ffconcat version 1.0
file '/data/video-pipeline/HaTramAudio/project/012-Nguoi-Giu-Chiec-Chia-Khoa-Cua-Ngay-Hom-Qua/audio/intro-voice.wav'
file '/data/video-pipeline/HaTramAudio/project/012-Nguoi-Giu-Chiec-Chia-Khoa-Cua-Ngay-Hom-Qua/audio/intro-silence-2s.wav'