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       tcdemux - demultiplex a program stream


              -i  name  [  -t  magic  ]  [ -x codec ] [ -S unit,[s1-s2] ] [ -a
              ach,[vch] ] [ -s 0xnn ] [ -M mode ] [ -f fps ] [ -W ] [ -O  ]  [
              -P name ] [ -A n[,m[,...]]  ] [ -d verbosity ] [ -v ]


       tcdemux is Copyright (C) by Thomas Oestreich.


       tcdemux is part of and usually called by transcode.
       However, it can also be used independently.
       tcdemux reads source (from stdin if not explicitely defined) and prints
       on the standard output.


       -i name
              Specify input source.  If ommited, stdin is assumed.

       -x codec
              Process  only  packets  containing  given  codec   as   payload.
              Examples  are "mpeg2" for MPEG video or "ac3" for audio packets.

       -t magic
              Specify the input file type magic.  Useful for using tcdemux  in
              pipelines. This is normally autodetected.

       -a ach[,vch]
              Process  only packets containing given audio track ach and video
              track vch.  Most program stream feature  multiple  audio  tracks
              but only a single video stream. Default is "-a 0,0".

       -s 0xnn
              Select  specific  multimedia track using the standard identifier
              0xnn.  This useful to extract subtitle packets.

       -f fps Specify the frame rate fps for subtitle meta information used by
              external applications.

       -S unit[,s1-s2]
              Select  a  program  unit unit and a selected GOP range s1-s2 for
              processing. A unit is usually a set of  GOPs  that  need  to  be
              synchronized  at  the very beginning. This option can be used to
              eleminate junk units at the beginning of the  main  presentation
              or  to  select certain episodes of a TV series from a DVD. A GOP
              is a logical unit to be properly  decoded,  i.e.,  decoding  can
              only start at the beginning of a GOP.

       -O     Do not skip initial sequence. Used internally by transcode.

       -A n[,m[,...]]
              Select  packets using an identifier for extracting only selected
              streams without processing. This is useful for size reduction of
              your multimedia stream. Example:

              tcdemux -i big_dvd.vob -A 0xe0,0x81,0x20 > small_dvd.vob

              extracts  all  packets for the video stream, AC3 audio track (1)
              and the first subtitle stream (0).

       -M mode
              Select synchronization strategy mode.   This  is  how  transcode
              selects the beginning of a video and audio stream to assure both
              streams are sychronized for further processing:

              0    no synchronization. Packets are printed directly to stdout.

              1    synchronization  based  on  PTS  information  found  in the
              packet header.  Audio  packets  are  delayed  until  a  suitable
              starting point is found. Default for PAL videos.

              2    NTSC adapted synchronization mode. Detailed information for
              each GOP contained in the video stream are piped to a stdout  to
              be  processed  by  the  certain  import  modules.  This  enables
              adjusting the frame rate or inverse telecine, if necessary.

              3       more advanced synchronization mode 1 with msec  granular
              adjustment. Details delegated to transcode.

              4        more advanced synchronization mode 2 with msec granular
              adjustment for NTSC materail. Details delegated to transcode.

              5-7  undocumented debugging modes for internal use.

       -P file
              Write GOP meta information to file instead of tdout.

       -W     Print a navigation log file for a given video stream to  stdout.
              This is used for transcode's "psu mode" and "cluster mode".

       -d level
              With  this  option you can specify a bitmask to enable different
              levels of verbosity (if supported).   You  can  combine  several
              levels by adding the corresponding values:

              QUIET         0

              INFO          1

              DEBUG         2

              STATS         4

              WATCH         8

              FLIST        16

              VIDCORE      32

              SYNC         64

              COUNTER     128

              PRIVATE     256

       -v     Print version information and exit.


       tcdemux  is a front end for de-multiplexing program streams and is used
       in transcode's import modules.


       The command

       tcprobe -i movie.vob -x mpeg2

       extracts only MPEG video packets. Further processing, i.e.,  extracting
       the elementary video stream is done by tcextract.


       tcdemux was written by Thomas Oestreich
       <>   with  contributions  from
       many others.  See AUTHORS for details.


       avifix(1),   avimerge(1),   avisplit(1),    tcdecode(1),    tcdemux(1),
       tcextract(1), tccat(1), tcscan(1), transcode(1)