diff --git a/src/Config.hpp b/src/Config.hpp
index 29f7823..2b69c0a 100644
--- a/src/Config.hpp
+++ b/src/Config.hpp
@@ -37,7 +37,7 @@ class Config final {
   // color
   uint8_t colorPrimaries = 1;
   uint8_t transferCharacteristics = 13;
-  uint8_t matrixCoefficients = 9;
+  uint8_t matrixCoefficients = 1;
   // encoding
   aom_codec_enc_cfg codec{};
   aom_scaling_mode_t scaleMode = {