But what if I just want to 'assemble?" VirtualDub (Windows only) can assemble image sequences into AVI videos. It can't read TIFF files, unfortunately, but if you're willing to render to PNG instead, it can handle that. Use a lossless video codec like Huffyuv while assembling, editing, and postworking the video to insure maximum image quality before converting and compressing the finished video to MPEG-2 and burning it to DVD.