[ffmpeg] ffmpeg encode raw audio (pcm) into other formats (mp3, aac, wav, etc)
inputrawaudioinfo:samplerate:44.1ksampleformat:16bitsignedinteger,littleendianchannelnumbers:2encodingtherawpcmaudiointo.wavusingffmpeg,commandline:ffmpeg-fs16le-ar44.1k-ac2-iinput_file.pcmoutput_file