Java 如何在 Android 的 ExoPlayer 中播放 Youtube 视频？
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How to play Youtube video in ExoPlayer in Android?
提问by Amit Prajapati
I am trying to play youtube video in exoplayer but here is some confusion I don't know what is DASH url, I have only real youtube url like "https://www.youtube.com/watch?v=v1uyQZNg2vE" , I have no idea how to generate dash url form real url.
我正在尝试在 exoplayer 中播放 youtube 视频，但这里有些混乱我不知道什么是 DASH 网址，我只有真正的 youtube 网址，例如“ https://www.youtube.com/watch?v=v1uyQZNg2vE”，我不知道如何从真实 url 生成破折号 url。
Dash Url:
破折号网址：
new Sample("Google Glass",
"http://www.youtube.com/api/manifest/dash/id/bf5bb2419360daf1/source/youtube?"
+ "as=fmp4_audio_clear,fmp4_sd_hd_clear&sparams=ip,ipbits,expire,as&ip=0.0.0.0&"
+ "ipbits=0&expire=19000000000&signature=255F6B3C07C753C88708C07EA31B7A1A10703C8D."
+ "2D6A28B21F921D0B245CDCF36F7EB54A2B5ABFC2&key=ik0", DemoUtil.TYPE_DASH),
Real Url :
真实网址：
https://www.youtube.com/watch?v=v1uyQZNg2vE
回答by GAG'sB
You will have to get the HTTP response from the youtube URL (in your case real URL) and then search for the section "url_encoded_fmt_stream_map". In that section you will get a URI which needs to be decoded twice to get the DASH URL you are looking for.
您必须从 youtube 网址（在您的情况下为真实网址）获取 HTTP 响应，然后搜索“url_encoded_fmt_stream_map”部分。在该部分中，您将获得一个 URI，该 URI 需要解码两次才能获得您要查找的 DASH URL。
回答by Karim Abdell Salam
I had the same issue but i finally found the simplest solution and its working so good
我遇到了同样的问题，但我终于找到了最简单的解决方案，而且效果很好
First you need to call this url..
HTTP GET: https://www.youtube.com/get_video_info?&video_id=[video_id]&el=info&ps=default&eurl=&gl=US&hl=en
首先你需要调用这个网址..
HTTP GET：https: //www.youtube.com/get_video_info?&video_id =[video_id] &el =info &ps =default &eurl =&gl =US &hl=en
and don't forget to change the last id with the target one.
并且不要忘记使用目标 ID 更改最后一个 ID。
- now you will get notice to download a file called get_video_info with no extesion.
- try to open this file using notepad and so.
- Now you have the right data but you can't read it because its encoded You need HTML decoder to reed this data use this one: http://meyerweb.com/eric/tools/dencoder/
- 现在你会收到通知下载一个名为 get_video_info 的文件，没有扩展。
- 尝试使用记事本等打开此文件。
- 现在您拥有正确的数据，但您无法读取它，因为它已编码您需要 HTML 解码器来读取此数据，请使用此数据：http: //meyerweb.com/eric/tools/dencoder/
-just paste your data and press decode a several times to ensure it decoded well
- 只需粘贴您的数据并按解码几次以确保其解码良好
finally search for a key called dashmpd
最后搜索一个叫做 dashmpd 的键
and enjoy ur URL
并享受您的网址
Or use this Simple Solution
或者使用这个简单的解决方案
private void extractYoutubeUrl() {
@SuppressLint("StaticFieldLeak") YouTubeExtractor mExtractor = new YouTubeExtractor(this) {
@Override
protected void onExtractionComplete(SparseArray<YtFile> sparseArray, VideoMeta videoMeta) {
if (sparseArray != null) {
playVideo(sparseArray.get(17).getUrl());
}
}
};
mExtractor.extract(mYoutubeLink, true, true);
implementation 'com.github.HaarigerHarald:android-youtubeExtractor:v1.7.0'
回答by MARK002-MAB
I've written a class that retrieves actual YouTube video streaming URL for format like DASH and HLS using http://www.youtube.com/get_video_info?&video_id=[video_id]&el=info&ps=default&eurl=&gl=US&hl=enurl with video ID as described by Karim Abdell Salam. I have also tested the URL in an app that uses ExoPlayerand it works:
我编写了一个类，它使用http://www.youtube.com/get_video_info?&video_id=[video_id]&el=info&ps=default&eurl=&gl=US&hl=enurl检索 DASH 和 HLS 等格式的实际 YouTube 视频流 URL Karim Abdell Salam描述的视频 ID 。我还在一个使用ExoPlayer的应用程序中测试了 URL ，它可以工作：
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLDecoder;
import java.util.Map;
import java.util.TreeMap;
/**
* Represents youtube video information retriever.
*/
public class YouTubeVideoInfoRetriever
{
private static final String URL_YOUTUBE_GET_VIDEO_INFO = "http://www.youtube.com/get_video_info?&video_id=";
public static final String KEY_DASH_VIDEO = "dashmpd";
public static final String KEY_HLS_VIDEO = "hlsvp";
private TreeMap<String, String> kvpList = new TreeMap<>();
public void retrieve(String videoId) throws IOException
{
String targetUrl = URL_YOUTUBE_GET_VIDEO_INFO + videoId+"&el=info&ps=default&eurl=&gl=US&hl=en";
SimpleHttpClient client = new SimpleHttpClient();
String output = client.execute(targetUrl, SimpleHttpClient.HTTP_GET, SimpleHttpClient.DEFAULT_TIMEOUT);
parse(output);
}
public String getInfo(String key)
{
return kvpList.get(key);
}
public void printAll()
{
System.out.println("TOTAL VARIABLES=" + kvpList.size());
for(Map.Entry<String, String> entry : kvpList.entrySet())
{
System.out.print( "" + entry.getKey() + "=");
System.out.println("" + entry.getValue() + "");
}
}
private void parse(String data) throws UnsupportedEncodingException
{
String[] splits = data.split("&");
String kvpStr = "";
if(splits.length < 1)
{
return;
}
kvpList.clear();
for(int i = 0; i < splits.length; ++i)
{
kvpStr = splits[i];
try
{
// Data is encoded multiple times
kvpStr = URLDecoder.decode(kvpStr, SimpleHttpClient.ENCODING_UTF_8);
kvpStr = URLDecoder.decode(kvpStr, SimpleHttpClient.ENCODING_UTF_8);
String[] kvpSplits = kvpStr.split("=", 2);
if(kvpSplits.length == 2)
{
kvpList.put(kvpSplits[0], kvpSplits[1]);
}
else if(kvpSplits.length == 1)
{
kvpList.put(kvpSplits[0], "");
}
}
catch (UnsupportedEncodingException ex)
{
throw ex;
}
}
}
public static class SimpleHttpClient
{
public static final String ENCODING_UTF_8 = "UTF-8";
public static final int DEFAULT_TIMEOUT = 10000;
public static final String HTTP_GET = "GET";
public String execute(String urlStr, String httpMethod, int timeout) throws IOException
{
URL url = null;
HttpURLConnection conn = null;
InputStream inStream = null;
OutputStream outStream = null;
String response = null;
try
{
url = new URL(urlStr);
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(timeout);
conn.setRequestMethod(httpMethod);
inStream = new BufferedInputStream(conn.getInputStream());
response = getInput(inStream);
}
finally
{
if(conn != null && conn.getErrorStream() != null)
{
String errorResponse = " : ";
errorResponse = errorResponse + getInput(conn.getErrorStream());
response = response + errorResponse;
}
if (conn != null)
{
conn.disconnect();
}
}
return response;
}
private String getInput(InputStream in) throws IOException
{
StringBuilder sb = new StringBuilder(8192);
byte[] b = new byte[1024];
int bytesRead = 0;
while (true)
{
bytesRead = in.read(b);
if (bytesRead < 0)
{
break;
}
String s = new String(b, 0, bytesRead, ENCODING_UTF_8);
sb.append(s);
}
return sb.toString();
}
}
}
Here is the test code:
下面是测试代码：
public static void main(String[] args)
{
String youTubeVideoID = "v1uyQZNg2vE";
YouTubeVideoInfoRetriever retriever = new YouTubeVideoInfoRetriever();
try
{
retriever.retrieve(youTubeVideoID);
System.out.println(retriever.getInfo(YouTubeVideoInfoRetriever.KEY_DASH_VIDEO));
}
catch (IOException e)
{
e.printStackTrace();
}
}
回答by sajad abbasi
to play youtube video in exoplayer we can use this library
要在 exoplayer 中播放 youtube 视频，我们可以使用这个库
https://github.com/HaarigerHarald/android-youtubeExtractor
and simply get the url like this and then play in exoplyer
并简单地获取这样的网址，然后在 exoplyer 中播放
String youtubeLink = "http://youtube.com/watch?v=xxxx";
new YouTubeExtractor(this) {
@Override
public void onExtractionComplete(SparseArray<YtFile> ytFiles, VideoMeta vMeta) {
if (ytFiles != null) {
int itag = 22;
String downloadUrl = ytFiles.get(itag).getUrl();
}
}
}.extract(youtubeLink, true, true);
