diff --git a/src/utils/parseProgress.js b/src/utils/parseProgress.js
deleted file mode 100644
index b401253..0000000
--- a/src/utils/parseProgress.js
+++ /dev/null
@@ -1,45 +0,0 @@
-let duration = 0;
-let frames = 0;
-let readFrames = false;
-let ratio = 0;
-
-const ts2sec = (ts) => {
-  const [h, m, s] = ts.split(':');
-  return (parseFloat(h) * 60 * 60) + (parseFloat(m) * 60) + parseFloat(s);
-};
-
-module.exports = (message, progress) => {
-  if (typeof message === 'string') {
-    if (message.startsWith('  Duration')) {
-      const ts = message.split(', ')[0].split(': ')[1];
-      const d = ts2sec(ts);
-      progress({ duration: d, ratio });
-      if (duration === 0 || duration > d) {
-        duration = d;
-        readFrames = true;
-      }
-    } else if (readFrames && message.startsWith('    Stream')) {
-      const match = message.match(/([\d.]+) fps/);
-      if (match) {
-        const fps = parseFloat(match[1]);
-        frames = duration * fps;
-      } else {
-        frames = 0;
-      }
-      readFrames = false;
-    } else if (message.startsWith('frame') || message.startsWith('size')) {
-      const ts = message.split('time=')[1].split(' ')[0];
-      const t = ts2sec(ts);
-      const f = parseFloat(message.match(/frame=\s*(\d+)/)[1]);
-      if (frames) {
-        ratio = Math.min(f / frames, 1);
-      } else {
-        ratio = t / duration;
-      }
-      progress({ ratio, time: t });
-    } else if (message.startsWith('video:')) {
-      progress({ ratio: 1 });
-      duration = 0;
-    }
-  }
-};