Display ffmpeg output errors

server/helpers/ffmpeg-utils.ts

@@ -102,7 +102,11 @@ function transcode (options: TranscodeOptions) {
       command = command.size(size)
     }
 
-    command.on('error', rej)
+    command
+      .on('error', (err, stdout, stderr) => {
+        logger.error('Error in transcoding job.', { stdout, stderr })
+        return rej(err)
+      })
       .on('end', res)
       .run()
   })