android Camer2 H264

Android Camera2 API allows developers to capture video frames directly from the camera sensor, which can be processed and encoded into various video formats, including H.264. Here are the general steps to capture and encode H.264 video using Camera2 API in Android:

1. Set up the CameraManager and CameraDevice to access the camera hardware.
2. Create a SurfaceTexture and configure it as the target for the camera preview.
3. Create a MediaCodec instance with H.264 as the output format, and configure it with the desired video resolution, bitrate, and frame rate settings.
4. Create an input Surface from the MediaCodec instance and set it as the output target for the camera preview.
5. Set up a buffer-to-buffer data flow between the camera preview output and the MediaCodec input, using a SurfaceTexture.OnFrameAvailableListener to receive new frames from the camera preview and pass them to the MediaCodec input.
6. Start the camera preview and MediaCodec encoding.
7. When done, stop the camera preview and MediaCodec encoding, and release all resources.

There are many details and variations involved in implementing this workflow, depending on the specific requirements and constraints of your application. It's also worth noting that H.264 encoding can be computationally intensive and may require hardware acceleration to achieve real-time performance. Therefore, it's important to test and optimize your implementation on various devices to ensure smooth and efficient video capture and encoding.