diff --git a/apps/browser/transcode.html b/apps/browser/transcode.html
index d06cad8..1b2ca23 100644
--- a/apps/browser/transcode.html
+++ b/apps/browser/transcode.html
@@ -21,8 +21,8 @@
           ffmpeg.on("log", ({ message }) => {
             console.log(message);
           })
-          ffmpeg.on("progress", ({ progress }) => {
-            message.innerHTML = `${progress * 100} %`;
+          ffmpeg.on("progress", ({ progress, elapsed }) => {
+            message.innerHTML = `${progress * 100} %, elapsed: ${elapsed / 1000000} s`;
           });
           await ffmpeg.load({
             coreURL: "/packages/core/dist/umd/ffmpeg-core.js",
diff --git a/packages/ffmpeg/src/types.ts b/packages/ffmpeg/src/types.ts
index 566c8a2..3618901 100644
--- a/packages/ffmpeg/src/types.ts
+++ b/packages/ffmpeg/src/types.ts
@@ -119,6 +119,7 @@ export interface LogEvent {
 
 export interface ProgressEvent {
   progress: number;
+  elapsed: number;
 }
 
 export type ExitCode = number;
diff --git a/packages/ffmpeg/src/worker.ts b/packages/ffmpeg/src/worker.ts
index 0df7247..a8c8eb2 100644
--- a/packages/ffmpeg/src/worker.ts
+++ b/packages/ffmpeg/src/worker.ts
@@ -72,8 +72,11 @@ const load = async ({
   ffmpeg.setLogger((data) =>
     self.postMessage({ type: FFMessageType.LOG, data })
   );
-  ffmpeg.setProgress((progress: number) =>
-    self.postMessage({ type: FFMessageType.PROGRESS, data: { progress } })
+  ffmpeg.setProgress((data) =>
+    self.postMessage({
+      type: FFMessageType.PROGRESS,
+      data,
+    })
   );
   return first;
 };
diff --git a/packages/types/types/index.d.ts b/packages/types/types/index.d.ts
index 09b832d..9cd8570 100644
--- a/packages/types/types/index.d.ts
+++ b/packages/types/types/index.d.ts
@@ -58,7 +58,7 @@ export interface FFmpegCoreModule {
   reset: () => void;
   setLogger: (logger: (log: Log) => void) => void;
   setTimeout: (timeout: number) => void;
-  setProgress: (handler: (progress: number) => void) => void;
+  setProgress: (handler: (progress: number, elapsed: number) => void) => void;
 
   locateFile: (path: string, prefix: string) => string;
 }
diff --git a/src/bind/ffmpeg/bind.js b/src/bind/ffmpeg/bind.js
index 68a5819..b512b5b 100644
--- a/src/bind/ffmpeg/bind.js
+++ b/src/bind/ffmpeg/bind.js
@@ -74,8 +74,8 @@ function setProgress(handler) {
   Module["progress"] = handler;
 }
 
-function receiveProgress(progress) {
-  Module["progress"](progress);
+function receiveProgress(progress, elapsed) {
+  Module["progress"]({ progress, elapsed });
 }
 
 function reset() {
diff --git a/src/fftools/ffmpeg.c b/src/fftools/ffmpeg.c
index 3d296a5..e4f3ff8 100644
--- a/src/fftools/ffmpeg.c
+++ b/src/fftools/ffmpeg.c
@@ -1505,8 +1505,8 @@ static void print_final_stats(int64_t total_size)
     }
 }
 
-EM_JS(void, send_progress, (double progress), {
-    Module.receiveProgress(progress);
+EM_JS(void, send_progress, (double progress, double elapsed), {
+    Module.receiveProgress(progress, elapsed);
 });
 
 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
@@ -1650,7 +1650,7 @@ static void print_report(int is_last_report, int64_t timer_start, int64_t cur_ti
         duration = file_duration;
       }
     }
-    send_progress((double)pts_abs / (double)duration);
+    send_progress((double)pts_abs / (double)duration, (double)pts_abs);
 
     secs = FFABS(pts) / AV_TIME_BASE;
     us = FFABS(pts) % AV_TIME_BASE;
@@ -1736,7 +1736,7 @@ static void print_report(int is_last_report, int64_t timer_start, int64_t cur_ti
 
     if (is_last_report) {
       // Make sure the progress is ended with 1.
-      if (pts_abs != duration) send_progress(1);
+      if (pts_abs != duration) send_progress(1, (double)pts_abs);
       print_final_stats(total_size);
     }
 }
diff --git a/tests/ffmpeg-core.test.js b/tests/ffmpeg-core.test.js
index efb4708..158391e 100644
--- a/tests/ffmpeg-core.test.js
+++ b/tests/ffmpeg-core.test.js
@@ -92,7 +92,7 @@ describe(genName("setProgress()"), () => {
 
   it("should handle progress", () => {
     let progress = 0;
-    core.setProgress((_progress) => (progress = _progress));
+    core.setProgress(({ progress: _progress }) => (progress = _progress));
     expect(core.exec("-i", "video.mp4", "video.avi")).to.equal(0);
     expect(progress).to.equal(1);
     core.FS.unlink("video.avi");