AtHome Video Streamer is a surveillance app that lets you turn any Android into a surveillance camera. Just install the app and in less than a minute you'll be ready to record.
To use this app properly, you need to have AtHome Camera - Home Security installed on another Android or computer. From this second application, you can watch what the camera is recording in real time from your Android device. You can even listen to the audio in fairly good quality.
By default the app will record constantly, but there are some other interesting options. One lets you start recording only when the camera detects motion, and the other lets you record only at certain times.
AtHome Video Streamer is an excellent security and surveillance app to transform an Android into a proper security camera. What's more, the quality of video and audio is very good (so long as you have a good Internet connection, of course).