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
-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
-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:
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:
|
-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 [AT] theorie.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)