In order to render out into video, you need to do the following:

1: Go into your render globals.
2: Set the image format to AVI.
3: Select your compression and set your start and end frame.
4: Batch render away

However you will get better results using the following:

1: Go into render globals again
2: Set the frame/animation ext to name_#.ext (which will produce something like boat_1.jpg
3: set the image format to a lossless format
4: set your start and end frame again and also depending on the amount of frames set the frame padding (if you have say 100 frames set the frame padding to 3 and it will call your images in sequence from 001,002,003 ect. instead of 1,2,3) This helps to keep an order, and some image to video editors will get confused.
5: Batch render away
6: Get a program like video mach that you can load an image sequence into in one click, and then render down into video from there.

The last method will allow you to play with settings and compression with a much smaller time invested.