Dont normalize audio for mixed audio. This matches app audio|device audio mix, fixes mic audio being decreased

TODO

@@ -204,6 +204,7 @@ Ffmpeg fixed black bars in videos on amd when using hevc and when recording at s
     https://github.com/FFmpeg/FFmpeg/commit/bcfbf2bac8f9eeeedc407b40596f5c7aaa0d5b47
     https://github.com/FFmpeg/FFmpeg/commit/d0facac679faf45d3356dff2e2cb382580d7a521
     Disable gpu screen recorder black bar handling when using hevc on amd when the libavcodec version is the one that comes after those commits.
+    Also consider the mesa version, to see if the gpu supports this.
 
 Use opengl compute shader instead of graphics shader. This might allow for better performance when games are using 100% of graphics unit which might fix issue with 100% gpu usage causing gpu screen recorder to run slow when not using vaapi to convert rgb to nv12(?).
 

src/main.cpp

@@ -1767,8 +1767,15 @@ static int init_filter_graph(AVCodecContext *audio_codec_context, AVFilterGraph
         return AVERROR_FILTER_NOT_FOUND;
     }
 
+#if LIBAVFILTER_VERSION_INT >= AV_VERSION_INT(7, 107, 100)
+    bool normalize = false;
+    char args[512];
+    snprintf(args, sizeof(args), "inputs=%d:normalize=%s", (int)num_sources, normalize ? "true" : "false");
+#else
     char args[512];
     snprintf(args, sizeof(args), "inputs=%d", (int)num_sources);
+    fprintf(stderr, "Warning: your ffmpeg version doesn't support disabling normalizing of mixed audio. Volume might be lower than expected\n");
+#endif
 
     AVFilterContext *mix_ctx;
     err = avfilter_graph_create_filter(&mix_ctx, mix_filter, "amix", args, NULL, filter_graph);