Re: Roku-tech Digest, Vol 7, Issue 27

Dave Dodge <[email protected]>
Newsgroups gmane.comp.hardware.roku.technical
Message-ID <20040530023801.GF6903@basmati>
On Tue, May 25, 2004 at 06:13:33AM -0700, Travis Clayton wrote:
> >Also, 169time is intended for use with DVHS recorder, so I'd think
> >that it would have to emit an MPEG2 transport stream to be useful
> >there.  But perhaps 169time is doing some processing up-front that
> >leaves the stream just "good enough" for the typical DVHS machine but
> >not the HD1000.
>
> That's what I was getting at.  The 169 AVX piece is probably creating an 
> MPEG2 transport stream and it is probably just not perfect.

>From a quick look at BJ's samples, the files definitely have just
minimal information in them. There's a small PAT and PMT, and the
rest is data (well, along with lots and lots and lots of null packets).
For example:

  PAT table - ver=0x0 items=1 ts_stream_id=0x3ea
    0  prog=0x   1 pid=0x  10
  PMT table - sect_len=0x1d prog #=0x1 ver=0x0 last_sect=0x0 \
  tbl_len=0x20 PRC_PID=0x11
    len_left=0xa descr_len=0x6
      Tag=0x5 (registration_descr), Len=0x4  0x47 0x41 0x39 0x34 
    stream_type =0x2 PID =0x11
    stream_type =0x81 PID =0x14

  PID=0x0, ctrl_type=PAT, pkt_cnt=915
  PID=0x10, ctrl_type=PMT, pkt_cnt=785
  PID=0x11, ctrl_type=VIDEO, pkt_cnt=489919
  PID=0x14, ctrl_type=AUDIO_AC3, pkt_cnt=15574
  PID=0x1fff, ctrl_type=NULL, pkt_cnt=206756

                                                  -Dave Dodge
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