diff --git a/registry/lib/plugins/video/download/wasm-output/ffmpeg.ts b/registry/lib/plugins/video/download/wasm-output/ffmpeg.ts
index 1eec43c85f..5f991c0ba1 100644
--- a/registry/lib/plugins/video/download/wasm-output/ffmpeg.ts
+++ b/registry/lib/plugins/video/download/wasm-output/ffmpeg.ts
@@ -7,8 +7,6 @@ Modified 2023 WakelessSloth56
 
 /* eslint-disable @typescript-eslint/naming-convention */
 
-export const VERSION = '0.12.4'
-
 const messageId = (() => {
   let messageID = 0
   return () => messageID++
@@ -46,7 +44,8 @@ export class FFmpeg {
             this.#rejects[id](data)
             break
           default:
-            throw new Error('Unknown FFmpeg message')
+            // https://github.com/the1812/Bilibili-Evolved/pull/4521#discussion_r1402041877
+            break
         }
         delete this.#resolves[id]
         delete this.#rejects[id]
diff --git a/registry/lib/plugins/video/download/wasm-output/handler.ts b/registry/lib/plugins/video/download/wasm-output/handler.ts
index 8e9473a6f1..eec527846e 100644
--- a/registry/lib/plugins/video/download/wasm-output/handler.ts
+++ b/registry/lib/plugins/video/download/wasm-output/handler.ts
@@ -1,32 +1,25 @@
-import { CdnTypes } from '@/core/cdn-types'
 import { DownloadPackage } from '@/core/download'
 import { meta } from '@/core/meta'
 import { Toast } from '@/core/toast'
-import { FFmpeg, VERSION } from './ffmpeg'
-import { httpget, toBlobUrl, toastProgress } from './utils'
+import { FFmpeg } from './ffmpeg'
+import { httpGet, toBlobUrl, toastProgress } from './utils'
 
 const ffmpeg = new FFmpeg()
 
-function cdnUrl(p: string, file: string) {
-  return `https://${
-    meta.compilationInfo.allCdns[CdnTypes.jsDelivr].host
-  }/npm/@ffmpeg/${p}@${VERSION}/dist/umd/${file}`
-}
-
 async function load(toast: Toast) {
   await ffmpeg.load({
     workerLoadURL: await toBlobUrl(
-      cdnUrl('ffmpeg', '814.ffmpeg.js'),
+      meta.compilationInfo.altCdn.library.ffmpeg.worker,
       'text/javascript',
       toastProgress(toast, '正在加载 FFmpeg Worker'),
     ),
     coreURL: await toBlobUrl(
-      cdnUrl('core', 'ffmpeg-core.js'),
+      meta.compilationInfo.altCdn.library.ffmpeg.core,
       'text/javascript',
       toastProgress(toast, '正在加载 FFmpeg Core'),
     ),
     wasmURL: await toBlobUrl(
-      cdnUrl('core', 'ffmpeg-core.wasm'),
+      meta.compilationInfo.altCdn.library.ffmpeg.wasm,
       'application/wasm',
       toastProgress(toast, '正在加载 FFmpeg WASM'),
     ),
@@ -37,8 +30,8 @@ export async function run(name: string, videoUrl: string, audioUrl: string, toas
     await load(toast)
   }
 
-  ffmpeg.writeFile('video', await httpget(videoUrl, toastProgress(toast, '正在下载视频流')))
-  ffmpeg.writeFile('audio', await httpget(audioUrl, toastProgress(toast, '正在下载音频流')))
+  ffmpeg.writeFile('video', await httpGet(videoUrl, toastProgress(toast, '正在下载视频流')))
+  ffmpeg.writeFile('audio', await httpGet(audioUrl, toastProgress(toast, '正在下载音频流')))
 
   toast.message = '混流中……'
 
diff --git a/registry/lib/plugins/video/download/wasm-output/utils.ts b/registry/lib/plugins/video/download/wasm-output/utils.ts
index c957fb493b..ae4552e96a 100644
--- a/registry/lib/plugins/video/download/wasm-output/utils.ts
+++ b/registry/lib/plugins/video/download/wasm-output/utils.ts
@@ -11,14 +11,18 @@ export function toastProgress(toast: Toast, message: string): OnProgress {
   }
 }
 
-export async function httpget(url: string, onprogress: OnProgress) {
+export async function httpGet(url: string, onprogress: OnProgress) {
   const response = await fetch(url)
   if (!response.ok) {
     throw new Error(`${response.status} ${response.statusText}`)
   }
 
   const reader = response.body.getReader()
-  const length = parseInt(response.headers.get('Content-Length') || '0')
+
+  // https://github.com/the1812/Bilibili-Evolved/pull/4521#discussion_r1402127375
+  const length = response.headers.get('Content-Encoding')
+    ? -1
+    : parseInt(response.headers.get('Content-Length'))
 
   let received = 0
   const chunks = []
@@ -44,7 +48,7 @@ export async function httpget(url: string, onprogress: OnProgress) {
 }
 
 export async function toBlobUrl(url: string, mimeType: string, onprogress: OnProgress) {
-  const buffer = await httpget(url, onprogress)
+  const buffer = await httpGet(url, onprogress)
   const blob = new Blob([buffer], { type: mimeType })
   return URL.createObjectURL(blob)
 }
diff --git a/webpack/cdn/github.ts b/webpack/cdn/github.ts
index 66def909dc..05872c69fe 100644
--- a/webpack/cdn/github.ts
+++ b/webpack/cdn/github.ts
@@ -1,3 +1,4 @@
+import { jsDelivr } from './jsdelivr'
 import { CdnConfig } from './types'
 
 const owner = 'the1812'
@@ -15,6 +16,8 @@ export const github: CdnConfig = {
     sortable: `https://${host}/SortableJS/Sortable/1.14.0/Sortable.min.js`,
     mdi: `https://${owner}.github.io/Bilibili-Evolved/static/mdi/mdi.css`,
     streamsaver: `https://${host}/jimmywarting/StreamSaver.js/2.0.6/StreamSaver.js`,
+    // https://github.com/the1812/Bilibili-Evolved/pull/4521#discussion_r1402084486
+    ffmpeg: jsDelivr.library.ffmpeg,
   },
   smallLogo: `https://${host}/${owner}/Bilibili-Evolved/preview/images/logo-small.png`,
   logo: `https://${host}/${owner}/Bilibili-Evolved/preview/images/logo.png`,
diff --git a/webpack/cdn/jsdelivr.ts b/webpack/cdn/jsdelivr.ts
index ec2474681d..3765b97745 100644
--- a/webpack/cdn/jsdelivr.ts
+++ b/webpack/cdn/jsdelivr.ts
@@ -15,6 +15,11 @@ export const jsDelivr: CdnConfig = {
     sortable: `https://${host}/npm/sortablejs@1.14.0/Sortable.min.js`,
     mdi: `https://${host}/gh/${owner}/Bilibili-Evolved@master/docs/static/mdi/mdi.css`,
     streamsaver: `https://${host}/npm/streamsaver@2.0.6/StreamSaver.min.js`,
+    ffmpeg: {
+      worker: `https://${host}/npm/@ffmpeg/ffmpeg@0.12.4/dist/umd/814.ffmpeg.js`,
+      core: `https://${host}/npm/@ffmpeg/core@0.12.4/dist/umd/ffmpeg-core.js`,
+      wasm: `https://${host}/npm/@ffmpeg/core@0.12.4/dist/umd/ffmpeg-core.wasm`,
+    },
   },
   smallLogo: `https://${host}/gh/${owner}/Bilibili-Evolved@preview/images/logo-small.png`,
   logo: `https://${host}/gh/${owner}/Bilibili-Evolved@preview/images/logo.png`,
diff --git a/webpack/cdn/types.ts b/webpack/cdn/types.ts
index b23fc639f7..841d97d4df 100644
--- a/webpack/cdn/types.ts
+++ b/webpack/cdn/types.ts
@@ -11,6 +11,11 @@ export interface CdnConfig {
     sortable: string
     mdi: string
     streamsaver: string
+    ffmpeg: {
+      worker: string
+      core: string
+      wasm: string
+    }
   }
   smallLogo: string
   logo: string