diff --git a/src/swf/UncompressSWF.ts b/src/swf/UncompressSWF.ts
index 3c5e12b..0b7ba3e 100644
--- a/src/swf/UncompressSWF.ts
+++ b/src/swf/UncompressSWF.ts
@@ -1,4 +1,5 @@
-import lzma from 'lzma-purejs';
+import * as lzma from 'lzma-purejs';
+import { Stream } from 'stream';
 import { promisify } from 'util';
 import { unzip } from 'zlib';
 import { ReadSWFBuff } from './ReadSWFBuffer';
@@ -8,12 +9,12 @@ export const UncompressSWF = async (rawBuffer: Buffer) =>
 {
     if(!Buffer.isBuffer(rawBuffer)) return null;
 
-    const compressed_buff = rawBuffer.slice(8);
+    let compressedBuffer = rawBuffer.slice(8);
 
     switch(rawBuffer[0])
     {
         case 0x43: { // zlib compressed
-            const buffer = await (promisify(unzip)(compressed_buff));
+            const buffer = await (promisify(unzip)(compressedBuffer));
 
             if(!Buffer.isBuffer(buffer)) return null;
 
@@ -22,7 +23,58 @@ export const UncompressSWF = async (rawBuffer: Buffer) =>
         case 0x46: // uncompressed
             return ReadSWFBuff(new SWFBuffer(rawBuffer), rawBuffer);
         case 0x5a: { // LZMA compressed
-            const buffer = Buffer.concat([ rawBuffer.slice(0, 8), lzma.decompressFile(compressed_buff) ]);
+            const lzmaProperties = compressedBuffer.slice(4, 9);
+            compressedBuffer = compressedBuffer.slice(9);
+
+            const inputStream = new Stream();
+
+            let inputPos = 0;
+
+            //@ts-ignore
+            inputStream.readByte = () =>
+            {
+                return inputPos >= compressedBuffer.length ? -1 : compressedBuffer[inputPos++];
+            };
+
+            const outputStream = new Stream();
+
+            let outputBuffer = Buffer.alloc(16384);
+            let outputPos = 0;
+
+            //@ts-ignore
+            outputStream.writeByte = (_byte: number) =>
+            {
+                if(outputPos >= outputBuffer.length)
+                {
+                    const newBuffer = Buffer.alloc(outputBuffer.length * 2);
+
+                    outputBuffer.copy(newBuffer);
+                    outputBuffer = newBuffer;
+                }
+
+                outputBuffer[outputPos++] = _byte;
+
+                return true;
+            };
+
+            //@ts-ignore
+            outputStream.getBuffer = () =>
+            {
+                // trim buffer
+                if(outputPos !== outputBuffer.length)
+                {
+                    const newBuffer = Buffer.alloc(outputPos);
+                    outputBuffer.copy(newBuffer, 0, 0, outputPos);
+                    outputBuffer = newBuffer;
+                }
+
+                return outputBuffer;
+            };
+
+            lzma.decompress(lzmaProperties, inputStream, outputStream, -1);
+
+            //@ts-ignore
+            const buffer = Buffer.concat([ rawBuffer.slice(0, 8), outputStream.getBuffer() ]);
 
             if(!Buffer.isBuffer(buffer)) return null;