要获得直接指向YouTube视频的链接，我请求获取get_video_info文件，在该文件中，该链接为该文件，但我必须对其进行解析，我找到了通过PHP对其进行解析的解决方案，但我想直接从中进行解析我的应用程序
我是这样从我的代码中获取数据的：
let youtubeContentID = "sZz7tiToK1U"
if let infoURL = URL(string:"https://www.youtube.com/get_video_info?video_id=\(youtubeContentID)") {
let request = URLRequest(url: infoURL)
let session = URLSession(configuration: .default)
let task = session.dataTask(with: request, completionHandler: { (data, response, error) -> Void in
if let error = error {
print(error)
} else if let data = data, let result = NSString(data: data, encoding: String.Encoding.utf8.rawValue) {
print(result)
}
})
task.resume()
}
}
我得到的数据带有许多这样的Ascii符号：
c = WEB＆vss_host = s.youtube.com＆innertube_api_version = v1＆xhr_apiary_host = youtubei.youtube.com＆apiary_host_firstparty =＆status = ok＆t = 1＆enabled_engage_types = 3％2C6％2C4％2C5％2C17％2C1_ssl = 1 %%＆video ％253D％2522vp9％2522％26eotf％3Dbt709％26projection_type％3D1％26lmt％3D1550114115045036％26bitrate％3D16962786％26size％3D3840x2160％26index％3D221-1771％26quality_label％3D2160p％26xtags％3D％26F％ --- sn-nuj-wxqek.googlevideo.com％252Fvideoplayback％253Fexpire％253D1551500605％2526usequic％253Dno％2526gir％253Dyes％2526mime％253Dvideo％25252Fwebm％2526requiressl％253Dyes％2526keepalive％253Dyes％2526f％2526fir％25D ％253Dyoutube％2526aitags％253D133％25252C134％25252C135％25252C136％25252C137％25252C160％25252C242％25252C243％25252C244％25252C247％25252C248％25252C271％25252C278％25252C313％25252C394％25252C395％25252C396％25252C397％2526signature％253D9C28A5C103FA95701CD3655795DDB7F2C0954828.55534AC9C7BEE5D644C3A34C2CD4A4EEC9E2FD38％2526lmt％253D1550114115045036 ％2526ip％253D129.208.30.232％2526key％253Dyt6％2526c％253DWEB％2526ei％253D3bB5XKeFFNWd1wbBpqjgAg％2526txp％253D5531432％2526id％253Do-AIOVogCB8KFe32o_VgxSx-LqaEjNBZxiZ1jl81VTXZhF％2526sparams％253Daitags％25252Cclen％25252Cdur％25252Cei％25252Cgir％25252Cid％25252Cinitcwndbps％25252Cip ％25252Cipbits％25252Citag％25252Ckeepalive％25252％t2522Cmime％25252Cmm％25252Cmn％25252Cms％25252Cmv％25252Cpl％25252Csquiressl％25252Csource％25252Cusequic％25252Cexpire％2526initcwndbps％253D％26g25％25m25％25D％25D％25D％25D％25D％25D％25D％26D25％25D％25D％25D％25D％26D％25D％25D％26D％25D％26D％25D％25D ％2526dur％253D428.933％2526pl％253D19％2526ipbits％253D0％2526mm％253D31％25252C29％2526mn％253Dsn-nuj-wxqek％25252Csn-hgn7yn7l％26clen％3D547103152％26init％3D0-220％26itag％3 ％26fps％3D30％2Ctype％3Dvideo％252Fwebm％253B％2Bcodecs％253D％2522vp9％2522％26eotf％3Dbt709％26projection_type％3D1％26lmt％3D1550113771564979％26bitrate％3D6318874％26size％3D2560x1440％263％ ％26xtags％3D％26url％3Dhttps％253A％252F％252Fr2 --- sn-nuj-wxqek.googlevideo.com ％252Fvideoplayback％253Fexpire％253D1551500605％2526usequic％253Dno％2526gir％253Dyes％2526mime％253Dvideo％25252Fwebm％2526requiressl％253Dyes％2526keepalive％253Dyes％2526fvip％253D2％2526clen％253D155％25％C％253D％25D25％25％25％25％25％25％25％ ％25252C137％25252C160％25252C242％25252C243％25252C244％25252C247％25252C248％25252C271％25252C278％25252C313％25252C394％25252C395％25252C396％25252C397％2526signature％253D4D7BF761EE4A6DFD048DE3D48550FCE80E61B7D0.D625BCC9645471ABA478F79C197B2208F354E15F％2526lmt％253D1550113771564979％2526ip％253D129.208.30.232％2526key％253Dyt6 ％2526c％253DWEB％2526ei％253D3bB5XKeFFNWd1wbBpqjgAg％2526txp％253D5531432％2526id％253Do-AIOVogCB8KFe32o_VgxSx- .... ext
答案 0 :(得分：0)
我发现代码可以处理此YouTube请求，它是在2015年创建的，因此无法在新的Swift上运行，因此我对其进行了编辑以在Swift 4上运行，只需将此代码复制到新的Swift文件中，然后调用函数h264videosWithYoutubeID（youtubeID：您的TouTube ID），您将获得正确的网址：
import UIKit
public extension NSURL {
func dictionaryForQueryString() -> [String: AnyObject]? {
if let query = self.query {
return query.dictionaryFromQueryStringComponents()
}
let result = absoluteString?.components(separatedBy: "?")
if result!.count > 1 {
return result!.last?.dictionaryFromQueryStringComponents()
}
return nil
}
}
public extension NSString {
func stringByDecodingURLFormat() -> String {
let result = self.replacingOccurrences(of: "+", with: " ")
return result.removingPercentEncoding!
}
func dictionaryFromQueryStringComponents() -> [String: AnyObject] {
var parameters = [String: AnyObject]()
for keyValue in components(separatedBy: "&") {
let keyValueArray = keyValue.components(separatedBy: "=")
if keyValueArray.count < 2 {
continue
}
let key = keyValueArray[0].stringByDecodingURLFormat()
let value = keyValueArray[1].stringByDecodingURLFormat()
parameters[key] = value as AnyObject
}
return parameters
}
}
public class YoutubeUrlReciver: NSObject {
static let infoURL = "http://www.youtube.com/get_video_info?video_id="
static var userAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.79 Safari/537.4"
public static func youtubeIDFromYoutubeURL(youtubeURL: NSURL) -> String? {
if let
youtubeHost = youtubeURL.host,
let youtubePathComponents = youtubeURL.pathComponents {
let youtubeAbsoluteString = youtubeURL.absoluteString
if youtubeHost == "youtu.be" as String? {
return youtubePathComponents[1]
} else if youtubeAbsoluteString?.range(of: "www.youtube.com/embed") != nil {
return youtubePathComponents[2]
} else if youtubeHost == "youtube.googleapis.com" ||
youtubeURL.pathComponents!.first == "www.youtube.com" as String? {
return youtubePathComponents[2]
} else if let
queryString = youtubeURL.dictionaryForQueryString(),
let searchParam = queryString["v"] as? String {
return searchParam
}
}
return nil
}
public static func h264videosWithYoutubeID(youtubeID: String) -> [String: AnyObject]? {
let urlString = String(format: "%@%@", infoURL, youtubeID) as String
let url = NSURL(string: urlString)!
let request = NSMutableURLRequest(url: url as URL)
request.timeoutInterval = 5.0
request.setValue(userAgent, forHTTPHeaderField: "User-Agent")
request.httpMethod = "GET"
var responseString = NSString()
let session = URLSession(configuration: URLSessionConfiguration.default)
let group = DispatchGroup()
group.enter()
session.dataTask(with: request as URLRequest, completionHandler: { (data, response, _) -> Void in
if let data = data as NSData? {
responseString = NSString(data: data as Data, encoding: String.Encoding.utf8.rawValue)!
}
group.leave()
}).resume()
group.wait()
let parts = responseString.dictionaryFromQueryStringComponents()
if parts.count > 0 {
var videoTitle: String = ""
var streamImage: String = ""
if let title = parts["title"] as? String {
videoTitle = title
}
if let image = parts["iurl"] as? String {
streamImage = image
}
if let fmtStreamMap = parts["url_encoded_fmt_stream_map"] as? String {
// Live Stream
if let _: AnyObject = parts["live_playback"]{
if let hlsvp = parts["hlsvp"] as? String {
return [
"url": "\(hlsvp)" as AnyObject,
"title": "\(videoTitle)" as AnyObject,
"image": "\(streamImage)" as AnyObject,
"isStream": true as AnyObject
]
}
} else {
let fmtStreamMapArray = fmtStreamMap.components(separatedBy: ",")
for videoEncodedString in fmtStreamMapArray {
var videoComponents = videoEncodedString.dictionaryFromQueryStringComponents()
videoComponents["title"] = videoTitle as AnyObject
videoComponents["isStream"] = false as AnyObject
return videoComponents as [String: AnyObject]
}
}
}
}
return nil
}
public static func h264videosWithYoutubeURL(youtubeURL: NSURL,completion: ((
_ videoInfo: [String: AnyObject]?, _ error: NSError?) -> Void)?) {
DispatchQueue.global().async {
if let youtubeID = self.youtubeIDFromYoutubeURL(youtubeURL: youtubeURL), let videoInformation = self.h264videosWithYoutubeID(youtubeID: youtubeID) {
DispatchQueue.main.async {
completion?(videoInformation, nil)
}
}else{
DispatchQueue.main.async {
completion?(nil, NSError(domain: "com.player.youtube.backgroundqueue", code: 1001, userInfo: ["error": "Invalid YouTube URL"]))
}
}
}
}
}