I like this but it's a bit fast. It would be cool to maybe let this play out over 30 seconds or so. Or maybe a second for each hour. In any event -- great work!
Awesome! Are the jpgs already this compressed when you get them? If I remember correctly, there is a bitrare setting for ffmpeg that you can adjust. It may default to a very low bitrate which causes a very blocky movie.
Part of it is because 15-minute sampling doesn't produce very smooth timelapse, but part could also be Twitter downsampling. I think the Youtube version looks better: