我已经将.srt文件转换为.vtt，现在我需要将该.vtt转换为m3u8以便添加到main.m3u8文件中。
示例main.m3u8
#EXTM3U
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitle",NAME="#1 Fre",DEFAULT=NO,FORCED=NO,LANGUAGE="fre",URI="subtitles/planete_interdite_subtitle3_fre_vtt.m3u8"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitle",NAME="#2 Eng",DEFAULT=NO,FORCED=NO,LANGUAGE="eng",URI="subtitles/planete_interdite_subtitle4_eng_vtt.m3u8"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitle",NAME="#3 Eng",DEFAULT=NO,FORCED=NO,LANGUAGE="eng",URI="subtitles/planete_interdite_subtitle5_eng_vtt.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="low",NAME="#1 Fre",DEFAULT=YES,AUTOSELECT=YES,LANGUAGE="fre",URI="low/planete_interdite_228_h264_144p_audio1_fre.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="low",NAME="#2 Eng",DEFAULT=NO,AUTOSELECT=YES,LANGUAGE="eng",URI="low/planete_interdite_228_h264_144p_audio2_eng.m3u8"
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=314000,CODECS="avc1.66.30,mp4a.40.2",RESOLUTION=256x144,AUDIO="low",SUBTITLES="subtitle"
low/planete_interdite_228_h264_144p.m3u8
可能吗，或者我需要将字幕与视频一起转换？。