>>159818
提示いただいたffmpegを入れなおしてやってみましたがダメでした
まずffmpeg -version　から

ffmpeg version 2024-06-03-git-77ad449911-essentials_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 13.2.0 (Rev5, Built by MSYS2 project)

次にNicoCache_nlのログです

hls to single: sm9[360p,128].hls 新・豪血寺一族 -煩悩解放 - レッツゴー！陰陽師.mp4
hls to single: cannot convert hls to mp4.
hls to single: args: "ffmpeg" "-loglevel" "debug" "-hide_banner" "-allowed_extensions" "m3u8,cmfv,cmfa,key,mp4,m4s,m4a,ts,webm,flv" "-protocol_whitelist" "crypto,tcp,tls,https,file" "-i" "E:\新しいフォルダ\動画\cache\sm9[360p,128]_新・豪血寺一族 -煩悩解放 - レッツゴー！陰陽師.hls/master.m3u8" "-c:v" "copy" "-c:a" "copy" "-id3v2_version" "3" "-metadata" "title=新・豪血寺一族 -煩悩解放 - レッツゴー！陰陽師" "-metadata" "comment=sm9[360p,128].hls" "-y" "C:\Users\Owner\AppData\Local\Temp\nlHls2Mp4_5513156554792715724.mp4"
hls to single: Splitting the commandline.
hls to single: Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
hls to single: Reading option '-hide_banner' ... matched as option 'hide_banner' (do not show program banner) with argument '1'.
hls to single: Reading option '-allowed_extensions' ...Unrecognized option 'allowed_extensions'.
hls to single: Error splitting the argument list: Option not found