Vitaliy wrote:

> I ran into a serious problem when I tried using the "video on motion" option 
> in 1024x768 mode. Basically, the software would create segment the video 
> stream into about 4Mb chunks, 

MB or GB? There is a 4GB limit to AVI file size.

> and most of them would be corrupt.

Pamela (Skype recording software) has the same issue.

It's because it cannot write the AVI index once the file is
too big (its at the end)
Just like the idiot MS Outlook 2000 would happily write
mailbox files >2GB, and then couldn't access them because they
were too big.

A player called GCOM can play such corrupt AVI files.
But I've yet to find software that will rebuild the index so that
the original file can be rescued. Anyone seen such?


> Must be a 
> performance issue (3.4GHz Pentium D/3Gig RAM is not enough at this 
> resolution, or possibly USB bandwidth is not sufficient).
> 
> Eventually I realized that what I really needed to use, was a "save 
> snapshots on motion" feature. It works beautifully, saving 1.3MP shots at a 
> rate of 1 image per second when there's motion.

Are you actually GETTING 1.3MP images from your source?

There is NO point in storing interpolated images since it costs you 4x
the size, needlessly.
Do the interpolation (up scaling) at DISPLAY time.
(Same rule for scanners. Do NOT store 'interpolated' images.

> to be very stable. It even has a watchdog that can restart the main program 
> when it crashes, and even reboot the entire system once in a while.

Except that the watchdog relies on the CPU to be running.
If it halts, it's not going to do a reset.

Anyone seen a keyboard dongle watchdog? I'd like know if there
is a commercial one, before I roll my own.

Robert

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