[mythtv-users] Anyone tried MPEG2 to MPEG2 transcoding?

Joseph A. Caputo jcaputo1 at comcast.net
Wed Jul 6 12:15:43 EDT 2005

On Tuesday 05 July 2005 8:31, Phill Edwards wrote:
> Looking through the archives I've found that it's possible top set up
> MPEG2 to MPEG2 automatic transcoding by issuing the following update
> command in mysql:
> update recordingprofiles set videocodec = "MPEG-2" where name = 
> "MPEG2"; 
> I want to give this a go because I want to keep my recordings in MPEG2
> format but want to reduce the size of the recordings. I can't adjust
> the original recording profile because I'm using DVB-T capture cards
> which don't encode, they just dump the broadcast MPEG2 stream straight
> to disk. So I figure I can reduce the size of them by transcoding to a
> lower bit rate MPEG2 file. I need them in MPEG2 format to work on my
> xbmcmythtv python scripts frontend.
> The question is - has anyone tried this, and what were your results? I
> read a post that said the reason you have to enable it via a mysql
> command is because it can be a bit dodgy which is why it's not turned
> on by default. Should I expect that it's going to play up quite badly
> and defrost my freezer overnight, or will it be OK?

Hmmm, unless there's special code to handle MPEG2->MPEG2 transcoding, 
I'd guess that you'd end up with a Myth NuppelVideo container format 
file, with MPEG2 video and either raw or MP3 audio.  Probably *not* 
what you're looking for.


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