Converting packed to unpacked (possible)?

[fccHandler]

I searched briefly, but I don't think this has ever been asked before. Is it possible to losslessly convert an XviD "packed bitstream" AVI file into an unpacked AVI (and vice versa)?

Just curious. ;)

[BoNz1]

Mux to 3ivx mp4 then convert back to avi possibly? I don't know but this sounds like the best possibility to me.
EDIT: I don't know how to do unpacked -> packed though

[sysKin]

In theory it's possible (and even easy), in practice I'm not aware of any program that could do that.

It seems that we're in a big need of a program that could manipulate AVIs - change headers, parse streams, etc. Any volunteer to code such thing? Note that when/if such program is ready, I would be happy to add packed <-> nonpacked conversion. I just need a "base".

[bond]

Originally posted by BoNz1
Mux to 3ivx mp4 then convert back to avi possibly?that should be possible via mp4, as the 3ivx muxer is able to unpack packed bitstreams
tough beaware it sometimes creates vfr files when doing this, which will not be possible to hold in old avi

[fccHandler]

Thanks for the replies!