MediaFormat.KEY_I_FRAME_INTERVAL only takes an integer value, and I assume this is what controls how frequent the encoder generates an I-frame right? So does that mean if I am using MediaCodec I cannot possibly generate I-frames more frequently?
I finally found a workaround for this issue!
Insert the following code before a key frame is needed, then it will generate a key frame on the next available frame.
Bundle b = new Bundle(); b.putInt(MediaCodec.PARAMETER_KEY_REQUEST_SYNC_FRAME, 0); encoder.setParameters(b);