Animated jpgs?

Is there a way to make an animated image out of jpg files without re-encoding them?  Can this be done with the mng format?

Yes.

>>1
jng format. not the mng format. I believe that there are more programs that support mng than the jng format.

JNG by itself doesn't support animation, just tranparency.
MNG does support animation using JNG frames, though, so you'll have to first save your JPEGs as JNG, and then make them into an MNG.

Thanks!  I'll see if I can find a lossless jpg -> jng converter and a mng editor.  They seem to be ridiculously rare on Google...

Fuck, I'm starting to understand why nobody uses mng.  THERE'RE NO TOOLS FOR IT!  Never mind viewing them, you can hardly even *make* them!

Well, there is giam:
http://homepage3.nifty.com/furumizo/giamd.htm

But it's in Japanese so I can't tell what I'm doing.  Judging by filesizes, I haven't figured out how to feed it jpgs without it re-encoding them.  (It also doesn't accept jngs as input, oddly enough.)

On a related note, either the mngs it produces are bugged up, or Irfanview's mng plugin doesn't handle large mngs well.  Given Irfanview's gif performance, I'm leaning toward the latter.

Irfanview can save as jng with a plugin, but not convert jpg to jng losslessly.  No luck finding a tool for that task, either.

So, anyone know of a (free) tool that can do this?  String some jpgs into an animated mng without re-encoding the jpg data?

>>8
not exactly like that. you'd have to write your own to do that but gimp can work with mng

Hmm.  Okay then, thanks.