[mpeg2] Re: Only _one_ TS recording possible

[Juergen Weiss <weiss@uni-mainz.de>]

Hi,

There seems to be a problem with the calculation of
the Bitrate for Transport Stream.

Setting the TransportRate to

    P->TransportRate = vidrate+RateArray[kfir->Params.AudioBitRate] * 1000;

does not seem to be correct and leads to incorrect ts pcr
fields.  The windows driver does not have a fixed relation
between BitRate and TransportRate.  With the following change,
the problem went away. Not sure, if this change solves your
problem.

        /*
         * Rate of Transport Stream
         * if choosen too low, ts pcr fields are wrong
         * is there any formula for minimal transport stream rate?
         * a factor of 1.15 seems to work for 
         * bitrates at least between 0.8 to 4.5 MBit/s
         */
        P->TransportRate = ((P->BitRate+RateArray[P->AudioBitRate] * 1000) * 115) / 100 + 80000;


Juergen Weiss

-- 
Juergen Weiss	  | Universitaet Mainz, Zentrum fuer Datenverarbeitung,
weiss@uni-mainz.de| 55099 Mainz, Tel: +49(6131)39-26361, FAX: +49(6131)39-26407