FFmpeg converts M3U to mp3, error: Invalid data found when processing input

Command: 

-sharpEXTM3U
http://player.acfun.cn/route_mp4?dt=0&uid=0&timestamp=1529889316&fid=030002010056D9063AF9692D9B7D2FCC7380FE-FFE8-AD01-3806-1B72868E9764.flv&ns=video.acfun.cn&ran=0&vid=585cfe740cf2e963ad610b98&customer_id=5859fdaee4b0eaf5dd325b91&sign=ct5b3042240cf22ea1f09bb7eb

create a new file with the suffix .m3u , and copy this segment into it to play. But why not transcode to .mp3 ?

Ffmpeg m3u8 mp3 Video
Mar.21,2021

seems to be because my FFMpeg does not support .m3u .

ffmpeg-formats you can view the encapsulation formats supported by your FFMpeg.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1be89cd-31918.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1be89cd-31918.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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