diff --git a/Dockerfile b/Dockerfile
index 04985a7..7a6145b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,10 @@
-FROM node:lts-alpine
+FROM linuxserver/ffmpeg:latest
 
-RUN apk add ffmpeg
+RUN apt-get -y update  && \
+    apt-get -y --no-install-recommends install nodejs npm && \
+    rm -rf /var/lib/apt/lists/* && \
+    npm install -g corepack && \
+    corepack enable
 
 WORKDIR /app
 
diff --git a/src/composers/TorrentsComposer.ts b/src/composers/TorrentsComposer.ts
index e6b2d9c..d8e32b8 100644
--- a/src/composers/TorrentsComposer.ts
+++ b/src/composers/TorrentsComposer.ts
@@ -345,7 +345,7 @@ export class TorrentsComposer<
           const tmpFile = tmpNameSync({ postfix: '.mp4' });
 
           ffmpeg(filePath)
-            .outputOptions('-c:a', 'aac')
+            .outputOptions('-c:a', 'libfdk_aac')
             .outputOptions('-c:v', 'libx264')
             .outputOptions('-b:a', `${aBitrate}k`)
             .outputOptions('-b:v', `${vBitrate}k`)