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Man Pages


Manual Reference Pages  -  TCMODCHAIN (1)

NAME

tcmodchain - Query compatibily of transcode modules chains.

CONTENTS

Synopsis
Copyright
Description
Options
Module Identifiers
Examples
Return Values
Authors
See Also

SYNOPSIS

tcmodchain [ -m path ] [ -C ] [ -L ] [ -d verbosity ] [ -v ] module1 module2

COPYRIGHT

tcmodchain is Copyright (C) by Transcode Team

DESCRIPTION

tcmodchain allow to inspect transcode(1) modules, as well as it’s companion, tcmodinfo(1). While tcmodinfo(1) focus on single modules, tcmodchain is intended to help in exploring/experimenting module interactions.

OPTIONS

-m path
  Look in Path instead of the compiled-in module path while trying to load a module.
-C Enable check mode.
In check mode tcmodchain expects exactly two module identifiers. tcmodchain will check compatibilty between two given modules. Result will be logged out or not depending of verbosity level. Anyway, if two modules are compatible, tcmodchain will exit succesfully; otherwise, tcmodchain will exit with error.
see RETURN VALUES below.
-L Enable list mode.
In list mode tcmodchain expects exactly two module identifiers, exactly one of which containing a wildcard. tcmodchain will inspect all avalaible installed modules matching the wildcard and will print out module names that are compatible with the other given one. if at least one compatible module is found, tcmodchain will exit succesfully; otherwise, tcmodchain will exit with error.
see RETURN VALUES below.

-d verbosity
  Specify the verbosiness level to use, like transcode does. Default value is 1 (TC_INFO verbosiness).
-v Print version information and exit.

MODULE IDENTIFIERS

tcmodchain identifies modules using a type:name naming scheme. Currently, as in transcode 1.1.0, only encode and multiplex module types are supported. name can refer to the name of any avalaible transcode modules, using the same rules of tcmodinfo(1) -i option. The wildcard character * is supported in the name section of module identifier. Wildcard meaning is ‘any of avalaible modules’ and is honoured only when list mode (-L option) is used. Using wildcard character for both module identifiers will lead to an error.

EXAMPLES

$ tcmodchain -C encode:null multiplex:null -d 1

[encode_null.so] v0.0.3 (2005-06-05) null (fake) A/V encoder
[multiplex_null.so] v0.0.2 (2005-12-29) discard each encoded frame
[tcmodchain] encode:null | multiplex:null [OK]
[tcmodchain] module chain OK

$ tcmodchain -L ’encode:*’ multiplex:null

copy
faac
lame
lzo
null
x264
xvid

PLEASE NOTE that output of this example may vary depending of your installation.
At least null and copy modules will be showed on your output.

$ tcmodchain -L encode:null ’multiplex:*’

avi
null
raw
y4m

RETURN VALUES

tcmodchain uses following return values:
0 successfull
1 bad parameter or command line option
2 error while (un)loading a module
3 given module pair isn’t compatible
4 error while looking for module(s)

AUTHORS

tcmodchain was written by Francesco Romani
<fromani@gmail.com> with contributions from many others. See AUTHORS for details.

SEE ALSO

transcode(1) tcmodinfo(1)

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tcmodchain(1) TCMODCHAIN (1) 5 January 2006

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