four character code which identifies a compression codec.

the zs4 intrinsic avi reader/writer supports the fourcc codes iyuv, yv12, yuv9 (read only), mjpg and mvjp, among others.

the site fourcc.org is a very good reference point for detailed information on fourcc codes.

for windows based Motion JPEG check midivid.com. that's who makes the cool mvjp codec for windows. out code seems compatible.

curchoice_sve_fourcc stringbox