A camera is only worthwhile when
A: They are focused properly and lenses are clean
B: They are zoomed in enough to capture facial features (If your suspect is only 1/4" tall on video, no amount of enhancement will make them identifiable. Additionally, not every dept. has the capability to enhance video)
C: You have the local media willing to air your footage to the public, contrary to popular belief, the cops don't know every criminal on sight.
D: If you live in a moderate size to large city, your local officers are likely juggling a significant caseload that increases every day. Unfortunately, they have to prioritize the cases based on a lot of factors, including the chance of solvability. A thorough processing of the crime scene, fingerprinting and potentially DNA collection along with video boosts your odds.
If it were me, I'd invest in hardening the home first, metal security doors, deadbolt locks and solid wood doors. Security film on windows along with either wired or wireless alarms on each to detect opening and/or breakage.
Motion lights, keep shrubbery and trees trimmed along windows, if you opt for an alarm system, will it be monitored by a service or straight ring-down to the police? Silent or audible, both have advantages.
One of the best burglary deterrents is a nosey neighbor, if possible, get involved in a neighborhood watch.