If you use Gfycat to make your GIFs jiffier, uploading each GIF you have one at a time is neither convenient nor practical.
Use GfycatBulk to batch upload your GIFs and download your converted MP4s automatically.
This version was tested on Python 2.7.5
It uses the requests library, so you'll need to install that if you haven't already. It's totally worth having anyway.
Place the GIFs in a folder named GIF, and create a folder named MP4. When you run the script, the newly converted MP4s will be saved to the MP4 folder.
Feel free to send in pull requests.