Disable binkaudio sound for FFmpeg libavocdec versions below 54.55.xxx (Windows x64) and 54.10.xxx (Windows 32bit). Later versions are all allowed, but due to sample formats there will be no sound and this message will be shown on the console "Sound Error: Unsupported sample format: fltp"

apps/openmw/mwrender/videoplayer.cpp

@@ -50,6 +50,29 @@ extern "C"
     #endif
 }
 
+#ifdef _WIN32
+    // Decide whether to play binkaudio.
+    #include <libavcodec/version.h>
+    // libavcodec versions 54.10.100 (or maybe earlier) to 54.54.100 potentially crashes Windows 64bit.
+    // From version 54.56 or higher, there's no sound due to the encoding format changing from S16 to FLTP
+    // (see https://gitorious.org/ffmpeg/ffmpeg/commit/7bfd1766d1c18f07b0a2dd042418a874d49ea60d and
+    // http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=3049d5b9b32845c86aa5588bb3352bdeb2edfdb2;hp=43c6b45a53a186a187f7266e4d6bd3c2620519f1),
+    // but does not crash (or at least no known crash).
+    #if (LIBAVCODEC_VERSION_MAJOR > 54)
+        #define FFMPEG_PLAY_BINKAUDIO
+    #else
+        #ifdef _WIN64
+            #if ((LIBAVCODEC_VERSION_MAJOR == 54) && (LIBAVCODEC_VERSION_MINOR >= 55))
+                #define FFMPEG_PLAY_BINKAUDIO
+            #endif
+        #else
+            #if ((LIBAVCODEC_VERSION_MAJOR == 54) && (LIBAVCODEC_VERSION_MINOR >= 10))
+                #define FFMPEG_PLAY_BINKAUDIO
+            #endif
+        #endif
+    #endif
+#endif
+
 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
 #define AV_SYNC_THRESHOLD 0.01
@@ -970,8 +993,12 @@ void VideoState::init(const std::string& resourceName)
         MWBase::Environment::get().getSoundManager()->pauseSounds();
 
     this->external_clock_base = av_gettime();
+#if !defined(_WIN32) || defined(FFMPEG_PLAY_BINKAUDIO)
     if(audio_index >= 0)
         this->stream_open(audio_index, this->format_ctx);
+#else
+    std::cout<<"FFmpeg sound disabled for \""+resourceName+"\""<<std::endl;
+#endif
     if(video_index >= 0)
     {
         this->stream_open(video_index, this->format_ctx);