It's funny that you ask about timelapses, I just got home a couple of hours ago after shooting one at the Castle of Bellinzona. I came home with about 1000 jpegs
Timelapse is a challenging situation, especially when doing it for sunsets/sunrises. I tried to look at yours but the playback was awful, I think it's a Youtube issue. Take a look at this one I made some weeks ago:
http://exposureroom.com/members/murdock ... 833c391a8/
Timelapses of sunsets and sunrise are more challenging because you have a change in light intensity and a change in color temperature. Generally, these rules will help you get good results (in case you are unaware of them):
#1. Set the camera to to aperture priority mode and select the widest possible aperture your lens can handle. More on this on the bottom.
#2. Set a manual ISO. You don't want your camera to start increasing the ISO as it gets darker and introduce flickering and noise on your images. I usually use ISO 200.
#3. Set a manual white balance. As the sun sets/rises, the color temperature of the picture changes and the camera, if set to auto white balance, will try adjust it and create strong flickering.
I set the aperture to the widest because, otherwise, on each picture taken, the iris of the lens will close and open at every exposure. These electronic devices are not perfectly precise, and so the iris will not close by the same amount at each exposure. Therefore, these small variations will create flickering on the final video. By setting the aperture to maximum, the iris does not close from its current position, so this problem is greatly reduced. This, of course, creates other inconveniences, like a shallow depth of field, so you'll have to plan for that.
The best timelapse done with DSLR's I have seen is from Phillip Bloom, check one of his here:
His timelapse is almost flicker-free, but he uses a software (I forgot its name) that removes flickering very effectively but it costs like USD 1'600...
Hope this helps...