Recherche avancée

Sur d’autres sites (11751)

• Revision 50040 : Un oups sur le Json On a ajouté un élément u_site pour un site

  28 juillet 2011, par kent1@… — Log

  Un oups sur le Json
  On a ajouté un élément u_site pour un site

• Http 400 error : requesting https site with ip instead of hostname Android

  8 novembre 2016, par David Barishev

  Im am developing an android application using xamarin.android.
  In my application i use ffmpeg as a static library, from here.

  In my app i try to access a https site, but i was getting a dns error until i read the documentation, it stated that :

  A limitation of statically linking glibc is the loss of DNS
  resolution. Installing
  nscd through your package manager will fix this or you can use
  "ffmpeg -i http://<ip address="address" here="here">/"</ip> instead of "ffmpeg -i http://example.com/"

  So i tried to lookup the ip address and just replace the hostname. Here is the code i have written :

  ...
  
  //part of main program
  
  if (inputUrl.StartsWith("http"))
  
  {
  
     var splits = inputUrl.Split('/');
  
     var hostName = splits[2];
  
     var ip = GetIpForHost(hostName);
  
     splits[2] = ip;
  
     inputUrl= string.Join("/",splits);
  
  }
  
  //calling ffmpeg with the new url
  
  ...
  
  
  
  private static string GetIpForHost(string hostname)
  
  {
  
      System.Net.IPHostEntry host = System.Net.Dns.GetHostEntry(hostname);
  
      return host.AddressList.First().ToString();
  
  }

  The code works fine, but now i’m getting different error, here is the ffmpeg log :

  [https @ 0xb2b08e0] HTTP error 400 Bad Request

  The original url i tried :

  https://r8---sn-ivuoxu-ua8l.googlevideo.com/videoplayback?pl=26&itag=22&mt=1478622247&ms=au&ei=Mv0hWLWEAs-VW7zch6AB&mv=m&upn=DLluZN9oSzo&mn=sn-ivuoxu-ua8l&expire=1478644114&mm=31&ratebypass=yes&id=o-AC_NwrGbkh5OVe-ypJh2WaxzMBK5grMVsSYyG_wMQVZI&ip=5.29.246.6&pcm2cms=yes&key=yt6&lmt=1478408938763105&dur=229.575&initcwndbps=2682500&ipbits=0&gcr=il&requiressl=yes&sparams=dur,ei,gcr,id,initcwndbps,ip,ipbits,itag,lmt,mime,mm,mn,ms,mv,pcm2cms,pl,ratebypass,requiressl,source,upn,expire&mime=video/mp4&source=youtube&signature=0E47DFC7FBBDBCD6F36B56FB9871ED3B0DF4D12A.103BAB44FFEE918B78C7D076243B45AF69C444EC
  
  //Modifed url
  
  https://213.57.23.19/videoplayback?ratebypass=yes&ipbits=0&pl=26&requiressl=yes&mime=video/mp4&expire=1478643396&pcm2cms=yes&mt=1478621598&upn=mUgYIoXd3Dc&itag=22&mm=31&mn=sn-ivuoxu-ua8l&key=yt6&ip=5.29.246.6&dur=229.575&source=youtube&lmt=1478408938763105&ei=ZPohWKzbFoG9cpGGsIgH&id=o-AFbYd2BFoMp37bNWC1c0mtfqEwcwbQaNXrF2WraCeK2W&ms=au&gcr=il&mv=m&sparams=dur,ei,gcr,id,initcwndbps,ip,ipbits,itag,lmt,mime,mm,mn,ms,mv,pcm2cms,pl,ratebypass,requiressl,source,upn,expire&initcwndbps=2657500&signature=BFB25E20CD92AA3B85D115DB878F0BC2E94A1BF4.C36FBD7733D2CAF1E277FF3B625BED432822C012: Server returned 400 Bad Request

  I have no problem accessing the original url through the browser, at the time i ran the program(There is a expired tag in the url,since i’m generating it at runtime).

  I speculate that it’s not possible to connect via https through ip ?
  Is there another way to connect to the url without the hostname, since android does have build in dns resolution, since i am able to view the url through the browser ?

• Merging .flv chunks from stream site

  4 décembre 2016, par Iztooi

  I’m trying to download a video from an alternative version of the Ustream site. This site is apparently used for a DRM protection, in fact you can’t watch this video without having access to it through a login from this site.
  The video system should be the same used by ustream (same links), that is calling different flv chunks every x seconds and merging them into the stream (similar to an rtmp service, but it doesn’t use this protocol).

  I managed to download every .flv chunks composing this video, but i had issues on merging them into a single file. First of all these flvs files have some audio/video lags/problems, but since there is no other way to download this video i’m not complaining about lags.

  The real issue is that every flv file has an additive increase on the duration, despite having a normal size. Video duration is about 6 seconds, so the first chunk is 6 seconds long, the second chunk is 12 seconds long, although only the first 6 are visible (the remaining 6 are "corrupted"). If i try to merge (with ffmpeg or any video-joining software) all these files (about 600-700, for a total duration of 1 hour and 15 minutes) only the first two sections are visible, then I cannot see anything. (Being more clear, if i try to merge the first 2 chunks, file is 18 seconds long and i can see the first 12 ; if i try to merge the first 3 chunks, file is 36 seconds long and i can still only see the first 12 seconds.)

  Anyone has any idea ?