How to browse that easily like playing a video? I guess it's not really necessary to make a movie, I can just browse by file. If I wanted to create a super-fast movie where every screencap was a frame, I could install ffmpeg and ImageMagick and use the convert
utility:
brew install imagemagick
brew install ffmpeg
convert 2015-04-13/*.jpg 2015-04-13-timelapse.mpeg