diff --git a/packages/avplayer/src/subtitle/SubtitleRender.ts b/packages/avplayer/src/subtitle/SubtitleRender.ts
index e3af710..f649d95 100644
--- a/packages/avplayer/src/subtitle/SubtitleRender.ts
+++ b/packages/avplayer/src/subtitle/SubtitleRender.ts
@@ -42,3 +42,5 @@ import {
   avRescaleQ2,
-  destroyAVPacket
+  destroyAVPacket,
+  unserializeAVPacket,
+  type AVPacketSerialize
 } from '@libmedia/avutil'
@@ -375,3 +377,7 @@ export default class SubtitleRender {
     const currentPort = this.currentPort
-    const avpacket = await this.leftPorts.get(this.currentPort).request<pointer<AVPacketRef>>('pull')
+    const packet = await this.leftPorts.get(this.currentPort).request<pointer<AVPacketRef> | AVPacketSerialize>('pull')
+    // Non-shared worker packets must be reconstructed in the receiving pool.
+    const avpacket: pointer<AVPacketRef> = typeof packet === 'object' && packet !== null
+      ? reinterpret_cast<pointer<AVPacketRef>>(unserializeAVPacket(packet, this.avpacketPool ? this.avpacketPool.alloc() : nullptr))
+      : packet as pointer<AVPacketRef>
     if (avpacket === IOError.END) {