


tcdecode(1)                                           tcdecode(1)


NAME
       tcdecode  -  read  multimedia streams from medium, decode to raw format
       and print to standard output

SYNOPSIS
       tcdecode
              -i name [ -x codec ] [ -t package ] [ -g WxH ] [ -s c,f,r ] [ -C
              s-e ] [ -y codec ] [ -Y ] [ -Q mode ] [ -A flag ] [ -d verbosity
              ] [ -v ]

COPYRIGHT
       tcdecode is Copyright (C) by Thomas Oestreich.

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

OPTIONS
       -i name
              Specify  input  source.  If ommited, stdin is assumed.  tcdecode
              reads streams from file or from stdin.


       -g WxH video frame width and height [720x576]


       -C s-e decode and print out only this frame interval (video)  or  bytes
              (audio) [all].


       -x codec
              source codec, if not detected of reading from stdin. This option
              also specifies video and audio context of the source for  decod-
              ing. Currently, supported parameter for codec are

               lI  c  l.   mp3  MPEG  audio     (lame) ac3  AC3 audio (liba52)
               dv   Digital Video DV (libdv)  mpeg2     MPEG  video     (libm-
               peg2) yv12 Y'CbCr YUV mov  Quicktime (libquicktime)


       -t package
              Currently only argument supported is "lavc". Use the codec by -x
              from this package. Available (-x) codecs for  lavc  are:  mpeg2,
              divx3,  divx,  divx4,  mp42,  mjpg,  rv10, svq1, svq3, vp3, 4xm,
              wmv1, wmv2, hfyu, indeo3, h263p, h263i



       -y codec
              target codec.  tcdecode  only decodes to raw format suitable for
              transcode. Valid option parameter for codec are




tcdecode(1)              23th August 2003                       1





tcdecode(1)                                           tcdecode(1)


               lI   r.    rgb  RGB   24bit   yv12 Y'CbCr  YUV  yuy2 4:2:2  YUV
               pcm  SIGNED LE 16bit PCM

       -s c,f,r
              audio gain for AC3 downmixing [1.0,1.0,1.0]


       -Y     decoded Digital Video (raw) YUV frame is in YUY2 (packet) format
              using  libdv. Downsample frame to YV12. PAL users should compile
              libdv with --with-pal-yuv=YV12 to avoid this option [off]


       -A flag
              audio flag for AC3/A52 decoder [none]. This flag determines  the
              down-mixing configuration. Valid choices for flag are determined
              by the following bits set:

               l r.  drc off   1 demux     2 dolby off 4

       Add those numbers to turn multiple options on.


       -Q mode
              decoding quality. Certain codecs, e.g., DV with libdv allow  for
              changing  this  parameter  if  speed  is  prefered over quality.
              Valid parameter are 1=fastest-5=best [5].


       -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:

               l r.  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.


NOTES
       tcdecode  is  a  front  end for decoding various sources and is used in
       transcode(1)'s import modules.

EXAMPLES
       The command
            tcdecode -i foo.mp3 -x mp3
       decodes an MPEG audio stream and prints raw PCM data to stdout.

       The command
            tcextract -i foo.avi -x mp3 | tcdecode -x mp3
       extracts an MPEG audio track from the AVI-file foo.avi  and  pipes  the
       frames into the decoder




tcdecode(1)              23th August 2003                       2





tcdecode(1)                                           tcdecode(1)


AUTHORS
       tcdecode was written by Thomas Oestreich
       <ostreich@theorie.physik.uni-goettingen.de>   with  contributions  from
       many others.  See AUTHORS for details.

SEE ALSO
       avifix(1), avisync(1), avimerge(1), avisplit(1), tcprobe(1), tcscan(1),
       tccat(1), tcdemux(1), tcextract(1), tcdecode(1), transcode(1)

















































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