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• How to use ffmpeg for muxing steam into mp4 file and saving to iOS photo galllery

  25 juin 2015, par ChihHao

  I am trying to mux a live stream into a mp4 file by using FFmpeg on iOS. After the muxing, how should I save this mp4 file into my iOS photo gallery ?

  My mp4 file path is something like this : file:///var/mobile/Containers/Data/Application/560F1377-D16D-4322-8CBC-C6F521BA326D/Documents/temp.mp4

  I use : videoAtPathIsCompatibleWithSavedPhotosAlbum to make sure this is the right format file that can be saved into iOS photo gallery, but it’s always return No.

  Any comment will be appreciated !

• JW Player can't play mp4 video downloaded from youtube

  20 janvier 2015, par kheya

  I have doenloaded am mp4 video using IE Realplayer plugin from youtube.
  https://www.youtube.com/watch?v=e3a80c5Ar3Y

  I have a test site on my local machine where I have HTML5 JW Player.

  I download the video and then play locally using realplay to see if it plays.
  I notice that not all mp4 downloads from youtube plays in Realplayer.
  The ones that play in Realplayer also play in JW Player on local website.
  But the mp4 files that don’t play in Realplayer also don’t play in JW player.

  This is the error I get in the player :
  the video playback was aborted due to a corruption problem or because the video used features your browser didnot support mylocalsite/xyz.mp4 undefined

  I tested IE, FF, Chrome. It works nowhere.

  Here is my jw player setup and html :

  <video src="mylocalsite/test.mp4" type="video/mp4" poster="mylocalsite/test.jpg" width="640" height="360"></video>

  player setup :

  var modes = '';
  
  var swfPath = '/content/jw/player.swf';
  
              if (navigator.userAgent.toLowerCase().match(/(android)/) || navigator.userAgent.toLowerCase().match(/(chrom)/)) {                
  
                  modes = [{ type: 'flash', src: swfPath }, { type: "html5"}];
  
              } else {
  
                  modes = [{ type: 'html5' }, { type: 'flash', src: swfPath }, { type: "download"}];
  
              }
  
  
  
  jwplayer('container').setup({                
  
                  'flashplayer': swfPath,                
  
                  'width': '640',
  
                  'height': '360',
  
                  'provider': 'video',
  
                  'modes': modes,                
  
              });

  Here is the details info about the file returned by ffmpeg :

  ffmpeg version 1.1.4 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jul 31 2013 02:49:36 with gcc 4.6.2 (GCC)
  
    configuration: --prefix=/c/Users/Administrator/ffmpeg --extra-cflags=-I/c/User
  
  s/Administrator/ffmpeg/include --extra-ldflags=-L/c/Users/Administrator/ffmpeg/l
  
  ib --cpu=i686 --enable-gpl --enable-libfdk-aac --enable-libx264 --enable-nonfree
  
  
  
    libavutil      52. 13.100 / 52. 13.100
  
    libavcodec     54. 86.100 / 54. 86.100
  
    libavformat    54. 59.106 / 54. 59.106
  
    libavdevice    54.  3.102 / 54.  3.102
  
    libavfilter     3. 32.100 /  3. 32.100
  
    libswscale      2.  1.103 /  2.  1.103
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\videos\woh.mp4':
  
    Metadata:
  
      major_brand     : dash
  
      minor_version   : 0
  
      compatible_brands: iso6avc1mp41
  
      creation_time   : 2013-09-08 23:34:28
  
    Duration: 00:03:50.96, start: 0.000000, bitrate: 189 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 480x360,
  
  187 kb/s, 25 tbr, 90k tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 2013-09-08 23:34:28
  
        handler_name    : VideoHandler

  What can be causing this issue ?

• FFMPEG : On Upload To Youtube The Video Starts At 0:06 (Shorter Than Original)

  9 novembre 2013, par mashup

  I uploaded a video MP4 to Youtube which was created by FFMPEG

  Unfortunately, all videos seem to be shorter than the original. I read all sorts of stuff about an moov atom and Youtube being unreliable, but I did not find the actual cause

  MP4 is supposed to be the preferred file format :
  https://support.google.com/youtube/answer/1722171?hl=en

  THE FILZE : Less Than 1MB ! Original Length : 24 seconds, Once Uploaded : 18 seconds