==========================================================================
The checksum's (found through sum -r) of the files that you have received
(other than this README) are as follows:

45995      1 patchSG0000651
01239    183 patchSG0000651.dmedia_eoe_sw
28476      1 patchSG0000651.idb
==========================================================================


				  - 1 -



       1.  Patch_SG0000651_Release_Note

       This release note describes patchSG0000651 to IRIX 5.3. This
       patch updates the file /usr/etc/videod.

       1.1  Supported_Hardware_Platforms

       This patch contains Galileo/Indigo2/Indy	Video bug fixes	for
       Indigo (Elan, XZ, XZ), Indigo2 (EXtreme,	XZ, XL), and Indy
       (XL). Supported processor types include the R4000, R4400,
       and the R4600SC.	 The software cannot be	installed on other
       configurations.

       1.2  Supported_Software_Platforms

       This patch contains bug fixes for IRIX 5.3 for the above
       hardware	platforms.  The	software cannot	be installed on
       other configurations.

       1.3  Special_Installation_Considerations

       Installing this patch updates the video daemon (videod).
       The inst	exit operation will restart videod.  When videod is
       restarted, all currently	running	VL applications	may
       terminate once their connection to videod is broken by this
       procedure.

       1.4  Bugs_Fixed_by_Patch_SG0000651

       This patch contains the partial fix for Bug #278648 in IRIX
       5.3.  It	requires both patchSG0000615 and patchSG0000651	to
       fix the bug.  Bug number	from Silicon Graphics bug tracking
       system are included for reference.

	  o Inperson 2.0 snap video on Galileo doesn't work.(Bug
	    #278648) There seems to be a race condition	between
	    InPerson checking for valid	frames and the videod's
	    transfer thread starting.  Videod may return the
	    BeginTransfer succeeded even before	the transfer thread
	    had	a chance to run	and start the ioctl.  Also the
	    Galileo DD layer fails to realize the path by not
	    decrementing the user count	when the path goes down	to
	    done using.

       1.5  Subsystems_Included_in_Patch_SG0000651

       This patch release includes these subsystems:

	  o patchSG0000651.dmedia_eoe.sw.video













				  - 2 -



       1.6  Installation_Instructions

       Because you want	to install only	the patches for	problems
       you have	encountered, patch software is not installed by
       default.	After reading the descriptions of the bugs fixed in
       this patch (see Section 1.3), determine the patches that
       meet your specific needs.

       If, after reading Sections 1.1 and 1.2 of these release
       notes, you are unsure whether your hardware and software
       meet the	requirements for installing a particular patch,	run
       inst.

       Patch software is installed like	any other Silicon Graphics
       software	product.  Follow the instructions in your Software
       Installation Administrator's Guide to bring up the miniroot
       form of the software installation tools.

       Follow these steps to select a patch for	installation:

	 1.  At	the Inst>prompt, type

	     install patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 2.  Select the	desired	patches	for installation.

	 3.  Initiate the installation sequence. Type

	     Inst> go

	 4.  You may find that two patches have	been marked as
	     incompatible.  If this occurs, you	must deselect one
	     of	the patches.

	     Inst> keep	patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 5.  After completing the installation process,	exit the
	     inst program by typing

	     Inst> quit


       To remove a patch, use the versions remove command as you
       would for any other software subsystem.	The removal process
       reinstates the original version of software unless you have
       specifically removed the	patch history from your	system.












				  - 3 -



       versions	remove patchSGxxxxxxx

       where xxxxxxx is	the patch number.

       To keep a patch but increase your disk space, use the
       versions	removehist command to remove the patch history.

       versions	removehist patchSGxxxxxxx

       where xxxxxxx is	the patch number.