这里是输入清单：
$ curl 'https://example.net/ipadlive/index_new.m3u8?sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=YYYY&hubid=51&zipcode='
#EXTM3U
#EXT-X-VERSION:4
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group",NAME="eng",DEFAULT=YES,AUTOSELECT=YES,LANGUAGE="en",URI="https://example.net/ipadlive/06_new.m3u8?cdnHost=da148.cdn.iptv.example.net&sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=CHAN&hubid=51&zipcode=&countycode=null&fta=null&optimumid=null&devicename=&devicetype=0&osver=&res=&fps="
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group",NAME="spa",DEFAULT=NO,AUTOSELECT=YES,LANGUAGE="en",URI="https://example.net/ipadlive/07_new.m3u8?cdnHost=da148.cdn.iptv.example.net&sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=CHAN&hubid=51&zipcode=&countycode=null&fta=null&optimumid=null&devicename=&devicetype=0&osver=&res=&fps="
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=479776,RESOLUTION=240x180,CODECS="avc1.42c00c,mp4a.40.2",AUDIO="group"
https://example.net/ipadlive/01_new.m3u8?cdnHost=da148.cdn.iptv.example.net&sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=CHAN&hubid=51&zipcode=&countycode=null&fta=null&optimumid=null&devicename=&devicetype=0&osver=&res=&fps=
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=780576,RESOLUTION=320x240,CODECS="avc1.42c00d,mp4a.40.2",AUDIO="group"
https://example.net/ipadlive/02_new.m3u8?cdnHost=da148.cdn.iptv.example.net&sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=CHAN&hubid=51&zipcode=&countycode=null&fta=null&optimumid=null&devicename=&devicetype=0&osver=&res=&fps=
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1079872,RESOLUTION=480x360,CODECS="avc1.42c01e,mp4a.40.2",AUDIO="group"
https://example.net/ipadlive/03_new.m3u8?cdnHost=da148.cdn.iptv.example.net&sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=CHAN&hubid=51&zipcode=&countycode=null&fta=null&optimumid=null&devicename=&devicetype=0&osver=&res=&fps=
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1682976,RESOLUTION=640x480,CODECS="avc1.42c01e,mp4a.40.2",AUDIO="group"
https://example.net/ipadlive/04_new.m3u8?cdnHost=da148.cdn.iptv.example.net&sessionid=81893121496608402793&ipaddress=x.x.x.x&callsign=CHAN&hubid=51&zipcode=&countycode=null&fta=null&optimumid=null&devicename=&devicetype=0&osver=&res=&fps=
我之前从未见过，其中音频流是与清单中列出的视频流不同的URL。
有没有一种方法可以将音频流和特定的视频流组合在一起以产生一个既包含音频又包含视频的新流？
我正在做这样的事情：
ffmpeg -i <manifest> -c copy test.m3u8，但我听不到任何声音。
我曾尝试将<manifest>更改为单个视频流，但随后没有音频。如果将其更改为AUDIO流，则不会收到视频。
最近，我遇到了将audio