Provided by: oggvideotools_0.8a-7_amd64 
NAME
oggCat - concatenates two ogg video files (.ogv, .ogg or oga)
SYNOPSIS
oggCat [options] outfile.ogv file1.ogv file2.ogv [ file3.ogv [...] ]
DESCRIPTION
oggCat concatenates two or more ogg files.
The parameters of the resulting ogg file is defined by the first file in the concatenation list. The
parameters could be changed by some options, explained below.
All subsequent files that does not match these video file parameters are automatically transcoded.
A concatenation will fail in case that there are not enought streams available. This could happen e.g. if
the first file consists of one audio and one video stream and the second file only carries a video
stream.
If there is more than one video or audio stream within the file, the first stream is used.
OPTIONS
-s Sets the size of the video frame. The size is given as <width>x<height>. At default, the video
frame size is the size of the first video stream.
Example: -s 320x240
-d Sets the datarate in byte per seconds for the video encoder (theora). This meant to be a upper
threshold. So the file may be smaller than assumed. If not set, the datarate of the first file is
used.
Example: -d 1024000
-D Sets the datarate in byte per seconds for the audio encoder (vorbis). If not set, the datarate of
the first file is used.
Example: -D 64000
-f Sets the frame rate of the video with numinator and demoninator and is the pictures per second. If
only one number is given, the denominator is set to 1. If not set, the framerate of the first file
is used.
Example: -f 25:2
-F Sets the sample frequency (sample rate) of the audio data in Hertz. If the sample frequency does
not match the one with the original file, resamling is invoked.
Example: -F 32000
-c Adds comments to the video (theora) stream. Comments are given by a pair of type and value in the
form 'type=value'. More than one comment can be concatenated with a semicolon. It is recommended
to use apostrophes as the command line may use the semicolon as a separator.
Example: -c 'AUTHOR=yorn;DATE=03.07.09'
-C Adds comments to the audio (vorbis) stream. Comments are given by a pair of type and value in the
form 'type=value'. More than one comment can be concatenated with a semicolon. It is recommended
to use apostrophes as the command line may use the semicolon as a separator.
Example: -C 'AUTHOR=yorn;DATE=03.07.09'
-q Specifies the video quality for the newly created stream. Valid values can be chosen between 0 and
63 (best).
Example: -q 63
-rv Force to re-encode the video stream. This is sometimes necessary, if the video stream match in
video parameters, but not in the theora version. In that case, reencoding the video stream helps
creating good results.
-x Force to overwrite the output file, even if it exists. This is mainly helpful if the oggCat is
server controlled.
EXAMPLES
oggCat concatFile.ogv myfile1.ogv myfile2.ogv myfile3.ogv
or
oggCat -o concatFile.ogv myfile1.ogv myfile2.ogv myfile3.ogv
This command creates a cancatenated file concatFile.ogv that consists of the three files myfile1.ogv
myfile2.ogv myfile3.ogv
oggCat -s320x240 -q63 concatFile.ogv myfile1.ogv myfile2.ogv myfile3.ogv
This command connects the three files myfile[1-3].ogv to file concatFile.ogv with the size of 320x240 and
best quality.
AUTHOR
Joern Seger <yorn at gmx dot net>
SEE ALSO
oggCut(1), oggJoin(1), oggSplit(1), oggTranscode(1), oggSlideshow(1), oggThumb(1), oggSilence(1)