else
                {

                    FileInfo file = new FileInfo(filePath);
                    long size = (long)file.Length;


                    byte[] chunk = new byte[1024 * 1024 * 4]; // чанк 4MB
                    long startPosition = 0;
                    int index = 0;

                    if (headersDictionary.Keys.Contains("Range:"))
                    {
                        int.TryParse(headersDictionary["Range:"].Split(new char[] { '=', '-' })[1], out int range);

                        startPosition = range;
                    }

                    if ((size - startPosition) < chunk.Length)
                    {
                        chunk = new byte[size - startPosition];
                    }


                    try
                    {

                        using(var fileStream = File.OpenRead(filePath))
                        {
                            fileStream.Position = startPosition;

                            var chunkSize = fileStream.Read(chunk, index, chunk.Length);

                            Console.WriteLine(chunk.Length);
                        }
                    }
                    catch (Exception ex)
                    {

                        Console.WriteLine(ex);
                    }

                    byte[] httpHeadersBytes = Encoding.UTF8.GetBytes(
                    "HTTP/1.1 206 Partial Content\r\n" +
                    $"Content-Length: {file.Length}\r\n" +
                    "Accept-Ranges: bytes\r\n" +
                    $"Content-Range: bytes {startPosition} - {file.Length - 1} / {file.Length}\r\n" +
                    $"Content-Type: video/webm\r\n\r\n");

                    byte[] httpResponseBytes = httpHeadersBytes.Concat(chunk).ToArray();

                    writer.BaseStream.Write(httpResponseBytes, 0, httpResponseBytes.Length);
                }