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• Live Video Chat for iPhone and HTTP Live Streaming

  14 janvier 2024, par mayuur

  I want to make an app which has video chat functionality for iPhone. But after many searches, I am still not able to find any successful results. Is there any public or even for that matter, private API available for doing this on iPhone ? If you have an YES answer, please help me.

  


  Basically, what I want is to read the streams of the video on both the devices connected for chatting. Please help me if you can.

  


  p.s - I have already checked iDoubs but it failed and always shows some unknown problem and for that reason, doesn't allow me to connect to anyone.

  


  ALSO : The suggested method I have found is via HTTP Live Streaming. But, in that too, I have multiple doubts.

  


  1.) I need to find how do I upload my video from iPhone to the HTTP server from where I would be broadcasting ?

  


  2.) Can you please post something related to setting up the server ? How do I feed the video to the FFMPEG Server ?

  


  Mainly, I need to find the upload method. I am right now simply sending hex-code in the form of NSDATA to the server and I am stuck there. The main problem is, It is live. How do I handle that ?

  


  It would be best, if you could help me make the iDoubs work properly.

  


• FFmpeg on iPhone - Modifying Video Orientation

  6 avril 2015, par Matthew McGoogan

  I’m messing with h264 videos loaded with FFmpeg on the iPhone 3GS. The problem is any videos recorded in "Portrait" orientation have a transformation matrix applied to them causing them to display rotated 90 degrees counter-clock.

  From what I understand thus far, I just need to modify the transform matrix in the ’tkhd’ atom. The problem is I am having trouble accessing or modifying this data. I checked out the FFmpeg implementation for :

  static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)

  which clearly shows how the matrix is accessed in avformat but when I try to access the header bytes using the same functions I am not getting any rational values. Even if I were to successfully pull the matrix I’m not sure how to replace it ? FFmpeg has functions for retrieving and appending to the track header but nothing for replace it seems ?

  Any help would be greatly appreciated.

  Thanks,
  Matt.

• Anomalie #3452 (Nouveau) : L’image jointe à un message de forum n’est pas prise en charge (bug SPI...

  18 mai 2015, par Pascal Verrier

  Bonjour,

  Depuis la MAJ toute récente de SPIP 3.0.19 je constate que l’image jointe à un message de forum n’est plus affichée après enregistrement du message.

  Le document est cependant bien créé dans la médiathèque mais n’est plus associé au forum.

  J’ai identifié le code responsable, dans plugins-dist/medias/action/editer_document.php lignes 260 à 267 : il s’agit d’un ajout depuis la 3.0.17 (ajout du même type également quelques lignes plus haut L252 avec "dissocierdocuments") :

     // verifier les droits d'associer<br />    foreach($objets_parents as $objet=>$ids){<br />        foreach($ids as $k=>$id){<br />            if (!autoriser('associerdocuments',$objet,$id)){<br />                unset($objets_parents[$objet][$k]);<br />            }<br />        }<br />    }<br />

  L’utilisateur courant devrait donc avoir le droit "associerdocuments" pour que l’image soit associée au forum. Or je suis connecté en tant que webmestre. Notez que par ailleurs notre forum peut également être utilisé par des "visiteurs" qui peuvent également joindre des images.

  En supprimant ce code l’image est de nouveau prise en charge normalement.