[BACKEND] Fix Plex MP4 (#586)

* Fix Plex MP4

No WebM, Best quality, No AV1 either

* Fixed because I am idiot

Forcing Plex to download only MP4 and 1080P. More efficient then downloading Webm and converting. Plex does not direct Play AV1 currently anyway.

* Plex Update

Default will get best video in H265 or H264, if neither are available, it will get next best video. All MP4, no limit on resolution.

Plex_tv_show_av1 will allow for absolute best possible resolution in any codec as long as its MP4, including Av1 which is not currently supported in Plex.

Without AV1 is considered default, for maximum compatibility at this time.

* EBUATK

Incorrect setting on Av1, fixed.

* Removed Av1 Preset

---------

Co-authored-by: catduckgnaf <128985786+cellardoor452@users.noreply.github.com>

src/ytdl_sub/prebuilt_presets/tv_show/tv_show.yaml

@@ -1,18 +1,17 @@
 presets:
 
-  _plex_tv_show:
+
+  _plex_tv_show: # Default Highest Resolution, No AV1, which is not currently supported by plex
     preset:
       - "_plex_base"
       - "_episode_base"
       - "_episode_video_tags"
     ytdl_options:
-      format: "bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best"
+      format: "(bv*[ext=mp4][vcodec~='^((he|a)vc|h26[45])']+ba[ext=m4a]) / (bv[ext=mp4]*+ba[ext=m4a]/b)"
     overrides:
       tv_show_poster_file_name: "poster.jpg"
       tv_show_fanart_file_name: "fanart.jpg"
       season_poster_file_name: "Season {season_number_padded}/Season{season_number_padded}.jpg"
-    file_convert:  # Plex currently does not support webm
-      convert_to: "mp4"
 
   _jellyfin_tv_show:
     preset: