Add webm to dash manifests

src/invidious.cr

@@ -4124,16 +4124,17 @@ get "/api/manifest/dash/id/:id" do |env|
     end
   end
 
-  audio_streams = video.audio_streams(adaptive_fmts).select { |stream| stream["type"].starts_with? "audio/mp4" }
-  video_streams = video.video_streams(adaptive_fmts).select { |stream| stream["type"].starts_with? "video/mp4" }.uniq { |stream| stream["size"] }
+  audio_streams = video.audio_streams(adaptive_fmts)
+  video_streams = video.video_streams(adaptive_fmts)
 
   manifest = XML.build(indent: "  ", encoding: "UTF-8") do |xml|
     xml.element("MPD", "xmlns": "urn:mpeg:dash:schema:mpd:2011",
       "profiles": "urn:mpeg:dash:profile:isoff-live:2011", minBufferTime: "PT1.5S", type: "static",
       mediaPresentationDuration: "PT#{video.info["length_seconds"]}S") do
       xml.element("Period") do
-        xml.element("AdaptationSet", mimeType: "audio/mp4", startWithSAP: 1, subsegmentAlignment: true) do
-          audio_streams.each do |fmt|
+        {"audio/mp4", "audio/webm"}.each do |mime_type|
+          xml.element("AdaptationSet", mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true) do
+            audio_streams.select { |stream| stream["type"].starts_with? mime_type }.each do |fmt|
               codecs = fmt["type"].split("codecs=")[1].strip('"')
               bandwidth = fmt["bitrate"]
               itag = fmt["itag"]
@@ -4149,10 +4150,12 @@ get "/api/manifest/dash/id/:id" do |env|
               end
             end
           end
+        end
 
-        xml.element("AdaptationSet", mimeType: "video/mp4", startWithSAP: 1, subsegmentAlignment: true,
+        {"video/mp4", "video/webm"}.each do |mime_type|
+          xml.element("AdaptationSet", mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true,
             scanType: "progressive") do
-          video_streams.each do |fmt|
+            video_streams.select { |stream| stream["type"].starts_with? mime_type }.each do |fmt|
               codecs = fmt["type"].split("codecs=")[1].strip('"')
               bandwidth = fmt["bitrate"]
               itag = fmt["itag"]
@@ -4172,6 +4175,7 @@ get "/api/manifest/dash/id/:id" do |env|
         end
       end
     end
+  end
 
   manifest = manifest.gsub(%(<?xml version="1.0" encoding="UTF-8U"?>), %(<?xml version="1.0" encoding="UTF-8"?>))
   manifest = manifest.gsub(%(<?xml version="1.0" encoding="UTF-8V"?>), %(<?xml version="1.0" encoding="UTF-8"?>))