将FileInputStream和FileOutputStream传递给ffmpeg进行转码（使用JAVE-Java音频视频编码）

I am trying to transcode a *.mov file into a *.mp4 file using JAVE, which calls ffmpeg. Both input file and output file are in InputStream and OutputStream forms. That means I need to pass InputStream and OutputStream as -i and -y parematers for ffmpeg. How do I do that ?I am trying to transcode a *.mov file into a *.