~4Dgifts/toolbox/src/exampleCode/video/seqgrab README
02.12.94
seqgrab - sequential frame accurate grabbing on Galileo w/hw trigger
Grabs a sequence of frames between start and end timecodes. This
works on a very specific configuration of equipment, namely a
system with a Galileo video board, a frame accurate device and a
VLAN controller.
seqgrab: -i <start SMPTE tc> -o <end SMPTE tc> [-f <filename>]
[-w] [-d] [-s w h] [-n <device>] [-v <videonode> ]
[-c <num>] [-r] [-t] [-z n/d] [-O <frames>] [-D] [-h]
-i starting <SMPTE timecode> to grab frames
SMPTE timecode format is hours:minutes:seconds:frame
HH:MM:SS:FF
* all fields are required
i.e. 00:00:01:02 to get frame 2 of minute 1
-o ending <SMPTE timecode> to grab frames
-f output filename
this is the base name of the filenames created. The rest of
the filename is composed of a frame number and an extension
which represents the video data format of the file
e.g. filename of /usr/tmp/doodah produces frames
/usr/tmp/doodah-00000.rgb
-w don't write frame to disk
-d display captured frame
puts capture frames up in ipaste windows.
-s w h frame dimensions (must be last option if specified)
-c num number of frames to capture
sequentially while the device is playing. Currently the
default is set to the size of the Galileo internal buffer
size which is 3 frames.
-n device device number to use
-r raw mode output (no YUV->RGB or de-interlace)
-v video source node number
-z zoom the image by n/d
-O offset # frames from starting timecode (default = -1)
to adjust for timing delays between when the trigger is set
to when the VL is able to respond. This is seen as a very
regular interval.
-p preroll time <SMPTE timecode> (default 5 sec.)
-V verbose
-h this help message
See captureconfig.showcase file which contains a diagram of the
equipment configuration setup.
NOTE:
Currently the mapping of SMPTE start and endpoints does not work with
framedrop timecode so you may not get exactly what you want.
Source
Documentation
Reference
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