NAME

       ogmcat - Concatenate several OGG/OGM files into one big OGG/OGM file

SYNOPSIS

       ogmcat [options] -o outname inname1 [inname2 [inname3 ...]]

DESCRIPTION

       ogmcat does NOT work at the moment. It is work in progress. I included it just out of laziness (otherwise
       I'd have to remove it from the Makefile/configure stuff prior to releasing this version).

       ogmcat can be used to concatenate several OGG/OGM files into one big file if they are of the  same  type.
       For a more in-depth description refer to the LIMITATIONS section.

       -o, --output outname
              Output to 'outname'.

       inname1
              Use 'inname1', 'inname2' etc as the sources.

       -m, --manualsync n
              Specifies  a  manual  sync value in ms that will be added to each stream's presentation timestamps
              along with the value calculated by the chosen sync algorithm (see the -s option). This option  can
              be used for each input file although it has no effect if used for the first one as well.

       -s, --sync nr
              Uses sync mode nr. Valid values are 0 - 4. The default value is shown on ogmcat's help screen.

       -n, --nosafetychecks
              Disable  the  safety checks made prior to the concatenating. The resulting file may be unplayable.
              See the LIMITATIONS section for further details.

       -v, --verbose
              Be verbose and show each OGG packet.  Can be used twice to increase verbosity.

       -h, --help
              Show this help.

       -V, --version
              Show version information.

LIMITATIONS

       Concatenating streams is difficult at the best and might even be impossible.  Therefore ogmcat makes very
       strict comparisons between the streams contained in the input files. The checks done include:

       *      general:  All  streams  with the same serial number must be of the same type (video, audio, Vorbis
              audio or text streams).

       *      general: If a stream exists in one file it must in the other files as well.

       *      video streams: The codec FourCC, width, height and FPS must match.

       *      Vorbis streams: The sample rate and the number of channels must match.

       *      other audio streams: The codec ID, sample rate, bits per sample and number of channels must match.

       *      text/subtitle streams: The 'time unit' must match.

       The user can forcefully override the last four checks  with  the  -n  parameter.  The  checks  marked  as
       'general' cannot be overridden this way.

       Audio/video synchronization might not be ok in the resulting file even if the source files were perfectly
       in sync. The user can experiment with the -s parameter which causes  ogmcat  to  use  slightly  different
       algorithms  for  calculating  the  granulepos  values  for the audio and text streams. The range of valid
       parameters will be printed on ogmcat's help screen.

       If none of the synchronization algorithms provided works correctly then the user can also manually add  a
       synchronization offset using the -m option for each input file.

AUTHOR

       ogmcat was written by Moritz Bunkus <moritz@bunkus.org>.

SEE ALSO

       ogmmerge(1), ogminfo(1), ogmdemux(1), ogmsplit(1), dvdxchap(1)

WWW

       The    newest    version    can   always   be   found   at   <http://www.bunkus.org/videotools/ogmtools/>
       ⟨http://www.bunkus.org/videotools/ogmtools/⟩