I have 2 CHDK capable Canon PowerShot Cameras, a S3 IS, and an A560. I typically use CHDK uBasic intervalometer scripts that will just click the shutter forever at some given interval (5-30 seconds, usually). For the astronomy images, I add a command that adjusts the shutter speed to 65 seconds for each shot.
I mostly use perl and imagemagick for processing images...
The quality of the flash videos that gets generated automatically by archive.org is good for low bandwidth quick viewing...but not really up to my high standards (haha!).. well, true, I guess... you couldn't really see the hands of the Met Life clock moving in the default version.
Archive.org uses ffmpeg for thier video processing, but the settings they use are tuned for low quality/bandwidth.
Searching around for flv ffmpeg quality settings, this is what I use:
ffmpeg -i InputVideo.avi -f flv -qmax 12 -qmin 12 -s 640x480 -r 29.97 OutputVideo.flv
That gives pretty good results, I guess setting qmax and qmin to the same value allows it to use variable bit-rates, which gives good quality whether there is a lot of motion, or not so much. Setting qmin/qmax to lower values increases quality (and file size) ... 8 seems like a good high quality value...
Archive.org also generates the flv at 320x240, so I also increased the size for larger viewing...
Once you've regenerated a new flash, I upload that to archive.org using check-out and ftp. You can either replace the original flash video (be careful not to 're-derive' the files, otherwise it will recreate the old version) OR, you can just save it to a different file name, and point to that when you embed thier little flash player..
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