Number of threads used by ffmeg configurable

config.cpp

@@ -20,6 +20,8 @@ video_t video {
   24, // gop_size
   35, // crf
 
+  4, // threads
+
   "baseline"s, // profile
   "superfast"s, // preset
   "zerolatency"s // tune
@@ -118,6 +120,7 @@ void parse_file(const char *file) {
   int_f(vars, "max_b_frames", video.max_b_frames);
   int_f(vars, "gop_size", video.gop_size);
   int_f(vars, "crf", video.crf);
+  int_f(vars, "threads", video.threads);
   string_f(vars, "profile", video.profile);
   string_f(vars, "preset", video.preset);
   string_f(vars, "tune", video.tune);

config.h

@@ -11,6 +11,8 @@ struct video_t {
   int gop_size;
   int crf; // higher == more compression and less quality
 
+  int threads; // Number threads used by ffmpeg
+
   std::string profile;
   std::string preset;
   std::string tune;

sunshine.conf.example

@@ -28,6 +28,10 @@ gop_size = 24
 # Higher value means more compression, but less quality
 crf = 28
 
+# Number of threads used by ffmpeg to encode the video
+# threads = 4
+
+
 # See x264 --fullhelp for the different presets
 # profile = baseline
 # preset  = superfast

video.cpp

@@ -104,7 +104,7 @@ void encodeThread(
 
   ctx->slices = config.slicesPerFrame;
   ctx->thread_type = FF_THREAD_SLICE;
-  ctx->thread_count = std::min(config.slicesPerFrame, 4);
+  ctx->thread_count = config::video.threads;
 
 
   AVDictionary *options {nullptr};