I think it all depends on what you are trying to accomplish. My objective for the pine farm is tracking population trends, sex ratios, and doe to fawn ratios year-to-year as well as getting an inventory of mature bucks using the property. Video just doesn't cut it for that. I don't do baited surveys. Instead, I have a wireless camera network that runs 24/7/365. Once every week or so, I go through pictures and identify each animal and record the information in a database along with the picture. As others have pointed out, the storage requirements for video is much higher. Also, you can't take advantage of higher resolution and zoom in. However, the greatest downside I found was the time it takes to go thorough video clips to extract information.
There are two objectives where I think video is great. The first is education. I've taken a lot of video, both with game cameras and when hunting that I've used when teaching Hunter Education. I find this works great for teaching shot selection. You can't always pick up on the demeanor of a deer from a still picture.
The second place where video is great when it is used for hunting. Not only can you see what, in general, is using your place, you can also see how they relate to your habitat. I have a small retirement property with a few cams. Video mode is great for that situation.
Thanks,
Jack