import ffmpeg import os def join_artifacts(): audio_in = ffmpeg.input('audio_out.mp3') video_in = ffmpeg.input('video_out.mp4') ffmpeg.concat(video_in.filter("subtitles", "audio_out.srt"), audio_in, v=1, a=1).output('av_out.mp4').run() av_path = os.path.join(os.path.dirname(__file__), "av_out.mp4") return av_path