I have generated few .hdr
files using Sketchup and V-Ray.
Now I want to combine all those files to create a movie.
Well it seems the best option is to use Photoshop,but
I don't have Photoshop,and I don't want it.
Can any one tell me about an open source software, well equipped to do this?
I can view these files in Luminance HDR,but cant create a movie there.
The Open Source version of PhotoShop is GIMP. If you are proficient with PhotoShop you might have a hard time getting to re-learn everything since it does things differently (sometimes harder, sometimes easier). With GIMP you can do amazing things with images.
But this is mainly for editing images (as is PhotoShop) and putting them after one another (but that is not a movie but a slideshow).
If you are talking about movies then Blender might be what you are looking for.
Some external links to video's where someone used HDR images to create movies and/or recorded a movie with HDR: