Archived from http://reality.sgi.com/bh_engr
Last update: March 3, 1998

Movie Tools

Here's the source code for some handy movie tools. Together they form a rudimentary command-line cut's only non-linear editor. These were all compiled and run under 6.3 and they generally work only with JPEG Quicktime Movie Files (use mvqt to convert a "Cosmo-style" file to Quicktime) and generally understand only standard definition video size and rate (fields of square or non-square PAL or NTSC).

I use dmrecord to capture the clip(s), movieplayer (set View -> Time Unit -> Frames) to find out what's where in a clip, and dmplay to print the final result back to video.

In between I use these tools to rearrange the frames. No pixels will be harmed using these tools -- they merely copy the compressed bits, no encoding/decoding is ever done.

• Makefile - make the stuff below
• mvcut.c - extract a cut from a JPEG Quicktime Movie File
• mvcat.c - concatenate several JPEG Quicktime Movie Files into one
• mvi.c - print some info about any Movie File
• mvqt.c - translate a Cosmo-style JPEG Movie File to JPEG Quicktime Movie File
• mvrgb.c - extract an image from any Movie File into a .rgb file (this command does actually decode the data from the Movie File frame into the .rgb file)
• mvj.c - extract a frame/field of a JPEG Quicktime Movie File
• jmv.c - wrap a JPEG Quicktime Movie File around a bunch of JPEG files

JPEG dmIC examples

JPEG and video (VL). These were used heavily in O2 ICE JPEG bringup:

• Makefile
• jrecvid.c - compress live video to JPEG Quicktime Movie File
• jplayvid.c - decompress JPEG Quicktime Movie File to live video out

JPEG and graphics (OpenGL):

• Makefile
• jplaygfx.c - decompress JPEG Quicktime Movie File to OpenGL graphics
• jrecgfx.c - compress OpenGL pbuffer (off-screen) to JPEG Quicktime Movie File (this one happens to use a window size of 1024x480 and frame rate of 24 frames/sec)

More JPEG fun stuff:

• Makefile
• jio.c - JPEG compressed/decompressed video in a window w/ video in a window

Any questions?

bh@sgi.com