FFmpeg-JNI

This project transcode mp3 files into pcm files by using FFmpeg native method.

Why

• Native methods can improve transcoding efficiency and reduce the cost of process switching.
• Most of voice evaluation system require pcm source files, and this format is not commonly used. So audio transcoding will be used frequently.

Build

1. Install FFmpeg
2. Modify shell variable
3. Compile to binary using linux.sh or mac.sh
4. Modify AudioTranscoder.java
5. Run AudioTranscoder main method