Thenmozhi, What do you use as an output device? Do you feed some hardware on the back end, or do you just generate a bitstream, store it someplace, and then use a software decoder to read it? The reason I'm asking is that typically, your TS bitrate is determined by your output medium. A 64QAM digital cable system will have a bitrate of 26970350 bps, for example. You'll have to generate enough null packets to get that bitrate. As Vinod pointed out, you'll have to worry about the T-STD. Read that part of the spec, and then read it again. Then sleep over it, and read it once more. It's nasty, but it's good for you. Cheers, Ori Vinod Kumar wrote: > Hi > yes the padding of the transport stream with the null packets will be > constrained upon the fact that the TSD buffers at the transport stream > will not overflow. > > Thenmozhi Arunan wrote: > > > > I'm not sure if this is the right mailing-list to post this query? If not > > pls redirect me to mailgroups that discuss mpeg-2 systems. > > > > In our multimedia lab, I have been working on developing a s/w > > transport stream multiplexer. I have it working and a std IRD is able to > > decode the stream. It is a single program ts generator. However, I'm not > > clear as to what should be set as the TS bitrate value. > > > > Currently, i'm setting ts bitrate = video_bitrate + audio bitrate + psi > > rate + overhead for PES/TS headers + alpha(for null packets). > > > > How can one decide on the # of null pkts that will be required for > > multiplexing? It could depend on vbv_buffer size used in mpeg-2 encoding. > > > > Your suggestions are most appreciated. > > Thenmozhi > > -- > > ---------------------------------------------------------------------------- > > Thenmozhi Arunan > > then@xxxxxxxxxxxxxxxxxxxxxxx DV012, Vigyanpura Campus, > > Multimedia Systems Lab IISc Quarters, (Opp ISRO Headquaters) > > SuperComputer Educ & Research Centre New BEL Road > > Indian Institute of Science Bangalore-560094 > > Bangalore-560012, India. KARNATAKA,India > > Office Ph: 80-309 2896. Home Ph: 341 1952 > > ---------------------------------------------------------------------------- > > > > _______________________________________________ > > Video4linux-list mailing list > > Video4linux-list@xxxxxxxxxx > > https://listman.redhat.com/mailman/listinfo/video4linux-list > > -- > Vinod Kumar MV > Research Engineer > Video Coding Group > Fraunhofer Institut für Integrierte Schaltungen > Am Weichselgarten 3, D-91058 Erlangen, > Phone : +49 (0) 9131 / 776 363 > Fax : +49 (0) 9131 / 776 999 > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list ========================== WorldGate Communications, Inc.
