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Planetary Video - use VirtualDub Lossless Compression Codecs


s3igell

Question

A 100 Frame Planetary Video of standard 1024x680 5xZoom LiveView is coming out as a 204MB AVI file - that's a 3-byte/pixel Uncompressed DIB representation of the 100 Frames.

 

As I'm able to capture at 29-30fps, that is a rather Disk-Space-Intensive 10 seconds - and about 1.2GB per minute...

 

Since both AutoStakkert2 and RegiStax6 can readily handle 10 minute AVIs for stacking to a single Image of Mars or Saturn - Jupiter AVIs are suggested to be limited to 3-5min due to Jupiter's Fast Planetary Rotation - one will really quickly be running out of HDD Space during a Productive Night of Planetary Imaging.

 

VirtualDub offers several Compression Codecs - including a number of Lossless ones - and I'd assume that VDub.exe will offer the same at the Command Line Interface.

VirtualDub will even offer additional Codecs found Installed on the Users PC.  RegiStax6 and AutoStakkert2 are capable of using several of these Codecs, as are Helper-Apps such as AstroPIPP and WinJUPOS.

 

Spying on the VDub Command Window while a Video is being composited shows:

Beginning dub operation.
Dub: Input (decompression) format is: XRGB8888.
Dub: Output (compression) format is: RGB888.
But, the Compression Codec being used is "DIB" (essentially No Compression).
 

So, it'd be quite helpful if BYE/BYN used one of the Lossless Compression Codecs when generating the final AVI.

Perhaps default to DIB, but offer the User in Settings a list of Codecs found by VirtualDub on the User's PC and leave the User responsible for selecting one Compatible with the User's Video Stacking Software.

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