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

Robert Tsai rtsai1111 at comcast.net
Tue Jul 5 09:20:59 EDT 2005


On Tue, Jul 05, 2005 at 10:31:56PM +1000, 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";

Does the "Recording Profiles" screen not provide a sufficient GUI for
this SQL statement? It should be somewhere under "Setup -> TV",
depending on your menu theme. Many other options are also available,
in addition to choice of video codec ...

> 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?

--Rob
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