From 8f81868b9c747b6abf863fe30fc9d16dbe8e2e15 Mon Sep 17 00:00:00 2001
From: Yury Semikhatsky <yurys@chromium.org>
Date: Tue, 8 Sep 2020 15:39:18 -0700
Subject: [PATCH] fix(screencast): tune ffmpeg params for better quality
 (#3798)

---
 src/server/chromium/videoRecorder.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server/chromium/videoRecorder.ts b/src/server/chromium/videoRecorder.ts
index 4c934c3394..f3c9958cfa 100644
--- a/src/server/chromium/videoRecorder.ts
+++ b/src/server/chromium/videoRecorder.ts
@@ -53,7 +53,7 @@ export class VideoRecorder {
     assert(!this._isRunning());
     const w = options.width;
     const h = options.height;
-    const args = `-loglevel error -f image2pipe -c:v mjpeg -i - -y -an -r ${fps} -c:v vp8 -vf pad=${w}:${h}:0:0:gray,crop=${w}:${h}:0:0`.split(' ');
+    const args = `-loglevel error -f image2pipe -c:v mjpeg -i - -y -an -r ${fps} -c:v vp8 -qmin 0 -qmax 50 -crf 8 -vf pad=${w}:${h}:0:0:gray,crop=${w}:${h}:0:0`.split(' ');
     args.push(options.outputFile);
     const progress = this._progress;