From a2c97a8342fab6393280cc2f0e2ffb39c381d29c Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Thu, 23 Jan 2020 12:41:41 +0100
Subject: [PATCH] avcodec/mpegaudioenc_template: fix invalid shift of sample

Fixes: Ticket8010

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/mpegaudioenc_template.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/mpegaudioenc_template.c b/libavcodec/mpegaudioenc_template.c
index 93363fe1d2..12f7a098e6 100644
--- a/libavcodec/mpegaudioenc_template.c
+++ b/libavcodec/mpegaudioenc_template.c
@@ -701,7 +701,7 @@ static void encode_frame(MpegAudioContext *s,
 
                                 /* normalize to P bits */
                                 if (shift < 0)
-                                    q1 = sample << (-shift);
+                                    q1 = sample * (1 << -shift);
                                 else
                                     q1 = sample >> shift;
                                 q1 = (q1 * mult) >> P;