I have Video Camera issues.

What performance issues exist with camera/video iOS apps?

• How badly does the battery drain if the camera is open in the background while the user is doing other things within the app? Negligible? Are there other concerns (or tips) to be aware of when developing a video recording app?

• Answer:

  Camera could drain power rather quickly. And it consumes even more power in video mode than in photo preview mode, because of larger image size and higher capture rate. If you are going to use filters while recording, power consumption would be even higher and it is quite hard to achieve a acceptable frame rate. In the Musemage app, we managed to achieve a lot of functions like video stabilization, video HDR, green-screen, filters including comics styles, tilt blur, color styles. These features are based on our own real-time video processing engine and requires better devices (iPhone 5s or above). With coreImage or GPUimage, only some of the features could be achieved.