From cedf96d8ca40ada435dd985f64307261b5c4fcc0 Mon Sep 17 00:00:00 2001
From: Rob Walch <robwalch@users.noreply.github.com>
Date: Wed, 3 Jul 2024 14:33:36 -0700
Subject: [PATCH] Make sure `reduceMaxBufferLength` can reach a min length of
 fragment duration resulting in buffer full error (#6539)

Resolves #6535
---
 src/controller/base-stream-controller.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/controller/base-stream-controller.ts b/src/controller/base-stream-controller.ts
index 4d366db2d46..dfbc8e2b2c4 100644
--- a/src/controller/base-stream-controller.ts
+++ b/src/controller/base-stream-controller.ts
@@ -1029,12 +1029,13 @@ export default class BaseStreamController
   protected reduceMaxBufferLength(threshold: number, fragDuration: number) {
     const config = this.config;
     const minLength = Math.max(
-      Math.min(threshold, config.maxBufferLength),
+      Math.min(threshold - fragDuration, config.maxBufferLength),
       fragDuration,
     );
     const reducedLength = Math.max(
       threshold - fragDuration * 3,
       config.maxMaxBufferLength / 2,
+      minLength,
     );
     if (reducedLength >= minLength) {
       // reduce max buffer length as it might be too high. we do this to avoid loop flushing ...