NAME

       tcmodchain - Query compatibily of transcode modules chains.

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)