How to download videos from youtube on java

Question

how to download videos from youtube on Java  need class or piece of code  which describes how to do that  Thank you

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import java io BufferedReader  import java io File  import java io FileOutputStream  import java io IOException  import java io InputStream  import java io InputStreamReader  import java io Reader  import java io StringWriter  import java io UnsupportedEncodingException  import java io Writer  import java net URI  import java net URISyntaxException  import java util ArrayList  import java util List  import java util Scanner  import java util logging Formatter  import java util logging Handler  import java util logging Level  import java util logging LogRecord  import java util logging Logger  import java util regex Pattern   import org apache http HttpEntity  import org apache http HttpResponse  import org apache http NameValuePair  import org apache http client CookieStore  import org apache http client HttpClient  import org apache http client methods HttpGet  import org apache http client protocol ClientContext  import org apache http client utils URIUtils  import org apache http client utils URLEncodedUtils  import org apache http impl client BasicCookieStore  import org apache http impl client DefaultHttpClient  import org apache http message BasicNameValuePair  import org apache http protocol BasicHttpContext  import org apache http protocol HttpContext   public class JavaYoutubeDownloader     public static String newline   System getProperty  line separator     private static final Logger log   Logger getLogger JavaYoutubeDownloader class getCanonicalName      private static final Level defaultLogLevelSelf   Level FINER   private static final Level defaultLogLevel   Level WARNING   private static final Logger rootlog   Logger getLogger       private static final String scheme    http    private static final String host    www youtube com    private static final Pattern commaPattern   Pattern compile        private static final Pattern pipePattern   Pattern compile          private static final char   ILLEGAL FILENAME CHARACTERS            n     r     t     0     f                          lt      gt                        private static void usage String error      if  error    null       System err println  Error      error         System err println  usage  JavaYoutubeDownload VIDEO ID DESTINATION DIRECTORY      System exit -1        public static void main String   args      if  args    null    args length    0       usage  Missing video id  Extract from http   www youtube com watch v VIDEO ID          try      setupLogging        log fine  Starting       String videoId   null     String outdir              TODO Ghetto command line parsing    if  args length    1        videoId   args 0        else if  args length    2        videoId   args 0       outdir   args 1            int format   18     http   en wikipedia org wiki YouTube Quality and codecs    String encoding    UTF-8      String userAgent    Mozilla 5 0  Windows  U  Windows NT 6 1  en-US  rv 1 9 2 13  Gecko 20101203 Firefox 3 6 13      File outputDir   new File outdir      String extension   getExtension format       play videoId  format  encoding  userAgent  outputDir  extension        catch  Throwable t       t printStackTrace          log fine  Finished         private static String getExtension int format         TODO   return  mp4        private static void play String videoId  int format  String encoding  String userAgent  File outputdir  String extension  throws Throwable     log fine  Retrieving     videoId     List lt NameValuePair gt  qparams   new ArrayList lt NameValuePair gt       qparams add new BasicNameValuePair  video id   videoId      qparams add new BasicNameValuePair  fmt        format      URI uri   getUri  get video info   qparams      CookieStore cookieStore   new BasicCookieStore      HttpContext localContext   new BasicHttpContext      localContext setAttribute ClientContext COOKIE STORE  cookieStore      HttpClient httpclient   new DefaultHttpClient      HttpGet httpget   new HttpGet uri     httpget setHeader  User-Agent   userAgent      log finer  Executing     uri     HttpResponse response   httpclient execute httpget  localContext     HttpEntity entity   response getEntity      if  entity    null  amp  amp  response getStatusLine   getStatusCode      200       InputStream instream   entity getContent       String videoInfo   getStringFromInputStream encoding  instream      if  videoInfo    null  amp  amp  videoInfo length    gt  0        List lt NameValuePair gt  infoMap   new ArrayList lt NameValuePair gt         URLEncodedUtils parse infoMap  new Scanner videoInfo   encoding       String token   null      String downloadUrl   null      String filename   videoId       for  NameValuePair pair   infoMap         String key   pair getName         String val   pair getValue         log finest key         val        if  key equals  token            token   val         else if  key equals  title            filename   val         else if  key equals  fmt url map            String   formats   commaPattern split val         for  String fmt   formats           String   fmtPieces   pipePattern split fmt          if  fmtPieces length    2               in the end  download somethin          downloadUrl   fmtPieces 1           int pieceFormat   Integer parseInt fmtPieces 0            if  pieceFormat    format                found what we want          downloadUrl   fmtPieces 1            break                                               filename   cleanFilename filename       if  filename length      0         filename   videoId        else        filename          videoId            filename          extension      File outputfile   new File outputdir  filename        if  downloadUrl    null         downloadWithHttpClient userAgent  downloadUrl  outputfile                       private static void downloadWithHttpClient String userAgent  String downloadUrl  File outputfile  throws Throwable     HttpGet httpget2   new HttpGet downloadUrl     httpget2 setHeader  User-Agent   userAgent      log finer  Executing     httpget2 getURI       HttpClient httpclient2   new DefaultHttpClient      HttpResponse response2   httpclient2 execute httpget2     HttpEntity entity2   response2 getEntity      if  entity2    null  amp  amp  response2 getStatusLine   getStatusCode      200       long length   entity2 getContentLength       InputStream instream2   entity2 getContent       log finer  Writing     length     bytes to     outputfile      if  outputfile exists          outputfile delete            FileOutputStream outstream   new FileOutputStream outputfile      try       byte   buffer   new byte 2048       int count   -1      while   count   instream2 read buffer      -1         outstream write buffer  0  count             outstream flush         finally       outstream close                  private static String cleanFilename String filename      for  char c   ILLEGAL FILENAME CHARACTERS       filename   filename replace c              return filename       private static URI getUri String path  List lt NameValuePair gt  qparams  throws URISyntaxException     URI uri   URIUtils createURI scheme  host  -1        path  URLEncodedUtils format qparams   UTF-8    null     return uri       private static void setupLogging       changeFormatter new Formatter         Override    public String format LogRecord arg0        return arg0 getMessage     newline               explicitlySetAllLogging Level FINER        private static void changeFormatter Formatter formatter      Handler   handlers   rootlog getHandlers      for  Handler handler   handlers       handler setFormatter formatter            private static void explicitlySetAllLogging Level level      rootlog setLevel Level ALL     for  Handler handler   rootlog getHandlers         handler setLevel defaultLogLevelSelf         log setLevel level     rootlog setLevel defaultLogLevel        private static String getStringFromInputStream String encoding  InputStream instream  throws UnsupportedEncodingException  IOException     Writer writer   new StringWriter       char   buffer   new char 1024     try      Reader reader   new BufferedReader new InputStreamReader instream  encoding       int n     while   n   reader read buffer      -1        writer write buffer  0  n            finally      instream close          String result   writer toString      return result                lt pre gt     Exploded results from get video info         fexp 90       allow embed 1    fmt stream map 35 http   v9 lscache8       fmt url map 35 http   v9 lscache8       allow ratings 1    keywords Stefan Molyneux Luke Bessey anarchy stateless society giant stone cow the story of our unenslavement market anarchy voluntaryism anarcho capitalism    track embed 0    fmt list 35 854x480 9 0 115 34 640x360 9 0 115 18 640x360 9 0 115 5 320x240 7 0 0    author lukebessey    muted 0    length seconds 390    plid AA       ftoken null    status ok    watermark http   s ytimg com yt swf logo-vfl bP6ud swf http   s ytimg com yt swf hdlogo-vfloR6wva swf    timestamp 12       has cc False    fmt map 35 854x480 9 0 115 34 640x360 9 0 115 18 640x360 9 0 115 5 320x240 7 0 0    leanback module http   s ytimg com yt swfbin leanback module-vflJYyeZN swf    hl en US    endscreen module http   s ytimg com yt swfbin endscreen-vflk19iTq swf    vq auto    avg rating 5 0    video id S6IZP3yRJ9I    token vPpcFNh       thumbnail url http   i4 ytimg com vi S6IZP3yRJ9I default jpg    title The Story of Our Unenslavement - Animated     lt  pre gt

User · Answer

ytd2 is a fully functional YouTube video downloader  Check out its source code if you want to see how it s done   Alternatively  you can also call an external process like youtube-dl to do the job  This is probably the easiest solution but it isn t in  pure  Java

User · Answer

I know i am answering late  But this code may useful for some one  So i am attaching it here   Use the following java code to download the videos from YouTube   package com mycompany ytd   import java io File  import java net URL  import com github axet vget VGet              author Manindar     public class YTD        public static void main String   args            try               String url    https   www youtube com watch v s10ARdfQUOY               String path    D   Manindar  YTD                 VGet v   new VGet new URL url   new File path                v download              catch  Exception e                throw new RuntimeException e                       Add the below Dependency in your POM XML file           lt dependency gt               lt groupId gt com github axet lt  groupId gt               lt artifactId gt vget lt  artifactId gt               lt version gt 1 1 33 lt  version gt           lt  dependency gt    Hope this will be useful

User · Answer

Regarding the format  mp4 or flv  decide which URL you want to use  Then use this tutorial to download the video and save it into a local directory

User · Answer

Ref  Youtube Video Download  Android Java   Edit 3  You can use the Lib   https   github com HaarigerHarald android-youtubeExtractor  Ex     String youtubeLink    http   youtube com watch v xxxx    new YouTubeExtractor this     Override public void onExtractionComplete SparseArray lt YtFile gt  ytFiles  VideoMeta vMeta        if  ytFiles    null            int itag   22      String downloadUrl   ytFiles get itag  getUrl              extract youtubeLink  true  true     They decipherSignature using     private boolean decipherSignature final SparseArray lt String gt  encSignatures  throws IOException          Assume the functions don t change that much     if  decipherFunctionName    null    decipherFunctions    null            String decipherFunctUrl    https   s ytimg com yts jsbin     decipherJsFileName           BufferedReader reader   null          String javascriptFile          URL url   new URL decipherFunctUrl           HttpURLConnection urlConnection    HttpURLConnection  url openConnection            urlConnection setRequestProperty  User-Agent   USER AGENT           try               reader   new BufferedReader new InputStreamReader urlConnection getInputStream                  StringBuilder sb   new StringBuilder                  String line              while   line   reader readLine       null                    sb append line                   sb append                                 javascriptFile   sb toString              finally               if  reader    null                  reader close                urlConnection disconnect                       if  LOGGING              Log d LOG TAG   Decipher FunctURL      decipherFunctUrl           Matcher mat   patSignatureDecFunction matcher javascriptFile           if  mat find                  decipherFunctionName   mat group 1               if  LOGGING                  Log d LOG TAG   Decipher Functname      decipherFunctionName                Pattern patMainVariable   Pattern compile   var    s         decipherFunctionName replace                                      function      1 3                          String mainDecipherFunct               mat   patMainVariable matcher javascriptFile               if  mat find                      mainDecipherFunct    var     decipherFunctionName   mat group 2                 else                   Pattern patMainFunction   Pattern compile  function     decipherFunctionName replace                                               1 3                             mat   patMainFunction matcher javascriptFile                   if   mat find                        return false                  mainDecipherFunct    function     decipherFunctionName   mat group 2                              int startIndex   mat end                 for  int braces   1  i   startIndex  i  lt  javascriptFile length    i                      if  braces    0  amp  amp  startIndex   5  lt  i                        mainDecipherFunct    javascriptFile substring startIndex  i                             break                                    if  javascriptFile charAt i                              braces                    else if  javascriptFile charAt i                              braces--                            decipherFunctions   mainDecipherFunct                 Search the main function for extra functions and variables                needed for deciphering                Search for variables             mat   patVariableFunction matcher mainDecipherFunct               while  mat find                      String variableDef    var     mat group 2                          if  decipherFunctions contains variableDef                         continue                                    startIndex   javascriptFile indexOf variableDef    variableDef length                    for  int braces   1  i   startIndex  i  lt  javascriptFile length    i                          if  braces    0                            decipherFunctions    variableDef   javascriptFile substring startIndex  i                                 break                                            if  javascriptFile charAt i                                  braces                        else if  javascriptFile charAt i                                  braces--                                                 Search for functions             mat   patFunction matcher mainDecipherFunct               while  mat find                      String functionDef    function     mat group 2                         if  decipherFunctions contains functionDef                         continue                                    startIndex   javascriptFile indexOf functionDef    functionDef length                    for  int braces   0  i   startIndex  i  lt  javascriptFile length    i                          if  braces    0  amp  amp  startIndex   5  lt  i                            decipherFunctions    functionDef   javascriptFile substring startIndex  i                                 break                                            if  javascriptFile charAt i                                  braces                        else if  javascriptFile charAt i                                  braces--                                               if  LOGGING                  Log d LOG TAG   Decipher Function      decipherFunctions               decipherViaWebView encSignatures               if  CACHING                    writeDeciperFunctToChache                            else               return false                  else           decipherViaWebView encSignatures             return true      Now with use of this library High Quality Videos Lossing Audio so i use the MediaMuxer for Murging Audio and Video for Final Output  Edit 1  https   stackoverflow com a 15240012 9909365  Why the previous answer not worked    Pattern p2   Pattern compile  sig        amp              Matcher m2   p2 matcher url           String sig   null          if  m2 find                  sig   m2 group 1                  As of November 2016  this is a little rough around the edges  but   displays the basic principle  The url encoded fmt stream map today   does not have a space after the colon  better make this optional  and    sig  has been changed to  signature       and while i am debuging the code i found the new keyword its   signature amp s in many video s URL   here edited answer  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

[java] How to download videos from youtube on java?

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