public Sample(Stream stream)
{
BinaryReader reader = new BinaryReader(stream);
if(reader.ReadInt32() != -1)Used = true;
Index = reader.ReadInt32();
Type = reader.ReadInt32();
StartOffset = reader.ReadInt32();
Length = reader.ReadInt32();
reader.ReadInt32();
reader.ReadInt32();
Rate = reader.ReadInt32();
}