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XVidCap - Video Capture for X
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Rasca, Berlin 1997-1999, Published under the GNU GPL
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extended by Karl, Frankfurt 2003
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Capture parts of your screen to single files for every frame or
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This program does not use a special hardware driver to access the
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video card. It just asks the X server about rectangular areas. This
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means you need a fast machine (>= 133 MHz) and a fast harddrive. Big
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frames (e.g. 384x288 = 1/2 PAL) at a high FPS rate are only possible
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with very very fast systems :-) but this program may also work on
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non-Linux systems.. try it.
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(verified on Lintel and Solaris/SPARC)
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* Different frame output formats: XWD, PPM, PNG, MNG and JPEG
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* Supported visuals: TrueColor 15 bpp, 16 bpp, 24 bpp, and 32 bpp,
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StaticGray/8 bpp (not all for all output formats)
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* PseudoColor/8bpp and TrueColor/8bpp only for some output formats
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* I don't know about DirectColor-visual, may be it works or not ..
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* GT: QuickTime support (RGB, JPEG and PNG) for TrueColor 15, 16, 24
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and 32bpp. (KHB: haven't been able to verify this)
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* Command line arguments could be set by X resources
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* Define frames per second (fps) which should be recorded
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* Frames could be saved compressed (.gz)
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* Set the maximum number of frames which should be captured
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* Set the maximum time in seconds to capture
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* Usage of the X shared memory extension if the X Server supports it
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* Step mode for capturing single frames
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* Captures mouse-pointer movement through pseudo-mouse-pointer
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Download Source Code, Binary (Linux glibc) and submit bug reports at:
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http://www.sourceforge.net/projects/xvidcap
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Additional programs / libraries
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For compressed XWD and PPM files you need the zlib, for PNG support
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you need zlib and the PNG library (0.96 or newer), for JPEG support
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you need the jpeg library. For viewing the recorded frames as
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animation the animate program of the ImageMagick package is very
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On-line video encoding uses ffmpeg, which is bundled for now due to
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color space conversion problems with 0.4.6. Watch out for dynamically
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linked versions with ffmpeg 0.next.
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Disabling backing store (-bs) at the Xserver gives better (faster)
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results on my system. Don't ask me why, I don't know about X server
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internals. Perhaps it's only imagination :-)
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I think the XWD output is the fastest one. If you use compression it
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will slow down the capturing. Compressed PPM seems to be faster as PNG
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with the same compression level and produces also smaler files.
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Codecs to be used for on-line encoding can be configured through
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$HOME/.xvidcap.scf and a parameter "codec". Supported values atm are
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"MPEG4", "MPEG1", or "MJPEG".
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Have a look at the man-page of xvidcap.
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karl, 24. October 2003 - 17:30
added
removed
README
