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Fix DASH manifest to be more similar to YT's

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This commit is contained in:
Omar Roth 2018-03-12 22:16:38 -05:00
parent 8fb97a4511
commit 1a6c28735c
1 changed files with 46 additions and 29 deletions
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75
src/invidious.cr
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@ -352,46 +352,62 @@ get "/api/manifest/dash/id/:id" do |env|
halt env, status_code: 403
end
manifest = XML.build(indent: " ") do |xml|
xml.element("MPD", xmlns: "urn:mpeg:dash:schema:mpd:2011", profiles: "urn:mpeg:dash:profile:full:2011",
mediaPresentationDuration: "PT#{video.info["length_seconds"]}S", minBufferTime: "PT2S", type: "static") do
host = URI.parse(adaptive_fmts[0]["url"]).host.to_s
signature = false
if adaptive_fmts[0]? && adaptive_fmts[0]["s"]?
signature = true
end
xml.element("BaseURL") { xml.text "https://#{host}" }
xml.element("Period", id: "0") do
if signature
adaptive_fmts.each do |fmt|
fmt["url"] += "&signature=" + decrypt_signature(fmt["s"])
end
end
video_streams = adaptive_fmts.compact_map { |s| s["type"].starts_with?("video/mp4") ? s : nil }
audio_streams = adaptive_fmts.compact_map { |s| s["type"].starts_with?("audio/mp4") ? s : nil }
audio_streams.sort_by! { |s| s["bitrate"].to_i }.reverse!
audio_streams.each do |fmt|
fmt["bitrate"] = (fmt["bitrate"].to_f64/1000).to_i.to_s
end
manifest = XML.build(indent: " ", encoding: "UTF-8") do |xml|
xml.element("MPD", "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", xmlns: "urn:mpeg:dash:schema:mpd:2011",
profiles: "urn:mpeg:dash:profile:full:2011", mediaPresentationDuration: "PT#{video.info["length_seconds"]}S",
minBufferTime: "PT2S", type: "static") do
xml.element("Period") do
xml.element("AdaptationSet", id: 0, mimeType: "audio/mp4", subsegmentAlignment: true) do
xml.element("Role", schemeIdUri: "urn:mpeg:DASH:role:2011", value: "main")
video_streams.each do |fmt|
mimetype, codecs = fmt["type"].split(";")
codecs = codecs[9..-2]
fmt_type = mimetype.split("/")[0]
fmt_id = fmt["itag"]
bandwidth = fmt["bitrate"]
itag = fmt["itag"]
url = URI.unescape(fmt["url"])
url = fmt["url"]
if fmt["s"]?
url += "&signature="
url += decrypt_signature(fmt["s"])
end
url = URI.parse(url)
url = url.path.not_nil! + "?" + url.query.not_nil!
if fmt_type == "video"
width, height = fmt["size"].split("x")
framerate = fmt["fps"]
xml.element("AdaptationSet", contentType: "video", width: width,
height: height, frameRate: framerate, subsegmentAlignment: true, id: fmt_id) do
xml.element("Representation", id: fmt_id, bandwidth: bandwidth, codecs: codecs, mimeType: mimetype) do
xml.element("BaseURL") { xml.text url }
xml.element("Representation", id: fmt["itag"], codecs: codecs, bandwidth: bandwidth) do
xml.element("BaseURL") { xml.cdata url }
xml.element("SegmentBase", indexRange: fmt["init"]) do
xml.element("Initialization", range: fmt["index"])
end
end
end
else
xml.element("AdaptationSet", contentType: "audio", subsegmentAlignment: true, id: fmt_id) do
xml.element("Representation", id: fmt_id, bandwidth: bandwidth, codecs: codecs, mimeType: mimetype) do
xml.element("BaseURL") { xml.text url }
end
xml.element("AdaptationSet", id: 1, mimeType: "video/mp4", subsegmentAlignment: true) do
xml.element("Role", schemeIdUri: "urn:mpeg:DASH:role:2011", value: "main")
video_streams.each do |fmt|
mimetype, codecs = fmt["type"].split(";")
codecs = codecs[9..-2]
fmt_type = mimetype.split("/")[0]
bandwidth = fmt["bitrate"]
itag = fmt["itag"]
url = URI.unescape(fmt["url"])
height, width = fmt["size"].split("x")
xml.element("Representation", id: itag, codecs: codecs, width: width, height: height, bandwidth: bandwidth, frameRate: fmt["fps"]) do
xml.element("BaseURL") { xml.cdata url }
xml.element("SegmentBase", indexRange: fmt["init"]) do
xml.element("Initialization", range: fmt["index"])
end
@ -401,8 +417,9 @@ 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"?>))
manifest
end