[mythtv-users] Transcode

[Matthew Asplund]

OK, just a quick followup question.  I am trying to make sensible
transcoding rules, and I'm not having much luck.  Here are the parameters.
my FE/BE is a 1GHz P3, and my card is a PVR-150.  Currently my recordings
are taking about 2GB per hour.  I was hoping to cut the sturage needs in
half.  I turned the RTJPEG quality down to 50 (from the default 170) and it
was small, but the quality was bad.  I wasn't sure if the MPEG4
encoding/decoding would be CPU intensive for my old P3.

Matthew Asplund


On 12/23/06, Matthew Asplund <mattasplund at gmail.com> wrote:
>
> Thanks.  That did the trick.  I was trying to use the medium setting, and
> I guess that I never set it up correctly.  I switched to autodetect, and
> thing are great.
>
> Matthew Asplund
>
>
> On 12/23/06, Dewey Smolka <dsmolka at gmail.com> wrote:
> >
> > On 12/23/06, Matthew Asplund <mattasplund at gmail.com> wrote:
> > > Here is the log file for a sample job
> > >
> > > 2006-12-23 08:18:58.694 JobQueue: Transcode Starting for The Simpsons
> > <snip>
> > > 2006-12-23 08:19:02.641 AFD: Opened codec 0x812b5e0, id(MP2)
> > type(Audio)
> > > 2006-12-23 08:19:03.064 Unknown video codec:
> > > 2006-12-23 08:19:03.070 Transcoding
> > > /home/data/mythtv/1011_20061221180000.mpg failed
> >
> > Your problem is most likely that you don't have your transcode
> > profiles properly set up.
> >
> > You can find your current transcode profile settings by running the SQL
> > command:
> > mysql> select r.* from recordingprofiles r,profilegroups p where
> > p.name='Transcoders' and p.id=r.profilegroup;
> >
> > This should give you something that looks like this:
> > +----+----------------+------------+------------+--------------+
> > | id | name           | videocodec | audiocodec | profilegroup |
> > +----+----------------+------------+------------+--------------+
> > | 21 | RTjpeg/MPEG4   | MPEG-4     | MP3        |            6 |
> > | 22 | MPEG2          | MPEG-4     | MP3        |            6 |
> > | 27 | High Quality   | MPEG-4     | MP3        |            6 |
> > | 28 | Medium Quality | MPEG-4     | MP3        |            6 |
> > | 29 | Low Quality    | MPEG-4     | MP3        |            6 |
> > +----+----------------+------------+------------+--------------+
> > 5 rows in set ( 0.01 sec)
> >
> >
> > You need to set up your transcode profiles by going to Utilities/Setup
> > -> Setup
> > -> TV Settings -> Recording Profiles -> Transcoders.
> >
> > For example, I use a PVR-250, so as a default I use the Autodetect
> > from MPEG2 profile. The default settings should work fine.
> >
> > You also need to set the default transcoder in: Utilities/Setup ->
> > Setup - TV Settings -> General (page 3 or so).
> > _______________________________________________
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> >
>
>
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