[mythtv] DVB: Heads up! PS format deprecated - TS now usedbydefault

frosts1 at hotkey.net.au frosts1 at hotkey.net.au
Sat Oct 8 12:33:42 UTC 2005

Quoting Torbjörn Jansson <torbjorn.jansson at mbox200.swipnet.se>:

> frosts1 at hotkey.net.au <mailto:frosts1 at hotkey.net.au> wrote:
> > ringbuffer overflow 120<184 629145
> > ring buffer overflow 629145
> This looks very familiar :-)
> When i was using replex this happend all the time on recordings that
> sometimes have bad reception (minor blockiness sometimes)
> Anyway, this is not a mythtv problem.

I agree it is not a myth problem, but if myth needs to produce PS recordings in
order to be able to archive to DVD, removing PS makes mythtv less useful which
is why I raised the issue in this thread.

> TS is better than PS atleast wiht mythtv, PS used to create broken
> recordings on my dvb card.
> But my dvb card is one of those dvb-ttpci cards that are very sensitive to
> the powersupply, bad power supply causes bad reception on some channels
> (different channels on different psu:s)
> I have tried 3-4 psus before i found one that works, the picture is still
> not perfect but good enough.

I dont think it is a reception issue (could be wrong) my box has been rock solid
recording PS with 0.18.1 (KnoppMyth) for a long time. I have however seen
problems where the stream appeared to be corrupted/broken, but only recording
high def channels. Switching to TS fixed that, but broke the ability to create
DVDs using nuv2disc from my standard def recordings, so I switched back to PS
and stuck with standard def channels (I don't have the grunt for HD anyway).

Quoting Greg Estabrooks <greg at phaze.org>:

>  Try the libdvb(dvb-mpegtools) mpeg tools. Specifically ts2ps.
>     cat source-ts.mpg | ts2ps dest-ps.mpg 0 0
>           or
>     ts2ps dest-ps.mpg 0 0 < source-ts.mpg
>  Works great for me where replex had several issues.
>  I don't burn them to DVD, but this will at least get you a mpegps file.
>  Oh, I should point out that the pids of 0/0 there tell it to 
> attempt to automatically pick what pids you want.   You can specify
> them if the auto choices are not what you want.

Thanks. I'll give that a go when I get the chance and report back. I'm hoping my
commercial cutter
(http://www.knoppmythwiki.org/index.php?page=CrudeMPEG2cutForDVB) works with the
TS format too. If I can get it to work, I'll work on the tweaks required for

Greg Frost

More information about the mythtv-dev mailing list