224 行
13 KiB
Crystal
224 行
13 KiB
Crystal
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class Video
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module HTTPParamConverter
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def self.from_rs(rs)
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HTTP::Params.parse(rs.read(String))
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end
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end
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add_mapping({
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id: String,
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info: {
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type: HTTP::Params,
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default: HTTP::Params.parse(""),
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converter: Video::HTTPParamConverter,
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},
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updated: Time,
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title: String,
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views: Int64,
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likes: Int32,
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dislikes: Int32,
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wilson_score: Float64,
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published: Time,
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description: String,
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language: String?,
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author: String,
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ucid: String,
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allowed_regions: Array(String),
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is_family_friendly: Bool,
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genre: String,
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})
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end
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def get_video(id, db, refresh = true)
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if db.query_one?("SELECT EXISTS (SELECT true FROM videos WHERE id = $1)", id, as: Bool)
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video = db.query_one("SELECT * FROM videos WHERE id = $1", id, as: Video)
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# If record was last updated over an hour ago, refresh (expire param in response lasts for 6 hours)
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if refresh && Time.now - video.updated > 1.hour
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begin
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video = fetch_video(id)
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video_array = video.to_a
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args = arg_array(video_array[1..-1], 2)
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db.exec("UPDATE videos SET (info,updated,title,views,likes,dislikes,wilson_score,\
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published,description,language,author,ucid, allowed_regions, is_family_friendly, genre)\
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= (#{args}) WHERE id = $1", video_array)
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rescue ex
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db.exec("DELETE FROM videos * WHERE id = $1", id)
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raise ex
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end
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end
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else
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video = fetch_video(id)
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video_array = video.to_a
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args = arg_array(video_array)
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db.exec("INSERT INTO videos VALUES (#{args}) ON CONFLICT (id) DO NOTHING", video_array)
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end
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return video
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end
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def fetch_video(id)
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html_channel = Channel(XML::Node).new
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info_channel = Channel(HTTP::Params).new
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spawn do
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client = make_client(YT_URL)
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html = client.get("/watch?v=#{id}&bpctr=#{Time.new.epoch + 2000}&disable_polymer=1")
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html = XML.parse_html(html.body)
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html_channel.send(html)
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end
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spawn do
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client = make_client(YT_URL)
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info = client.get("/get_video_info?video_id=#{id}&el=detailpage&ps=default&eurl=&gl=US&hl=en&disable_polymer=1")
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info = HTTP::Params.parse(info.body)
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if info["reason"]?
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info = client.get("/get_video_info?video_id=#{id}&ps=default&eurl=&gl=US&hl=en&disable_polymer=1")
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info = HTTP::Params.parse(info.body)
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end
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info_channel.send(info)
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end
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html = html_channel.receive
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info = info_channel.receive
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if info["reason"]?
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raise info["reason"]
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end
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title = info["title"]
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views = info["view_count"].to_i64
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author = info["author"]
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ucid = info["ucid"]
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likes = html.xpath_node(%q(//button[@title="I like this"]/span))
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likes = likes.try &.content.delete(",").try &.to_i
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likes ||= 0
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dislikes = html.xpath_node(%q(//button[@title="I dislike this"]/span))
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dislikes = dislikes.try &.content.delete(",").try &.to_i
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dislikes ||= 0
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description = html.xpath_node(%q(//p[@id="eow-description"]))
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description = description ? description.to_xml : ""
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wilson_score = ci_lower_bound(likes, likes + dislikes)
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published = html.xpath_node(%q(//meta[@itemprop="datePublished"])).not_nil!["content"]
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published = Time.parse(published, "%Y-%m-%d", Time::Location.local)
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allowed_regions = html.xpath_node(%q(//meta[@itemprop="regionsAllowed"])).not_nil!["content"].split(",")
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is_family_friendly = html.xpath_node(%q(//meta[@itemprop="isFamilyFriendly"])).not_nil!["content"] == "True"
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genre = html.xpath_node(%q(//meta[@itemprop="genre"])).not_nil!["content"]
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video = Video.new(id, info, Time.now, title, views, likes, dislikes, wilson_score, published, description,
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nil, author, ucid, allowed_regions, is_family_friendly, genre)
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return video
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end
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def itag_to_metadata(itag : String)
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# See https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/youtube.py#L380-#L476
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formats = {"5" => {"ext" => "flv", "width" => 400, "height" => 240, "acodec" => "mp3", "abr" => 64, "vcodec" => "h263"},
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"6" => {"ext" => "flv", "width" => 450, "height" => 270, "acodec" => "mp3", "abr" => 64, "vcodec" => "h263"},
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"13" => {"ext" => "3gp", "acodec" => "aac", "vcodec" => "mp4v"},
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"17" => {"ext" => "3gp", "width" => 176, "height" => 144, "acodec" => "aac", "abr" => 24, "vcodec" => "mp4v"},
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"18" => {"ext" => "mp4", "width" => 640, "height" => 360, "acodec" => "aac", "abr" => 96, "vcodec" => "h264"},
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"22" => {"ext" => "mp4", "width" => 1280, "height" => 720, "acodec" => "aac", "abr" => 192, "vcodec" => "h264"},
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"34" => {"ext" => "flv", "width" => 640, "height" => 360, "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"35" => {"ext" => "flv", "width" => 854, "height" => 480, "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"36" => {"ext" => "3gp", "width" => 320, "acodec" => "aac", "vcodec" => "mp4v"},
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"37" => {"ext" => "mp4", "width" => 1920, "height" => 1080, "acodec" => "aac", "abr" => 192, "vcodec" => "h264"},
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"38" => {"ext" => "mp4", "width" => 4096, "height" => 3072, "acodec" => "aac", "abr" => 192, "vcodec" => "h264"},
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"43" => {"ext" => "webm", "width" => 640, "height" => 360, "acodec" => "vorbis", "abr" => 128, "vcodec" => "vp8"},
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"44" => {"ext" => "webm", "width" => 854, "height" => 480, "acodec" => "vorbis", "abr" => 128, "vcodec" => "vp8"},
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"45" => {"ext" => "webm", "width" => 1280, "height" => 720, "acodec" => "vorbis", "abr" => 192, "vcodec" => "vp8"},
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"46" => {"ext" => "webm", "width" => 1920, "height" => 1080, "acodec" => "vorbis", "abr" => 192, "vcodec" => "vp8"},
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"59" => {"ext" => "mp4", "width" => 854, "height" => 480, "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"78" => {"ext" => "mp4", "width" => 854, "height" => 480, "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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# 3D videos
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"82" => {"ext" => "mp4", "height" => 360, "format" => "3D", "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"83" => {"ext" => "mp4", "height" => 480, "format" => "3D", "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"84" => {"ext" => "mp4", "height" => 720, "format" => "3D", "acodec" => "aac", "abr" => 192, "vcodec" => "h264"},
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"85" => {"ext" => "mp4", "height" => 1080, "format" => "3D", "acodec" => "aac", "abr" => 192, "vcodec" => "h264"},
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"100" => {"ext" => "webm", "height" => 360, "format" => "3D", "acodec" => "vorbis", "abr" => 128, "vcodec" => "vp8"},
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"101" => {"ext" => "webm", "height" => 480, "format" => "3D", "acodec" => "vorbis", "abr" => 192, "vcodec" => "vp8"},
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"102" => {"ext" => "webm", "height" => 720, "format" => "3D", "acodec" => "vorbis", "abr" => 192, "vcodec" => "vp8"},
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# Apple HTTP Live Streaming
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"91" => {"ext" => "mp4", "height" => 144, "format" => "HLS", "acodec" => "aac", "abr" => 48, "vcodec" => "h264"},
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"92" => {"ext" => "mp4", "height" => 240, "format" => "HLS", "acodec" => "aac", "abr" => 48, "vcodec" => "h264"},
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"93" => {"ext" => "mp4", "height" => 360, "format" => "HLS", "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"94" => {"ext" => "mp4", "height" => 480, "format" => "HLS", "acodec" => "aac", "abr" => 128, "vcodec" => "h264"},
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"95" => {"ext" => "mp4", "height" => 720, "format" => "HLS", "acodec" => "aac", "abr" => 256, "vcodec" => "h264"},
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"96" => {"ext" => "mp4", "height" => 1080, "format" => "HLS", "acodec" => "aac", "abr" => 256, "vcodec" => "h264"},
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"132" => {"ext" => "mp4", "height" => 240, "format" => "HLS", "acodec" => "aac", "abr" => 48, "vcodec" => "h264"},
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"151" => {"ext" => "mp4", "height" => 72, "format" => "HLS", "acodec" => "aac", "abr" => 24, "vcodec" => "h264"},
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# DASH mp4 video
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"133" => {"ext" => "mp4", "height" => 240, "format" => "DASH video", "vcodec" => "h264"},
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"134" => {"ext" => "mp4", "height" => 360, "format" => "DASH video", "vcodec" => "h264"},
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"135" => {"ext" => "mp4", "height" => 480, "format" => "DASH video", "vcodec" => "h264"},
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"136" => {"ext" => "mp4", "height" => 720, "format" => "DASH video", "vcodec" => "h264"},
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"137" => {"ext" => "mp4", "height" => 1080, "format" => "DASH video", "vcodec" => "h264"},
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"138" => {"ext" => "mp4", "format" => "DASH video", "vcodec" => "h264"}, # Height can vary (https=>//github.com/rg3/youtube-dl/issues/4559)
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"160" => {"ext" => "mp4", "height" => 144, "format" => "DASH video", "vcodec" => "h264"},
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"212" => {"ext" => "mp4", "height" => 480, "format" => "DASH video", "vcodec" => "h264"},
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"264" => {"ext" => "mp4", "height" => 1440, "format" => "DASH video", "vcodec" => "h264"},
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"298" => {"ext" => "mp4", "height" => 720, "format" => "DASH video", "vcodec" => "h264", "fps" => 60},
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"299" => {"ext" => "mp4", "height" => 1080, "format" => "DASH video", "vcodec" => "h264", "fps" => 60},
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"266" => {"ext" => "mp4", "height" => 2160, "format" => "DASH video", "vcodec" => "h264"},
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# Dash mp4 audio
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"139" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "aac", "abr" => 48, "container" => "m4a_dash"},
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"140" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "aac", "abr" => 128, "container" => "m4a_dash"},
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"141" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "aac", "abr" => 256, "container" => "m4a_dash"},
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"256" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "aac", "container" => "m4a_dash"},
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"258" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "aac", "container" => "m4a_dash"},
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"325" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "dtse", "container" => "m4a_dash"},
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"328" => {"ext" => "m4a", "format" => "DASH audio", "acodec" => "ec-3", "container" => "m4a_dash"},
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# Dash webm
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"167" => {"ext" => "webm", "height" => 360, "width" => 640, "format" => "DASH video", "container" => "webm", "vcodec" => "vp8"},
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"168" => {"ext" => "webm", "height" => 480, "width" => 854, "format" => "DASH video", "container" => "webm", "vcodec" => "vp8"},
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"169" => {"ext" => "webm", "height" => 720, "width" => 1280, "format" => "DASH video", "container" => "webm", "vcodec" => "vp8"},
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"170" => {"ext" => "webm", "height" => 1080, "width" => 1920, "format" => "DASH video", "container" => "webm", "vcodec" => "vp8"},
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"218" => {"ext" => "webm", "height" => 480, "width" => 854, "format" => "DASH video", "container" => "webm", "vcodec" => "vp8"},
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"219" => {"ext" => "webm", "height" => 480, "width" => 854, "format" => "DASH video", "container" => "webm", "vcodec" => "vp8"},
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"278" => {"ext" => "webm", "height" => 144, "format" => "DASH video", "container" => "webm", "vcodec" => "vp9"},
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"242" => {"ext" => "webm", "height" => 240, "format" => "DASH video", "vcodec" => "vp9"},
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"243" => {"ext" => "webm", "height" => 360, "format" => "DASH video", "vcodec" => "vp9"},
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"244" => {"ext" => "webm", "height" => 480, "format" => "DASH video", "vcodec" => "vp9"},
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"245" => {"ext" => "webm", "height" => 480, "format" => "DASH video", "vcodec" => "vp9"},
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"246" => {"ext" => "webm", "height" => 480, "format" => "DASH video", "vcodec" => "vp9"},
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"247" => {"ext" => "webm", "height" => 720, "format" => "DASH video", "vcodec" => "vp9"},
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"248" => {"ext" => "webm", "height" => 1080, "format" => "DASH video", "vcodec" => "vp9"},
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"271" => {"ext" => "webm", "height" => 1440, "format" => "DASH video", "vcodec" => "vp9"},
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# itag 272 videos are either 3840x2160 (e.g. RtoitU2A-3E) or 7680x4320 (sLprVF6d7Ug)
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"272" => {"ext" => "webm", "height" => 2160, "format" => "DASH video", "vcodec" => "vp9"},
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"302" => {"ext" => "webm", "height" => 720, "format" => "DASH video", "vcodec" => "vp9", "fps" => 60},
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"303" => {"ext" => "webm", "height" => 1080, "format" => "DASH video", "vcodec" => "vp9", "fps" => 60},
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"308" => {"ext" => "webm", "height" => 1440, "format" => "DASH video", "vcodec" => "vp9", "fps" => 60},
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"313" => {"ext" => "webm", "height" => 2160, "format" => "DASH video", "vcodec" => "vp9"},
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"315" => {"ext" => "webm", "height" => 2160, "format" => "DASH video", "vcodec" => "vp9", "fps" => 60},
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# Dash webm audio
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"171" => {"ext" => "webm", "acodec" => "vorbis", "format" => "DASH audio", "abr" => 128},
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"172" => {"ext" => "webm", "acodec" => "vorbis", "format" => "DASH audio", "abr" => 256},
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# Dash webm audio with opus inside
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"249" => {"ext" => "webm", "format" => "DASH audio", "acodec" => "opus", "abr" => 50},
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"250" => {"ext" => "webm", "format" => "DASH audio", "acodec" => "opus", "abr" => 70},
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"251" => {"ext" => "webm", "format" => "DASH audio", "acodec" => "opus", "abr" => 160},
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}
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return formats[itag]
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end
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