> _______________________________________________
>>>
>>>       
>> I did that last week, and it ran for 24 hours before I killed it.
>> Should I let it run for 48 hours?  Maybe 72? ;-)
>>     
>
> just looking at the command I see that part of it is "-i
> /tmp/work/1/audout" - this means it is using the file
> /tmp/work/1/audout as its input (-i) - I suspect that
> /tmp/work/1/audout is a pipe or something [1] and there should be
> another command filling it. If the (filling) other command isn't
> running then the command you are running will sit around forever
> waiting for input from /tmp/work/1/audout.
>
> I'd need to have a look at the whole mytharchive script to debug
> further, but I don't have it here.
>
> The other option is to look at the file where mytharchive keeps its
> logs - something like /var/lib/mytharchive/log. There are at least two
> log files, a summary and a detailed. I think only the summary goes to
> the screen, leaving a bigger and better log in the directory.
>
>   

Nick is right you need to run mythtranscode to create the fifos before 
running ffmpeg.

Something like :-
mythtranscode -p 27 -i INPUTFILE -f OUTPUTFOLDER

where INPUTFILE is the name of the file you want to transcode and 
OUTPUTFOLDER is the directory where  the fifos should be created. Then 
run the ffmpeg command. ffmpeg reads the decoded video and audio from 
these fifos.

Not sure you've said what type of card you use to record but it sounds 
like you've made life hard for yourself by re-encoding  the original 
file to a nuv file. If the original recording was an mpeg2 file then 
there may be no need to re-encode the file at all. If it does need to be 
re-encoded then ffmpeg can handle both the decoding and encoding side 
for mpeg2 files. It is because ffmpeg doesn't know how to decode myths 
nuv files that we need to use mythtranscode to do the decoding which 
complicates things somewhat.
  
Paul H.