fix subtitle stream selection (#735)

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased]
 ### Fixed
 - Fix subtitles edge case with NVENC
+- Only select picture subtitles (text subtitles are not yet supported)
+  - Supported picture subtitles are `hdmv_pgs_subtitle` and `dvd_subtitle`
 
 ## [0.5.0-beta] - 2022-04-13
 ### Fixed

ErsatzTV.Core/FFmpeg/FFmpegStreamSelector.cs

@@ -99,7 +99,7 @@ public class FFmpegStreamSelector : IFFmpegStreamSelector
 
         var subtitleStreams = version.Streams
             .Filter(s => s.MediaStreamKind == MediaStreamKind.Subtitle)
-            // .Filter(s => s.Codec is "hdmv_pgs_subtitle" or "dvd_subtitle")
+            .Filter(s => s.Codec is "hdmv_pgs_subtitle" or "dvd_subtitle")
             .ToList();
 
         string language = (channel.PreferredSubtitleLanguageCode ?? string.Empty).ToLowerInvariant();