diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5337bd04b..064422939 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -43,6 +43,7 @@ All notable changes to this project will be documented in this file.
 - [#1938] "Open loaded during play" Loader injection for Multiname types
 - AS3 - not using visitCode when not needed => faster decompilation
 - Cache thread as daemon
+- [#1949] Incorrect reading FIXED and FIXED8 SWF values causing wrong Filters size and OutOfMemory
  
 ## [18.3.2] - 2023-01-10
 ### Removed
@@ -2910,6 +2911,7 @@ All notable changes to this project will be documented in this file.
 [#1458]: https://www.free-decompiler.com/flash/issues/1458
 [#1842]: https://www.free-decompiler.com/flash/issues/1842
 [#1938]: https://www.free-decompiler.com/flash/issues/1938
+[#1949]: https://www.free-decompiler.com/flash/issues/1949
 [#1935]: https://www.free-decompiler.com/flash/issues/1935
 [#1931]: https://www.free-decompiler.com/flash/issues/1931
 [#1934]: https://www.free-decompiler.com/flash/issues/1934
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
index 8d877a488..d01e97640 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
@@ -593,14 +593,19 @@ public class SWFInputStream implements AutoCloseable {
      */
     public long readSI32(String name) throws IOException {
         newDumpLevel(name, "SI32");
-        long uval = readEx() + (readEx() << 8) + (readEx() << 16) + (readEx() << 24);
-        if (uval >= 0x80000000) {
-            uval = -(((~uval) & 0xffffffff) + 1);
-        }
+        long uval = readSI32Internal();
         endDumpLevel(uval);
         return uval;
     }
 
+    private long readSI32Internal() throws IOException {
+        long uval = readEx() + (readEx() << 8) + (readEx() << 16) + (readEx() << 24);
+        if (uval >= 0x80000000) {
+            uval = -(((~uval) & 0xffffffff) + 1);
+        }
+        return uval;
+    }
+    
     /**
      * Reads one SI16 (Signed 16bit integer) value from the stream
      *
@@ -610,11 +615,16 @@ public class SWFInputStream implements AutoCloseable {
      */
     public int readSI16(String name) throws IOException {
         newDumpLevel(name, "SI16");
+        int uval = readSI16Internal();
+        endDumpLevel(uval);
+        return uval;
+    }
+    
+    private int readSI16Internal() throws IOException {
         int uval = readEx() + (readEx() << 8);
         if (uval >= 0x8000) {
             uval = -(((~uval) & 0xffff) + 1);
         }
-        endDumpLevel(uval);
         return uval;
     }
 
@@ -655,9 +665,8 @@ public class SWFInputStream implements AutoCloseable {
      */
     public double readFIXED(String name) throws IOException {
         newDumpLevel(name, "FIXED");
-        int afterPoint = readUI16Internal();
-        int beforePoint = readUI16Internal();
-        double ret = beforePoint + ((double) (afterPoint)) / 65536;
+        long si = readSI32Internal();
+        double ret = si / (double)(1 << 16);
         endDumpLevel(ret);
         return ret;
     }
@@ -671,9 +680,8 @@ public class SWFInputStream implements AutoCloseable {
      */
     public float readFIXED8(String name) throws IOException {
         newDumpLevel(name, "FIXED8");
-        int afterPoint = readEx();
-        int beforePoint = readSI8Internal();
-        float ret = beforePoint + ((float) afterPoint) / 256;
+        int si = readSI16Internal();
+        float ret = si / (float)(1 << 8);
         endDumpLevel(ret);
         return ret;
     }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFOutputStream.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFOutputStream.java
index 472aae30e..caa416210 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFOutputStream.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFOutputStream.java
@@ -285,10 +285,7 @@ public class SWFOutputStream extends OutputStream {
      */
     public void writeFIXED(double value) throws IOException {
         long valueLong = (long) (value * (1 << 16));
-        int beforePoint = (int) valueLong >> 16;
-        int afterPoint = (int) valueLong % (1 << 16);
-        writeUI16(afterPoint);
-        writeUI16(beforePoint);
+        writeSI32(valueLong);
     }
 
     /**
@@ -299,10 +296,7 @@ public class SWFOutputStream extends OutputStream {
      */
     public void writeFIXED8(float value) throws IOException {
         int valueInt = (int) (value * (1 << 8));
-        int beforePoint = (int) valueInt >> 8;
-        int afterPoint = (int) valueInt % (1 << 8);
-        writeUI8(afterPoint);
-        writeSI8(beforePoint);
+        writeSI16(valueInt);
     }
 
     private void writeLong(long value) throws IOException {