diff --git a/services/worker/src/workers/conform.js b/services/worker/src/workers/conform.js
index da2dfc9..2c4e8c4 100644
--- a/services/worker/src/workers/conform.js
+++ b/services/worker/src/workers/conform.js
@@ -238,7 +238,10 @@ export const conformWorker = async (job) => {
                `scale=1920:1080:force_original_aspect_ratio=decrease,` +
                `pad=1920:1080:(ow-iw)/2:(oh-ih)/2,` +
                `setsar=1,format=yuv420p`,
-        '-af', 'aresample=48000:ocl=stereo',
+        // ffmpeg 8.x dropped the `ocl=` shortcut on aresample. Use aformat
+        // for the channel layout assertion + auto-conversion; aresample
+        // just sets the rate.
+        '-af', 'aresample=48000,aformat=channel_layouts=stereo:sample_fmts=fltp',
         '-c:v', 'libx264', '-preset', 'ultrafast', '-crf', '18',
         '-pix_fmt', 'yuv420p',
         '-c:a', 'aac', '-b:a', '320k', '-ar', '48000',