ffmpeg.exe -i http://t7.cdn2020.com:12359/video/m3u8/2021/04/11/d9fed0ed/index.m3u8 D:\output.mp4
ffmpeg -i http://t7.cdn2020.com:12359/video/m3u8/2021/04/11/d9fed0ed/index.m3u8 -acodec copy -vcodec copy -absf aac_adtstoasc D:\output2.mp4
原文：https://www.cnblogs.com/kikyoqiang/p/15021708.html