tcdecode
read multimedia streams from medium, decode to raw format and print to standard output
see also :
avifix - avisync - avimerge - avisplit - tcprobe - tcscan - tccat - tcdemux - tcextract - transcode
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
]
add an example, a script, a trick and tips
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
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.
copyright
tcdecode is Copyright (C) by Thomas Oestreich.
notes
tcdecode is a front end for decoding various sources and
is used in transcode(1)’s import modules.
see also
avifix ,
avisync , avimerge , avisplit ,
tcprobe , tcscan , tccat ,
tcdemux , tcextract , tcdecode,
transcode
authors
tcdecode
was written by Thomas Oestreich
<ostreich[:at:]theorie.physik[:dot:]uni-goettingen.de> with
contributions from many others. See AUTHORS for details.