static void Main(string[] args)
{
byte[] b = File.ReadAllBytes(@"test.ogg");
using (VorbisFile file = new VorbisFile(b)) {
List <OggPage> pageHeaders = file.GetPageHeaders();
VorbisHeader commentHeader = null;
foreach (var pageHeader in pageHeaders)
{
commentHeader = pageHeader.GetCommentHeader();
if (commentHeader != null)
{
break;
}
}
if (commentHeader == null)
{
throw new Exception("comment header not found");
}
if (commentHeader.PacketType == 3)
{
var c = commentHeader.ExtractComments();
Console.WriteLine(c.Vendor);
Console.WriteLine(string.Join(", ", c.Comments.Select(p => p.Key + ": " + p.Value)));
c.Comments["LOOPSTART"] = "100000";
c.Comments["LOOPLENGTH"] = "150000";
using (VorbisFile newFile = new VorbisFile(file, c)) {
File.WriteAllBytes("out.ogg", newFile.ToByteArray());
}
}
}
}
