OGGCAT(1) User Manuals OGGCAT(1)NAMEoggCat - concatenates two ogg video files (.ogv, .ogg or oga)
SYNOPSISoggCat [options] outfile.ogv file1.ogv file2.ogv [ file3.ogv [...] ]
DESCRIPTIONoggCat 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 recom‐
mended to use apostrophes as the command line may use the semi‐
colon as a seperator.
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 recom‐
mended to use apostrophes as the command line may use the semi‐
colon as a seperator.
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 reencode the video stream. This is sometimes necces‐
sary, 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.
EXAMPLESoggCat 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 concat‐
File.ogv with the size of 320x240 and best quality.
AUTHOR
Joern Seger <yorn at gmx dot net>
SEE ALSOoggCut(1), oggJoin(1), oggSplit(1), oggTranscode(1), oggSlideshow(1),
oggThumb(1), oggSilence(1)Linux JAN 2010 OGGCAT(1)
