Android Asynctask to process live video frames

Question

I am using OpenCV to attempt to do some live video processing. Since the processing is fairly heavy, it delays the output frames significantly, making the live stream look

Answer 1

If you're doing this on each frame, it sounds like you need a thread instead. An AsyncTask is for when you want to do a one-off activity on another thread. Here you want to do it repeatedly. Just create a thread, and when it finishes a frame have it post a message to a handler to run the post step on the UI thread. It can wait on a semaphore at the top of its loop for the next frame to be ready.