I'm following the updated version of the original dranger.com/ffmpeg tutorial at https://github.com/mpenkov/ffmpeg-tutorial
The third step(Source code: https://github.com/mpenkov/ffmpeg-tutorial/blob/master/tutorial03.c) adds sound, but the sound produced is strange. When the audio stream is AAC I only hear static. When the audio stream is MP3 I hear a very high pitched version of the sound.
What's wrong?
I've had the same exact issue. After days of trying, I figured out it was something wrong with the latest build that I was using from Zeranoe.
If you are using Zeranoe builds as well, try using the 26c531c build (anything above it will produce the issue).
来源：https://stackoverflow.com/questions/14452817/strange-sound-produced-by-ffmpeg-and-sdl