diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index 7f75c1f0b0..8aeec3f3d6 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -1305,7 +1305,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                     arg.Append(canvasArgs);
                 }
 
-                arg.Append(" -i file:\"").Append(subtitlePath).Append('\"');
+                arg.Append(" -i file:\"").Append(subtitlePath.Replace("\"", "\\\"", StringComparison.Ordinal)).Append('\"');
             }
 
             if (state.AudioStream is not null && state.AudioStream.IsExternal)
@@ -1317,7 +1317,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                     arg.Append(' ').Append(seekAudioParam);
                 }
 
-                arg.Append(" -i \"").Append(state.AudioStream.Path).Append('"');
+                arg.Append(" -i \"").Append(state.AudioStream.Path.Replace("\"", "\\\"", StringComparison.Ordinal)).Append('"');
             }
 
             // Disable auto inserted SW scaler for HW decoders in case of changed resolution.
diff --git a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
index 6b88439596..cb220370d1 100644
--- a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
@@ -19,6 +19,7 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.MediaEncoding;
+using MediaBrowser.MediaEncoding.Encoder;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
@@ -372,7 +373,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles
                     CreateNoWindow = true,
                     UseShellExecute = false,
                     FileName = _mediaEncoder.EncoderPath,
-                    Arguments = string.Format(CultureInfo.InvariantCulture, "{0} -i \"{1}\" -c:s srt \"{2}\"", encodingParam, inputPath, outputPath),
+                    Arguments = string.Format(CultureInfo.InvariantCulture, "{0} -i \"{1}\" -c:s srt \"{2}\"", encodingParam, EncodingUtils.NormalizePath(inputPath), EncodingUtils.NormalizePath(outputPath)),
                     WindowStyle = ProcessWindowStyle.Hidden,
                     ErrorDialog = false
                 },