What software can segment multiplexed video?

[forensic]

Please help. I need to separate a pre-recorder digitized quad-view of four separate security camera feeds sharing one screen from a time-lapse VCR. The goal is to end up with four separate video streams. What software (freeware, shareware, commercial or Virtualdub filter) can do this? What if the original video is 3x3 (nine videos on one screen) what software could I use? I have searched for days and found nothing. Can anyone help? NOTE: I would prefer software that is fairly inexpensive. I do not care if the software is slow, but it must be lossless.
Thank you.
Every 4 frames makes up one single display frame so, as guns1inger & manono cleverly suggested, I can use the AviSynth method to crop, resize, encode with VDub(Mod) and the Lagarith lossless codec. Is there a tool to remultiplex the video and, once enhanced and edited, every 4 frames once again makes up one single display frame?

[guns1inger]

Tis the video of all four on screen at the same time, or every 4 frames makes up one single display frame ?

If all four are on the screen at the same time, then avisynth or virtualdub can crop the image, after which you can save to a lossless format (huffyuv, lagarith etc)

If it is done seperating a group of frames (every four frames making up one screen) then you would have to use some form of decimate script in avisynth.

[manono]

I don't think he's being very clear either, but it sounds to me like he has 4 videos sharing the same screen in a 2x2 arrangement and he wants to crop and perhaps resize each into its own video stream, as your second paragraph describes. As you say, AviSynth or VDub. I'd, of course, go with the AviSynth method; crop, resize, encode with VDub(Mod) using the Lagarith lossless codec, all freeware.

What if the original video is 3x3 (nine videos on one screen) what software could I use?

Avisynth again; piece of cake.

[forensic]

Every 4 frames makes up one single display frame so, as guns1inger & manono cleverly suggested, I can use the AviSynth method to crop, resize, encode with VDub(Mod) and the Lagarith lossless codec. Is there a tool to remultiplex the video and, once enhanced and edited, every 4 frames once again makes up one single display frame?

[manono]

Now, to me, you're describing gunsl1nger's 3rd paragraph, where every 4th frame is part of one video, so frame numbers 1,5,9,13,17... are one video, frames 2,6,10,14,18... are a different video, etc. That's also easily handled with AviSynth's SelectEvery command, as in:

SelectEvery(4,0)

or:

SelectEvery(4,1)

etc. The first takes every 4th frame beginning with the first one. The second one takes every 4th frame beginning with the second one:

http://avisynth.org/mediawiki/SelectEvery

Whatever you want, it's simple with some basic AviSynth knowledge, but I'm not quite sure yet what you have or what you want. A small sample uploaded somewhere for us to have a look might help.

As for remultiplexing, if you have a Lagarith AVI when done, you can use VDub(Mod) to mux the audio and video. I'm not quite sure why a lossless codec producing large file sizes is so important, as I don't guess the original quality of this video is all that good. If you're making an MPG or a DVD, you'd use other muxers (ImagoMPEG-Muxer, Muxman, etc.).