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tcdecode(1)            DragonFly General Commands Manual           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
              decoding. Currently, supported parameter for codec are

               mp3        MPEG audio      (lame)
               ac3        AC3 audio       (liba52)
               dv      Digital Video DV   (libdv)
               mpeg2      MPEG video      (libmpeg2)
               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

               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:

               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:

               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

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)

tcdecode(1)                    23th August 2003                    tcdecode(1)