Change rolling average window to all frames (#46)

* change rolling average window to all frames

* stop using format with parameter

Author: superyu1337

src/video.rs

@@ -1,4 +1,3 @@
-use std::cmp::min;
 use std::collections::BTreeMap;
 use std::io::stderr;
 use std::sync::{mpsc, Arc, Mutex};
@@ -483,15 +482,15 @@ fn compare_videos_inner<D: Decoder + 'static, E: Decoder + 'static>(
     };
 
     let mut results = BTreeMap::new();
-    let mut avg = 0f64;
+    let mut rolling_mean = 0f64;
     for score in result_rx {
         if verbose {
             println!("Frame {}: {:.8}", score.0, score.1);
         }
 
         results.insert(score.0, score.1);
-        avg = avg + (score.1 - avg) / (min(results.len(), 10) as f64);
-        progress.set_message(format!(", avg: {:.1$}", avg, 2));
+        rolling_mean = rolling_mean + (score.1 - rolling_mean) / (results.len() as f64);
+        progress.set_message(format!(", mean: {rolling_mean:.2}"));
         progress.inc(1);
     }