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# tcdecode

Section: User Commands (1)
Updated: 23th August 2003
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## 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 Östreich.

## 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 | (libac3)
    a52 | A52 audio | (liba52)
    dv | Digital Video DV | (libdv)
    mpeg2 | MPEG video | (libmpeg2)
    yv12 | Y'CbCr YUV |
    af6audio | audio API | (avifile)
    af6video | video API | (avifile)
    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 Östreich
<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)

## Index

NAME
SYNOPSIS
COPYRIGHT
DESCRIPTION
OPTIONS
NOTES
EXAMPLES
AUTHORS
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 21:18:46 GMT, March 27, 2006