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如何获取在Java中的Android上下载YouTube视频的URL?获取YouTube视频的下载网址(Android/Java)
如何获取在Java中的Android上下载YouTube视频的URL?获取YouTube视频的下载网址(Android/Java)
这是我在Java/Android中的实现,用于检索YouTube视频的下载URL。在这里和网络上已经有很多帖子,但其中大部分看起来已经损坏或者不在Java中。这是截至2013年3月6日。以下是Android代码提取可用的流式URI并返回最符合以下顺序的一个:
mp4 medium quality - > 3gp medium quality - > mp4 low quality - > 3gp低质量
有其他地方的代码你想要做什么与URL(下载/流等)。
new YouTubePageStreamUriGetter().execute("https://www.youtube.com/watch?v=4GuqB1BQVr4");
class Meta {
public String num;
public String type;
public String ext;
Meta(String num, String ext, String type) {
this.num = num;
this.ext = ext;
this.type = type;
}
}
class Video {
public String ext = "";
public String type = "";
public String url = "";
Video(String ext, String type, String url) {
this.ext = ext;
this.type = type;
this.url = url;
}
}
public ArrayList<Video> getStreamingUrisFromYouTubePage(String ytUrl)
throws IOException {
if (ytUrl == null) {
return null;
}
// Remove any query params in query string after the watch?v=<vid> in
// e.g.
// http://www.youtube.com/watch?v=0RUPACpf8Vs&feature=youtube_gdata_player
int andIdx = ytUrl.indexOf('&');
if (andIdx >= 0) {
ytUrl = ytUrl.substring(0, andIdx);
}
// Get the HTML response
String userAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0.1)";
HttpClient client = new DefaultHttpClient();
client.getParams().setParameter(CoreProtocolPNames.USER_AGENT,
userAgent);
HttpGet request = new HttpGet(ytUrl);
HttpResponse response = client.execute(request);
String html = "";
InputStream in = response.getEntity().getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder str = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
str.append(line.replace("\\u0026", "&"));
}
in.close();
html = str.toString();
// Parse the HTML response and extract the streaming URIs
if (html.contains("verify-age-thumb")) {
CLog.w("YouTube is asking for age verification. We can't handle that sorry.");
return null;
}
if (html.contains("das_captcha")) {
CLog.w("Captcha found, please try with different IP address.");
return null;
}
Pattern p = Pattern.compile("stream_map\": \"(.*?)?\"");
// Pattern p = Pattern.compile("/stream_map=(.[^&]*?)\"/");
Matcher m = p.matcher(html);
List<String> matches = new ArrayList<String>();
while (m.find()) {
matches.add(m.group());
}
if (matches.size() != 1) {
CLog.w("Found zero or too many stream maps.");
return null;
}
String urls[] = matches.get(0).split(",");
HashMap<String, String> foundArray = new HashMap<String, String>();
for (String ppUrl : urls) {
String url = URLDecoder.decode(ppUrl, "UTF-8");
Pattern p1 = Pattern.compile("itag=([0-9]+?)[&]");
Matcher m1 = p1.matcher(url);
String itag = null;
if (m1.find()) {
itag = m1.group(1);
}
Pattern p2 = Pattern.compile("sig=(.*?)[&]");
Matcher m2 = p2.matcher(url);
String sig = null;
if (m2.find()) {
sig = m2.group(1);
}
Pattern p3 = Pattern.compile("url=(.*?)[&]");
Matcher m3 = p3.matcher(ppUrl);
String um = null;
if (m3.find()) {
um = m3.group(1);
}
if (itag != null && sig != null && um != null) {
foundArray.put(itag, URLDecoder.decode(um, "UTF-8") + "&"
+ "signature=" + sig);
}
}
if (foundArray.size() == 0) {
CLog.w("Couldn't find any URLs and corresponding signatures");
return null;
}
HashMap<String, Meta> typeMap = new HashMap<String, Meta>();
typeMap.put("13", new Meta("13", "3GP", "Low Quality - 176x144"));
typeMap.put("17", new Meta("17", "3GP", "Medium Quality - 176x144"));
typeMap.put("36", new Meta("36", "3GP", "High Quality - 320x240"));
typeMap.put("5", new Meta("5", "FLV", "Low Quality - 400x226"));
typeMap.put("6", new Meta("6", "FLV", "Medium Quality - 640x360"));
typeMap.put("34", new Meta("34", "FLV", "Medium Quality - 640x360"));
typeMap.put("35", new Meta("35", "FLV", "High Quality - 854x480"));
typeMap.put("43", new Meta("43", "WEBM", "Low Quality - 640x360"));
typeMap.put("44", new Meta("44", "WEBM", "Medium Quality - 854x480"));
typeMap.put("45", new Meta("45", "WEBM", "High Quality - 1280x720"));
typeMap.put("18", new Meta("18", "MP4", "Medium Quality - 480x360"));
typeMap.put("22", new Meta("22", "MP4", "High Quality - 1280x720"));
typeMap.put("37", new Meta("37", "MP4", "High Quality - 1920x1080"));
typeMap.put("33", new Meta("38", "MP4", "High Quality - 4096x230"));
ArrayList<Video> videos = new ArrayList<ARViewer.Video>();
for (String format : typeMap.keySet()) {
Meta meta = typeMap.get(format);
if (foundArray.containsKey(format)) {
Video newVideo = new Video(meta.ext, meta.type,
foundArray.get(format));
videos.add(newVideo);
CLog.d("YouTube Video streaming details: ext:" + newVideo.ext
+ ", type:" + newVideo.type + ", url:" + newVideo.url);
}
}
return videos;
}
private class YouTubePageStreamUriGetter extends
AsyncTask<String, String, String> {
ProgressDialog progressDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = ProgressDialog.show(ARViewer.this, "",
"Connecting to YouTube...", true);
}
@Override
protected String doInBackground(String... params) {
String url = params[0];
try {
ArrayList<Video> videos = getStreamingUrisFromYouTubePage(url);
if (videos != null && !videos.isEmpty()) {
String retVidUrl = null;
for (Video video : videos) {
if (video.ext.toLowerCase().contains("mp4")
&& video.type.toLowerCase().contains("medium")) {
retVidUrl = video.url;
break;
}
}
if (retVidUrl == null) {
for (Video video : videos) {
if (video.ext.toLowerCase().contains("3gp")
&& video.type.toLowerCase().contains(
"medium")) {
retVidUrl = video.url;
break;
}
}
}
if (retVidUrl == null) {
for (Video video : videos) {
if (video.ext.toLowerCase().contains("mp4")
&& video.type.toLowerCase().contains("low")) {
retVidUrl = video.url;
break;
}
}
}
if (retVidUrl == null) {
for (Video video : videos) {
if (video.ext.toLowerCase().contains("3gp")
&& video.type.toLowerCase().contains("low")) {
retVidUrl = video.url;
break;
}
}
}
return retVidUrl;
}
} catch (Exception e) {
CLog.e("Couldn't get YouTube streaming URL", e);
}
CLog.w("Couldn't get stream URI for " + url);
return null;
}
@Override
protected void onPostExecute(String streamingUrl) {
super.onPostExecute(streamingUrl);
progressDialog.dismiss();
if (streamingUrl != null) {
/* Do what ever you want with streamUrl */
}
}
}
我忘了,我根据我的很多逻辑上的PHP脚本由于信贷应给予NGCoders:http://www.ngcoders.com/php-script/php-youtube-video-downloader -script/ – pilcrowpipe 2013-03-06 06:00:58
我相信信用应该在答案中给出。评论并不总是显示出来,并且可能会忽略该属性。 – 2013-03-06 07:56:10
你错过了把它放在GPL下。 – hakre 2013-03-06 12:14:20