android mediacodec decode data to surface and save to mp4

The Byte Stream is being fed live to me from an external source with websocket

1. I use encoder bind new surface

encodeSurface = encoder.createInputSurface(); 

2. bind the decode to the surface

mediaCodecDecoder = MediaCodec.createDecoderByType(MediaFormat.MIMETYPE_VIDEO_HEVC); mediaCodecDecoder.configure(format, encodeSurface , null, 0); mediaCodecDecoder.start(); 

2. when I Received byte[] data,use mediacodec decode

int index = mediaCodecDecoder.dequeueInputBuffer(10_000); ByteBuffer byteBuffer = mediaCodecDecoder.getInputBuffer(index); byteBuffer.put(data); mediaCodecDecoder.queueInputBuffer(index, 0, data.length,System.currentTimeMillis(),0); int encoderStatus = mediaCodecDecoder.dequeueOutputBuffer(this.decodeBufferInfo, 1_000); if(encoderStatus>0){ mediaCodecDecoder.releaseOutputBuffer(encoderStatus, true); } 

4. Then, I can directly retrieve data from the encoding buffer

while(true){ int outputBufferIndex = mediaCodecEncoder.dequeueOutputBuffer(encodeBufferInfo, 10_000); ByteBuffer encodedData = mediaCodecEncoder.getOutputBuffer(outputBufferIndex); encodedData.position(encodeBufferInfo.offset); encodedData.limit(encodeBufferInfo.offset + encodeBufferInfo.size); encodeBufferInfo.presentationTimeUs = encodeBufferInfo.presentationTimeUs * 1000; mediaMuxer.writeSampleData(trackIndex, encodedData, encodeBufferInfo); mediaCodecEncoder.releaseOutputBuffer(outputBufferIndex, false); 

Finally, I obtained the mp4 file, but the steps were cumbersome and required decoding before encoding. How to directly use raw stream data and mediamuxer to obtain MP4 I tried to use it,But this code doesn't work, not a single frame of data has been written to MP4

byte[]data; if (!muxerStarted) { MediaFormat videoFormat = MediaFormat.createVideoFormat(MediaFormat.MIMETYPE_VIDEO_HEVC, width, height); videoFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Flexible); videoFormat.setInteger(MediaFormat.KEY_FRAME_RATE, 30); videoFormat.setInteger(MediaFormat.KEY_BIT_RATE, 1000_000); videoFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 5); trackIndex = mediaMuxer.addTrack(videoFormat); mediaMuxer.start(); muxerStarted = true; } MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo(); bufferInfo.offset = 0; bufferInfo.presentationTimeUs = System.currentTimeMillis(); bufferInfo.flags = frameType; bufferInfo.size = data.length; ByteBuffer encodeData = ByteBuffer.wrap(data); mediaMuxer.writeSampleData(trackIndex, encodeData, bufferInfo);