diff --git a/.gitignore b/.gitignore
index 9126c8f..6ea2ceb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 /target
 /aur
 *.log
+.DS_Store
+*.json
diff --git a/src/vmaf.rs b/src/vmaf.rs
index 1f7113f..b7240fc 100644
--- a/src/vmaf.rs
+++ b/src/vmaf.rs
@@ -22,8 +22,7 @@ pub fn run(
     );
 
     let mut cmd = Command::new("ffmpeg");
-    cmd.kill_on_drop(true)
-        .arg2_opt("-r", fps)
+    cmd.arg2_opt("-r", fps)
         .arg2("-i", distorted)
         .arg2_opt("-r", fps)
         .arg2("-i", reference)