To burn dvd video in ImgBurn, go to Build Mode, or if you are using the EZ mode startup, click on Write files/folders to disc, which is just another way to get to Build mode.
At the top of the main section, look at Output. Make sure this is set to Device.
Import your Video_TS folder into ImgBurn. You can do this by clicking File-->Browse for source folder, or you can click on the little folder icon in the main window of ImgBurn. You don't need the Audio_TS folder, but it doesn't hurt to import it as well.
Now on the right side of the main window in ImgBurn, click on Device tab and set your burning speed. ImgBurn will remember this speed once you set it. For most 16x media, I recommend either 8x or 12x speed.
Next click Options. It should be set for ISO9660 + UDF 1.02, but if you are burning dvd-video, ImgBurn will recognize that fact and ask to set this for you in a little pop up warning message if you have it wrong.
The last thing you need to do is go to Labels and write a name for the file you are burning.
Since you want to verify the burn, make sure there is a check mark in Verify in the main window of ImgBurn.
Click on the folder to disk icon at the bottom to start the burn.
You can also look through this tutorial, if you need more help: http://forum.imgburn.com/index.php?showtopic=4632