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• FFMPEG change bitrate only

  8 mars 2014, par Palejandro

  I have .ts file with corrupted, lets call it, metadata. Bitrate value is 0, so mediaplayer cannot play that file. Rest of the file is fine (If I convert it, for example, into mp4 it can be played with no problem)but I dont want to convert it, I only need to modify bitrate value. I tried to modify it, but I had to copy that file, and it took much time. I dont want to modify fps,resolution,format,etc.., I only need to "rewrite" bitrate value. Is it possible ?

  this is what I've tried so far (different variations) :

  "-i", inputFile, 
  
      "-b", "1500k", 
  
  //  "-minrate", "1200k", 
  
  //  "-maxrate", "2000k",
  
  //  "-bufsize", "12000k",
  
  //  "-ab", "64k", 
  
      "-vcodec", "libx264", 
  
  //"-acodec", "aac", "-strict", "-2", 
  
  //  "-ac", "2", 
  
  //  "-ar", "44100", 
  
  //  "-s", "1280x720", 
  
  //  "-y",
  
     "-f", format,
  
  outputFile

• Video Surveliance application by connecting DVR

  14 mai 2014, par iMOBDEV

  I am trying to connect to the DVR so that I can view video recording on my IOS device, I tried to search a lot but could not find a single useful link to move ahead with connecting to the DVR. I found that, it can be done using FFMPEG, but could not be able to do what to do and how to do.

  What I need to do is : connect to the IP address and port where the DVR is configured, give username and password for that DVR to connect to the DVR. Something like following link :

  https://itunes.apple.com/en/app/vmeye/id365532547?mt=8

  Guide me with useful links to move ahead with connecting to the DVR.

• iPAD Streaming video to a ffmpeg server. front facing camera

  6 décembre 2011, par IrishGringo

  This is a video chat type program.
  My project is to write a native ObjC app that will stream video from the front facing camera to a server. This server will format and relay to be sent to another location.
  In a related question, I want to display video streaming from the server. The video server will probably be running ffmpeg for formating.
  But this question is just asking advice for the iPAD project. I wanted to get comments about issues I need to be thinking about.

  This is my strategy :
  I was thinking of using AVFoundation framework to stream from the cam to a URL server. I don't know if I will be formatting on the client or no, so some comment there would be interesting. http://developer.apple.com/library/mac/#documentation/AVFoundation/Reference/AVFoundationFramework/_index.html

  For streaming the video, I was going to be using :
  http://developer.apple.com/library/IOs/#documentation/AVFoundation/Reference/AVCaptureSession_Class/Reference/Reference.html#//apple_ref/occ/cl/AVCaptureSession

  so if someone has some ideas/suggestions... extra code I can look at. I would appreciate it.