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- ~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.
-