NAME¶
oggThumb - creates thumbnails from an ogg video file
SYNOPSIS¶
oggThumb [options] file1.ogv [ file2.ogv [ file3.ogv [...] ] ]
DESCRIPTION¶
oggThumb creates Thumbnails from one or more ogg video files, at a given
time position or a given frame number. It is also possible to create a series
of thumbnails at different time or frame positions. The pictures can be
created in JPG or PNG format and can be resized to any given size.
The default naming of each thumbnail series follows the following rule:
<filename_without_extension>_x.<picture_extension>
Where x starts with 0 and is incremented with every created thumbnail. So the
thumbnails are successivly numbered by the appearance order. This is even
valid, if time positions and frame numbers are mixed.
OPTIONS¶
- -t
- Time at which a thumbnail should be created. More than one thumbnail time
can be concatenated by komas. The times can be set by integer or floating
point values in seconds. If the time is not exactly matching, the next
frame is used. The times don't have to be sorted incrementally.
Example: -t 12.4,14.157,13.23
- -f
- Number of a frame that should be created as a thumbnail. More than one
thumbnail frame can be concatenated by komas. The frame numbers must be an
integers. The frame numbers don't have to be sorted incrementally.
Example: -f 12000,13000,11000
- -s
- Picture output size. The thumbnail is created in the size given as
<width>x<height>. If you want to include the thumbnails into
your webpage and you need to have a fixed width but dynamic height, you
can set the dynamic axis to 0. So the aspect ratio of the video frame is
kept. This is the same for setting width or height to 0.
Example: -s 0x100
- -o
- Output format. This can be png or jpg. The default is jpg.
Example: -o png
- -n
- Alternative thumbnail picture name. The % can be used within the name to
indicate the counter placeholder.
In case of more than one video file, the counter continuous throughout the
different videos, so that the pictures are not overwritten.
If the name has an extension. This extension is used to identify the output
picture format.
Example: -n myNo_%_thumb
EXAMPLE¶
oggThumb -t 10.3,22.4,31.9,43.4,59.4 -f 1200 -s 0x100 myFile.ogv
oggThumb -f 200,400,300,100 -t 3.54 -n %_thumb.png myfile.ogv
mysecondfile.ogv
AUTHOR¶
Joern Seger <yorn at gmx dot net>
SEE ALSO¶
oggCut(1),
oggCat(1),
oggJoin(1),
oggSplit(1),
oggTranscode(1),
oggSlideshow(1),
oggSilence(1)