diff --git a/apps/openmw/CMakeLists.txt b/apps/openmw/CMakeLists.txt
index e2cb0e5c4..b685c6083 100644
--- a/apps/openmw/CMakeLists.txt
+++ b/apps/openmw/CMakeLists.txt
@@ -125,6 +125,12 @@ if(APPLE)
     find_library(COCOA_FRAMEWORK Cocoa)
     find_library(IOKIT_FRAMEWORK IOKit)
     target_link_libraries(openmw ${CARBON_FRAMEWORK} ${COCOA_FRAMEWORK} ${IOKIT_FRAMEWORK})
+
+    if (FFMPEG_FOUND)
+        find_library(COREVIDEO_FRAMEWORK CoreVideo)
+        find_library(VDA_FRAMEWORK VideoDecodeAcceleration)
+        target_link_libraries(openmw ${COREVIDEO_FRAMEWORK} ${VDA_FRAMEWORK})
+    endif()
 endif(APPLE)
 
 if(DPKG_PROGRAM)
diff --git a/apps/openmw/mwsound/ffmpeg_decoder.cpp b/apps/openmw/mwsound/ffmpeg_decoder.cpp
index 261a86ca6..00530a962 100644
--- a/apps/openmw/mwsound/ffmpeg_decoder.cpp
+++ b/apps/openmw/mwsound/ffmpeg_decoder.cpp
@@ -160,6 +160,7 @@ void FFmpeg_Decoder::open(const std::string &fname)
         {
             if(mFormatCtx->streams[j]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
             {
+                mFormatCtx->streams[j]->codec->request_sample_fmt = AV_SAMPLE_FMT_S16;
                 mStream = &mFormatCtx->streams[j];
                 break;
             }