[mythtv-users] Recoding in native TS format and Setup with ATSCas DVB card

Andrew Chung acchung at techie.com
Fri May 6 06:25:09 UTC 2005


So the .nuv file format is just a wrapper over the real .TS?  If that's the
case that would be great!  Would the myth transcoder tool be able to unmunge
the file?  Is it possible to automatically do this?  What is the benefit of
keeping the recoding in .nuv format?

I think I have the channel guide stuff working now.  It was a bit confusing
to have to manually dig through the MySQL database.  Especially since I
don't know the organization nor do I know how to use SQL.  I imported a few
more stations and tried running mythfilldatabase again.  I found out that if
you modify the XMLTVID tag after a mythfilldatabase the new data will not be
seen in the guide until the original guide data expires.  I figured this out
by seeing nothing on my channel 11, even though I fixed the XMLTVID tag
value, until I scrolled forward a few days. 

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Howard Cokl
Sent: Thursday, May 05, 2005 05:16
To: Discussion about mythtv
Subject: Re: [mythtv-users] Recoding in native TS format and Setup with
ATSCas DVB card


--- Andrew Chung <acchung at techie.com> wrote:
> Hi everyone.  I just started exploring MythTV so please bear with me 
> if I ask a question that has already been answered.  I've tried 
> Googling and reading as much as I can but my eyes are starting to 
> bleed!
>  
> Is it possible to have MythTV record to a raw .TS file instead of its 
> native .nuv format?  What is the difference between these two file 
> formats?  My goal is to archive shows on a permanent basis and I would 
> prefer to get either a raw .TS or a pure MPEG-2 from the transport 
> stream.
> Also I'm checking the option on the video input to save as .ts instead 
> of .ps.  What does this actually do?
>  
>  
> My second question is a setup question.  I've been struggling with 
> getting the Linux system stable and to get my 2 pcHDTV HD-3000 cards 
> working.  Took me a while but those seem to be working fine.  When it 
> came to installing MythTV the online docs were pretty good, except for 
> the part where you add channels.
>  
> Initially I signed up for Zap2It and performed a mythfilldatabase as 
> the manual instructed.  However I was never able to get any channels 
> to tune.  A few days later I figured out that I can do an ATSC tune 
> and I was able to see all my local OTA channels.  At this point 
> however, I had a disconnect between the guide information and some 
> tunable channels.  The guide couldn't tune, and the tuneable channels 
> had no guide!
> Tonight I tried taking the
> XMLTVIDs from the Zap2It guide.  I purged the database and started 
> with a clean one.  I then scanned my OTA channels.  After scanning I 
> manually set the XMLTVID values for each of my channels.  Is this the 
> way it works or am I missing something fundamental here?
>  
> Been having fun trying to get this working!
>  
> Andy

Andy,
    AFAIK myth does record from ATSC cards in either ts or ps, the nuv
extension doesn't affect what the file actually is.  
file 2005_20050427220000_20050427230000.nuv
2005_20050427220000_20050427230000.nuv: MPEG transport stream data

I record mine using .ts simply because my box is underpowered to begin with
and I think that recording in .ps involves more processing but a smaller
file.

I think you are on the right track for your channel setup.  What I did was
have mythtvsetup scan for the ATSC channels in the channel editor, added the
xmltvid from the zap2it channels to the scanned channels and then marked all
of the zap2it channels invisible so that only the scanned channels show up
in the program guide.

Howard



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