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
-sc,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]
-Aflag
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.
-Qmode
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].
-dlevel
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
