letsky192

> `ffmpeg -i index.m3u8 -i index.m3u8.meta -map_metadata 1 -bsf:v filter_units=remove_types=12 -codec copy output.mp4` 此问题同#188 求问`-bsf:v filter_units=remove_types=12`是什么意思啊。求科普各种`type`可以从哪里查到。

> 确实会舍弃ipv6的解析地址 > > ``` > time="2023-10-11T20:54:41.9983704+08:00" level=debug msg="[DNS] mirrors.tuna.tsinghua.edu.cn --> [2402:f000:1:400::2], from udp://172.21.0.21:53" > time="2023-10-11T20:54:41.9983704+08:00" level=debug msg="[DNS] mirrors.tuna.tsinghua.edu.cn --> [101.6.15.130], from udp://172.21.0.21:53" > time="2023-10-11T20:54:41.9983704+08:00" level=debug msg="[DNS] mirrors.tuna.tsinghua.edu.cn --> 101.6.15.130"...