I finally generated AAC files that are playable on both the Android device and the Windows host computer. I am posting my solution here, hoping it could help others. First, my previous assumption that the Android MediaCodec encoder generates the elementary AAC stream was not accurate. The MediaCodec encoder generates the raw AAC stream. That’s … Read more
After testing this is what I came up with from modifying your code: package com.example.app; import android.app.Activity; import android.media.AudioManager; import android.media.MediaCodecInfo; import android.media.MediaFormat; import android.os.Bundle; import android.media.AudioFormat; import android.media.AudioRecord; import android.media.AudioTrack; import android.media.MediaCodec; import android.media.MediaRecorder.AudioSource; import android.util.Log; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketAddress; import java.net.SocketException; import java.nio.ByteBuffer; public class MainActivity extends … Read more
The way SurfaceTexture works makes this a bit tricky to get right. The docs say the frame-available callback “is called on an arbitrary thread”. The SurfaceTexture class has a bit of code that does the following when initializing (line 318): if (this thread has a looper) { handle events on this thread } else if … Read more
I think you’re seeing some effects unique to the first frame. I repeated your experiment, with the further addition of forcing doRender = false around line 244 to avoid the sleep calls used to manage the output frame rate. I see: 01-29 14:05:36.552 9115 9224 I Grafika : queueInputBuffer index/pts, 2,0 01-29 14:05:36.562 9115 9224 … Read more
I’m assuming you’re reading a raw H.264 elementary stream and not an MP4 file. It looks like you’re feeding fixed-size blocks of data to the decoder. That doesn’t work. You need to put a single access unit into each buffer.
I don’t know much about the MediaMuxer but ffmpeg does support overlaying functionality. FFMPEG has various filters one of them is overlay filter. What I understand is you want to overlay an image (i.e. png) on the video, ffmpeg surely is a useful framework to do this job. You can set the output format you … Read more