Code for download video from Youtube on Java Android

Question

I created code for download video from Youtube  but this code doesn t work with Wi-fi connection and work with mobile connection  Where did I have mistake   import java io File  import java io FileOutputStream  import java io IOException  import java io InputStream  import java io InputStreamReader  import java net HttpURLConnection  import java net MalformedURLException  import java net URL  import java util Enumeration  import java util Vector   import android app Activity  import android app ProgressDialog  import android net Uri  import android os AsyncTask  import android os Bundle  import android util Log  import android widget MediaController  import android widget VideoView   public class MyActivity extends Activity        private class ReceivingDataFromYoutube extends AsyncTask lt String  Void  Void gt             private ProgressDialog dialog   new ProgressDialog MyActivity this           private String result           protected void onPreExecute                 dialog setMessage  Downloading                   dialog show                        Override         protected Void doInBackground String    arg0                int begin  end              String tmpstr   null              try                   URL url new URL  http   www youtube com watch v y12-1miZHLs amp nomobile 1                    HttpURLConnection con    HttpURLConnection  url openConnection                    con setRequestMethod  GET                    InputStream stream con getInputStream                    InputStreamReader reader new InputStreamReader stream                   StringBuffer buffer new StringBuffer                    char   buf new char 262144                                   int chars read                  while   chars read   reader read buf  0  262144      -1                        buffer append buf  0  chars read                                     tmpstr buffer toString                     begin    tmpstr indexOf  url encoded fmt stream map                     end   tmpstr indexOf   amp    begin   27                   if  end    -1                        end   tmpstr indexOf       begin   27                                     tmpstr   UtilClass URLDecode tmpstr substring begin   27  end                   catch  MalformedURLException e                    throw new RuntimeException                  catch  IOException e                    throw new RuntimeException                               Vector url encoded fmt stream map   new Vector                begin   0              end     tmpstr indexOf                    while  end    -1                    url encoded fmt stream map addElement tmpstr substring begin  end                    begin   end   1                  end     tmpstr indexOf      begin                              url encoded fmt stream map addElement tmpstr substring begin  tmpstr length                  String result                   Enumeration url encoded fmt stream map enum   url encoded fmt stream map elements                while  url encoded fmt stream map enum hasMoreElements                      tmpstr    String url encoded fmt stream map enum nextElement                    begin   tmpstr indexOf  itag                     if  begin    -1                        end   tmpstr indexOf   amp    begin   5                        if  end    -1                              end   tmpstr length                                               int fmt   Integer parseInt tmpstr substring begin   5  end                         if  fmt    35                            begin   tmpstr indexOf  url                             if  begin    -1                                end   tmpstr indexOf   amp    begin   4                               if  end    -1                                   end   tmpstr length                                                              result   UtilClass URLDecode tmpstr substring begin   4  end                                this result result                              break                                                                                                       try                 URL u   new URL result                 HttpURLConnection c    HttpURLConnection  u openConnection                  c setRequestMethod  GET                    c setRequestProperty  Youtubedl-no-compression    True                  c setRequestProperty  User-Agent    YouTube                     c setDoOutput true                 c connect                   FileOutputStream f new FileOutputStream new File   sdcard 3 flv                    InputStream in c getInputStream                  byte   buffer new byte 1024                 int sz   0                while    sz   in read buffer    gt  0                        f write buffer 0  sz                                 f close                  catch  MalformedURLException e                    new RuntimeException                  catch  IOException e                    new RuntimeException                              return null                     protected void onPostExecute Void unused                dialog dismiss                                Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout main            new ReceivingDataFromYoutube   execute

User · Accepted Answer

3 steps    Check the sorce code  HTML  of YouTube  you ll get the link like this  http 253A 252F 252Fo-o preferred telemar-cnf1 v18 lscache6 c youtube com 252Fvideoplayback       Decode the url  remove the codes  2B  25 etc   create a decoder with the codes  http   www w3schools com tags ref urlencode asp and use the function Uri decode url  to replace invalid escaped octets  Use the code to download stream   URL u   null  InputStream is   null     try       u   new URL url       is   u openStream         HttpURLConnection huc    HttpURLConnection u openConnection      to know the size of video     int size   huc getContentLength                          if huc    null            String fileName    FILE mp4           String storagePath   Environment getExternalStorageDirectory   toString            File f   new File storagePath fileName            FileOutputStream fos   new FileOutputStream f           byte   buffer   new byte 1024           int len1   0          if is    null                while   len1   is read buffer    gt  0                    fos write buffer 0  len1                                     if fos    null                fos close                                             catch  MalformedURLException mue        mue printStackTrace      catch  IOException ioe        ioe printStackTrace      finally       try                          if is    null                is close                    catch  IOException ioe               just going to ignore this one            That s all  most of stuff you ll find on the web

User · Answer

Ref   Youtube Video Download  Android Java   private static final HashMap lt String  Meta gt  typeMap   new HashMap lt String  Meta gt       initTypeMap    call first  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 lt Video gt  getStreamingUrisFromYouTubePage String ytUrl          throws IOException       if  ytUrl    null            return null                Remove any query params in query string after the watch v  lt vid gt  in        e g         http   www youtube com watch v 0RUPACpf8Vs amp feature youtube gdata player     int andIdx   ytUrl indexOf   amp         if  andIdx  gt   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           HttpsURLConnection c    HttpsURLConnection  new URL ytUrl  openConnection        c setRequestMethod  GET        c setDoOutput true       c connect        InputStream in   c getInputStream        BufferedReader reader   new BufferedReader new InputStreamReader in        StringBuilder str   new StringBuilder        String line   null      while   line   reader readLine       null            str append line replace    u0026     amp                in close        html   str toString            Parse the HTML response and extract the streaming URIs     if  html contains  verify-age-thumb              Log e  Downloader    YouTube is asking for age verification  We can t handle that sorry             return null             if  html contains  das captcha              Log e  Downloader    Captcha found  please try with different IP address             return null             Pattern p   Pattern compile  stream map                        Pattern p   Pattern compile   stream map      amp                Matcher m   p matcher html       List lt String gt  matches   new ArrayList lt String gt         while  m find              matches add m group                if  matches size      1            Log e  Downloader    Found zero or too many stream maps             return null             String urls     matches get 0  split           HashMap lt String  String gt  foundArray   new HashMap lt String  String gt         for  String ppUrl   urls            String url   URLDecoder decode ppUrl   UTF-8            Log e  URL   URL     url            Pattern p1   Pattern compile  itag   0-9      amp              Matcher m1   p1 matcher url           String itag   null          if  m1 find                  itag   m1 group 1                      Pattern p2   Pattern compile  signature        amp              Matcher m2   p2 matcher url           String sig   null          if  m2 find                  sig   m2 group 1             else               Pattern p23   Pattern compile  signature amp s        amp                  Matcher m23   p23 matcher url               if  m23 find                      sig   m23 group 1                                    Pattern p3   Pattern compile  url        amp              Matcher m3   p3 matcher ppUrl           String um   null          if  m3 find                  um   m3 group 1                      if  itag    null  amp  amp  sig    null  amp  amp  um    null                Log e  foundArray   Adding Value                foundArray put itag  URLDecoder decode um   UTF-8       amp                          signature     sig                       Log e  foundArray   Size     foundArray size         if  foundArray size      0            Log e  Downloader    Couldn t find any URLs and corresponding signatures            return null              ArrayList lt Video gt  videos   new ArrayList lt Video gt          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               Log d  Downloader    YouTube Video streaming details  ext     newVideo ext                          type     newVideo type      url     newVideo url                        return videos     private class YouTubePageStreamUriGetter extends AsyncTask lt String  String  ArrayList lt Video gt  gt        ProgressDialog progressDialog        Override     protected void onPreExecute             super onPreExecute            progressDialog   ProgressDialog show webViewActivity this                       Connecting to YouTube      true               Override     protected ArrayList lt Video gt  doInBackground String    params            ArrayList lt Video gt  fVideos   new ArrayList lt  gt             String url   params 0           try               ArrayList lt Video gt  videos   getStreamingUrisFromYouTubePage url                                 Log e  Downloader   Size of Video     videos size                   if  videos    null  amp  amp   videos isEmpty                      for  Video video   videos                                        Log e  Downloader    ext       video ext                       if  video ext toLowerCase   contains  mp4      video ext toLowerCase   contains  3gp      video ext toLowerCase   contains  flv      video ext toLowerCase   contains  webm                              ext   video ext toLowerCase                            fVideos add new Video video ext video type video url                                                              return fVideos                          catch  Exception e                e printStackTrace                Log e  Downloader    Couldn t get YouTube streaming URL   e                     Log e  Downloader    Couldn t get stream URI for     url           return null              Override     protected void onPostExecute ArrayList lt Video gt  streamingUrl            super onPostExecute streamingUrl           progressDialog dismiss            if  streamingUrl    null                if   streamingUrl isEmpty                        Log e  Steaming Url    Value       streamingUrl                    for  int i   0  i  lt  streamingUrl size    i                          Video fX   streamingUrl get i                       Log e  Founded Video    URL       fX url                       Log e  Founded Video    TYPE       fX type                       Log e  Founded Video    EXT       fX ext                                       new ProgressBack   execute new String   streamingUrl  filename         ext                                    public void initTypeMap         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         Edit 2      Some time This Code Not worked proper   Same-origin policy  https   en wikipedia org wiki Same-origin policy  https   en wikipedia org wiki Cross-origin resource sharing  problem of Same-origin policy  Essentially  you cannot download this file from www youtube com because they are different domains  A workaround of this problem is  CORS  1      Ref   https   superuser com questions 773719 how-do-all-of-these-save-video-from-youtube-services-work 773998 773998  url encoded fmt stream map    traditional  contains video and audio stream adaptive fmts                 DASH  contains video or audio stream   Each of these is a comma separated array of what I would call  stream objects   Each  stream object  will contain values like this  url     direct HTTP link to a video itag    code specifying the quality s       signature  security measure to counter downloading   Each URL will be encoded so you will need to decode them  Now the tricky part   YouTube has at least 3 security levels for their videos  unsecured    as expected  you can download these with just the unencoded URL s            see below RTMPE        uses  rtmpe     protocol  no known method for these   The RTMPE videos are typically used on official full length movies  and are protected with SWF Verification Type 2  This has been around since 2011 and has yet to be reverse engineered   The type  s  videos are the most difficult that can actually be downloaded  You will typcially see these on VEVO videos and the like  They start with a signature such as  AA5D05FA7771AD4868BA4C977C3DEAAC620DE020E 0F421820F42978A1F8EAFCDAC4EF507DB5 Then the signature is scrambled with a function like this  function mo a      a   a split        a   lo rw a  1     a   lo rw a  32     a   lo IC a  1     a   lo wS a  77     a   lo IC a  3     a   lo wS a  77     a   lo IC a  3     a   lo wS a  44     return a join         This function is dynamic  it typically changes every day  To make it more difficult the function is hosted at a URL such as  http   s ytimg com yts jsbin html5player-en US-vflycBCEX js  this introduces the problem of Same-origin policy  Essentially  you cannot download this file from www youtube com because they are different domains  A workaround of this problem is CORS  With CORS  s ytimg com could add this header  Access-Control-Allow-Origin  http   www youtube com   and it would allow the JavaScript to download from www youtube com  Of course they do not do this  A workaround for this workaround is to use a CORS proxy  This is a proxy that responds with the following header to all requests  Access-Control-Allow-Origin      So  now that you have proxied your JS file  and used the function to scramble the signature  you can use that in the querystring to download a video

User · Answer

METHOD 1   Recommanded    Library YouTubeExtractor  Add into your gradle file   allprojects           repositories               maven   url  https   jitpack io                      And dependencies   compile  com github Commit451 YouTubeExtractor youtubeextractor 2 1 0    Add this small code and you done  Demo HERE   public class MainActivity extends AppCompatActivity        private static final String YOUTUBE ID    ea4-5mrpGfE        private final YouTubeExtractor mExtractor   YouTubeExtractor create          private Callback lt YouTubeExtractionResult gt  mExtractionCallback   new Callback lt YouTubeExtractionResult gt               Override         public void onResponse Call lt YouTubeExtractionResult gt  call  Response lt YouTubeExtractionResult gt  response                bindVideoResult response body                         Override         public void onFailure Call lt YouTubeExtractionResult gt  call  Throwable t                onError t                           Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main               For android youtube extractor library  com github Commit451 YouTubeExtractor youtubeextractor 2 1 0          mExtractor extract YOUTUBE ID  enqueue mExtractionCallback                private void onError Throwable t            t printStackTrace            Toast makeText MainActivity this   It failed to extract  So sad   Toast LENGTH SHORT  show                private void bindVideoResult YouTubeExtractionResult result               Here you can get download url link         Log d  OnSuccess    Got a result with the best url      result getBestAvailableQualityVideoUri              Toast makeText this   result       result getSd360VideoUri    Toast LENGTH SHORT  show              You can get download link in bindVideoResult   method   METHOD 2  Using this library android-youtubeExtractor   Add into gradle file   repositories       maven   url  https   jitpack io       compile  com github HaarigerHarald android-youtubeExtractor master-SNAPSHOT    Here is the code for getting download url          String youtubeLink    http   youtube com watch v xxxx        YouTubeUriExtractor ytEx   new YouTubeUriExtractor this             Override         public void onUrisAvailable String videoId  String videoTitle  SparseArray lt YtFile gt  ytFiles                if  ytFiles    null                    int itag   22     Here you can get download url                 String downloadUrl   ytFiles get itag  getUrl                                        ytEx execute youtubeLink

[java] Code for download video from Youtube on Java, Android

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