From 56a4f3fdd824d725e1c5f3128480af177ccc4fcb Mon Sep 17 00:00:00 2001
From: vexorian <vexorian@gmail.com>
Date: Tue, 28 Nov 2023 23:03:45 -0400
Subject: [PATCH] Fix 'blocky' playback with mpeg2video. Add preset for
 libx264, might be unnecessary/wrong

---
 src/ffmpeg.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ffmpeg.js b/src/ffmpeg.js
index 779e379..c503279 100644
--- a/src/ffmpeg.js
+++ b/src/ffmpeg.js
@@ -495,9 +495,17 @@ class FFMPEG extends events.EventEmitter {
             if ( transcodeVideo && (this.audioOnly !== true) ) {
                 // add the video encoder flags
                 ffmpegArgs.push(
+                            '-crf', '22',
                             `-maxrate:v`, `${this.opts.videoBitrate}k`,
                             `-bufsize:v`, `${this.opts.videoBufSize}k`
                 );
+                if (this.opts.videoEncoder.toLowerCase() === "mpeg2video") {
+                    // This makes message "impossible bitrate constraints, this will fail" appear but nothing actually fails and it really looks like b:v is the only way to make the video look good when using mpeg2video
+                    ffmpegArgs.push(
+                        `-qscale:v`, `1`,
+                        '-b:v', `${this.opts.videoBitrate}k`
+                    );
+                }
             }
             if ( transcodeAudio ) {
                 // add the audio encoder flags