diff --git a/silk/dred_encoder.c b/silk/dred_encoder.c
index 459b26e6cc9b3657cc36b33ed55358f476cdee94..51a895bed9399592903ad98cd3160fc61d5c1c12 100644
--- a/silk/dred_encoder.c
+++ b/silk/dred_encoder.c
@@ -75,6 +75,14 @@ void dred_encode_silk_frame(DREDEnc *enc, const opus_int16 *silk_frame)
 
 #if 1
     printf("packet size: %d\n", bytes*8);
+
+    static FILE *fbs = NULL;
+    if (fbs == NULL)
+    {
+        fbs = fopen("dred_bitstream.bin", "wb");
+    }
+    fwrite(&bytes, sizeof(bytes), 1, fbs);
+    fwrite(ec_get_buffer(&enc->ec_encoder), 1, bytes, fbs);
 #endif
 
 
diff --git a/silk/dred_encoder.h b/silk/dred_encoder.h
index 0a7ea5cb5ef3257120da9a200a5c0396448bfe2e..a462e56dfef8e738010f0d24960b4058111b3c5c 100644
--- a/silk/dred_encoder.h
+++ b/silk/dred_encoder.h
@@ -1,3 +1,30 @@
+/* Copyright (c) 2022 Amazon
+   Written by Jan Buethe */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
 #ifndef _DRED_ENCODER_H
 #define _DRED_ENCODER_H