Parse common subtitles
$ dotnet add package Mobsub.SubtitleParseParse common subtitles. Now support ass and srt.
using Mobsub.SubtitleParse;
using Mobsub.SubtitleParse.AssTypes;
var ass = new AssData() { };
ass.ReadAssFile(YourAssFile);
ass.WriteAssFile(YourNewAssFile);
var srt = new SubRipText();
srt.FromAss(ass);
srt.WriteSrtFile(YourNewSrtFile, false);