use av1 for encoding

src/main.rs

@@ -29,9 +29,7 @@ fn main() {
             "-i",
             "-",
             "-c:v",
-            "libx264",
+            "libsvtav1",
-            "-preset",
-            "fast",
             "output.mp4",
         ])
         .stdin(std::process::Stdio::piped())