[mythtv] Re: Software AC3 decoding when watching TV

Marcus Metzler mocm at mocm.de
Wed Dec 15 16:52:11 UTC 2004


>>>>> "Taylor" == Taylor Jacob <rtjacob at earthlink.net> writes:

    >> Does it have to be replaced or can't we just record TS. That
    >> would make many things easier. What is the problem with TS?

    Taylor> Nothing really.. I know the ivtv decoder (pvr-350) can't
    Taylor> handle TS.. Down the road the pchdtv recorder and dvb
    Taylor> recorder are hopefully to be merged at least the common
    Taylor> parts included in a base class.. Daniel is supposed handle
    Taylor> the stipping of the TS, and the dvb side of things was to
    Taylor> use a PES.. At least that is what Daniel and I had
    Taylor> discussed a while back..

    Taylor> If I remember right the nuvexport stuff also works much
    Taylor> better with PES than TS..

    Taylor> One other reason to save it as PES is the MediaMVP (and
    Taylor> probbably other boxes) can only handle a PES not a TS so
    Taylor> saving the stream as a TS would make it impossible to use
    Taylor> lightweight hardware such as those boxes.. (This of course
    Taylor> is releated to the ivtv issue above since I think they
    Taylor> both Happauge cards/boxes use the same chipset.. Either
    Taylor> way I would much rather support both than just 1.. If the
    Taylor> PES is fixed for DVB it can go into myth in my opnion if
    Taylor> PES is taken out and replaced with TS then it may break
    Taylor> some functionality that I am not aware of so I think PES
    Taylor> needs to stay..

Demuxing a TS into PES on playback is not that hard or time
consuming. It is just that you lose a lot of information if you save as PES.
It is done in the DVB FF cards drivers all the time.

Marcus

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| Dr. Marcus O.C. Metzler        |                                   |
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