stream detectorで逝ける
ffmpeg -user_agent "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36" -referer "https://qlover.jp/"; \
-i "https://hls-auth.cloud.stream.co.jp/mediaplaylist/***_720p.m3u8?session_id=***"; -c copy "【本当に女研***.mp4"
$ ffmpeg -version

ffmpeg version 7.0.1 Copyright (c) 2000-2024 the FFmpeg developers