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180 lines
3.7 KiB
180 lines
3.7 KiB
4 years ago
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.TH tcdecode 1 "23th August 2003" "tcdecode(1)"
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.SH NAME
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tcdecode \- read multimedia streams from medium, decode to raw format and print to standard output
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.SH SYNOPSIS
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.TP
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.B tcdecode
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.B -i
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.I name
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[
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.B -x
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.I codec
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] [
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.B -t
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.I package
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] [
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.B -g
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.I WxH
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] [
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.B -s
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.I c,f,r
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] [
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.B -C
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.I s-e
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] [
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.B -y
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.I codec
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] [
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.B -Y
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] [
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.B -Q
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.I mode
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] [
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.B -A
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.I flag
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] [
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.B -d
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.I verbosity
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] [
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.B -v
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]
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.SH COPYRIGHT
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\fBtcdecode\fP is Copyright (C) by Thomas Oestreich.
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.SH DESCRIPTION
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.B tcdecode
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is part of and usually called by \fBtranscode\fP.
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.br
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However, it can also be used independently.
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.br
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\fBtcdecode\fP reads source (from stdin if not explicitely defined) and
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prints on the standard output.
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.SH OPTIONS
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.IP "\fB-i \fIname\fP"
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Specify input source. If ommited, \fIstdin\fP is assumed.
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\fBtcdecode\fP reads streams from file or from stdin.
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.IP "\fB-g \fIWxH\fP"
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video frame width and height [720x576]
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.IP "\fB-C \fIs-e\fP"
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decode and print out only this frame interval (video) or bytes (audio) [all].
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.IP "\fB-x \fIcodec\fP"
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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 \fIcodec\fP are
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.RS 8
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.TS
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lI c l.
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mp3 MPEG audio (lame)
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ac3 AC3 audio (liba52)
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dv Digital Video DV (libdv)
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mpeg2 MPEG video (libmpeg2)
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yv12 Y'CbCr YUV
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mov Quicktime (libquicktime)
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.TE
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.RE
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.IP "\fB-t \fIpackage\fP"
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Currently only argument supported is "lavc". Use the codec by -x from this package. Available (-x) codecs for \fIlavc\fP are:
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mpeg2, divx3, divx, divx4, mp42, mjpg, rv10, svq1, svq3, vp3, 4xm, wmv1, wmv2, hfyu, indeo3, h263p, h263i
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.IP "\fB-y \fIcodec\fP"
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target codec. \fB tcdecode \fP only decodes to raw format suitable for transcode. Valid option parameter for \fIcodec\fP are
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.RS 8
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.TS
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lI r.
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rgb RGB 24bit
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yv12 Y'CbCr YUV
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yuy2 4:2:2 YUV
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pcm SIGNED LE 16bit PCM
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.TE
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.RE
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.IP "\fB-s\fP \fIc,f,r\fP"
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audio gain for AC3 downmixing [1.0,1.0,1.0]
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.IP "\fB-Y\fP"
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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]
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.IP "\fB-A\fP \fIflag\fP"
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audio flag for AC3/A52 decoder [none]. This flag determines the down-mixing
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configuration. Valid choices for \fIflag\fP are determined by the following
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bits set:
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.RS 8
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.TS
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l r.
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drc off 1
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demux 2
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dolby off 4
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.TE
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.RE
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Add those numbers to turn multiple options on.
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.IP "\fB-Q\fP \fImode\fP"
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decoding quality. Certain codecs, e.g., DV with libdv allow for changing
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this parameter if speed is prefered over quality.
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Valid parameter are 1=fastest-5=best [5].
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.IP "\fB-d\fP \fIlevel\fP"
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With this option you can specify a bitmask to enable different levels
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of verbosity (if supported). You can combine several levels by adding the
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corresponding values:
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.RS 8
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.TS
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l r.
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QUIET 0
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INFO 1
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DEBUG 2
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STATS 4
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WATCH 8
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FLIST 16
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VIDCORE 32
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SYNC 64
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COUNTER 128
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PRIVATE 256
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.TE
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.RE
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.IP "\fB-v\fP"
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Print version information and exit.
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.SH NOTES
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\fBtcdecode\fP is a front end for decoding various sources and is used in \fBtranscode(1)\fP's import modules.
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.SH EXAMPLES
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The command
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.nf
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\ tcdecode -i foo.mp3 -x mp3
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.fi
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decodes an MPEG audio stream and prints raw PCM data to stdout.
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The command
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.nf
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\ tcextract -i foo.avi -x mp3 | tcdecode -x mp3
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.fi
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extracts an MPEG audio track from the AVI-file foo.avi and pipes the frames into the decoder
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.PP
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.SH AUTHORS
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.B tcdecode
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was written by Thomas Oestreich
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.br
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<ostreich@theorie.physik.uni-goettingen.de> with contributions from
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many others. See AUTHORS for details.
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.SH SEE ALSO
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.BR avifix (1),
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.BR avisync (1),
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.BR avimerge (1),
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.BR avisplit (1),
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.BR tcprobe (1),
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.BR tcscan (1),
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.BR tccat (1),
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.BR tcdemux (1),
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.BR tcextract (1),
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.BR tcdecode (1),
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.BR transcode (1)
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.br
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