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• FFMPEG integration on iphone/ ipad project

  12 avril 2020, par Chandramani

  Can any One Tell me how do i integrate FFMPEG in my iphone/ ipad project.i m using Xcode 4.
i searched a lot but did not find any useful Link .please tell me step by step procedure to integrate FFMpeg in my project.

  



  thanks,

  


• web recorded video not played in ipad

  30 juin 2015, par ketan

  I record video from web using flash media server. Now using flex default player i tried to play video but, it will not play ipad.(ios device)
  I checked that video codec and it is something like following :

  libxavs --enable-libxvid --enable-decklink --enable-zlib
  
    libavutil      52. 92.100 / 52. 92.100
  
    libavcodec     55. 69.100 / 55. 69.100
  
    libavformat    55. 45.100 / 55. 45.100
  
    libavdevice    55. 13.102 / 55. 13.102
  
    libavfilter     4. 10.100 /  4. 10.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [flv @ 0000000002b60220] Stream discovered after head already parsed
  
  Input #0, flv, from 'C:\Users\Administrator\Desktop\123654789.flv':
  
    Metadata:
  
      canSeekToEnd    : false
  
      createdby       : FMS 4.5
  
      creationdate    : Tue Jun 30 16:27:22 2015
  
    Duration: 00:00:15.25, start: 0.000000, bitrate: 52 kb/s
  
      Stream #0:0: Video: flv1, yuv420p, 320x227, 1k tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: speex, 16000 Hz, mono, s16, 20 kb/s
  
      Stream #0:2: Data: none

  I record video following ways :

  netstream.publish("FILENAME","record");

  Thanks.

  Edit :

  Another flv file i got which is played in ios. But when i check it’s codec it something like following :

  r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
  
  -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
  
  libxavs --enable-libxvid --enable-decklink --enable-zlib
  
    libavutil      52. 92.100 / 52. 92.100
  
    libavcodec     55. 69.100 / 55. 69.100
  
    libavformat    55. 45.100 / 55. 45.100
  
    libavdevice    55. 13.102 / 55. 13.102
  
    libavfilter     4. 10.100 /  4. 10.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, flv, from 'C:\Users\Administrator\Desktop\16402.flv':
  
    Metadata:
  
      major_brand     : 3gp4
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      encoder         : Lavf55.45.100
  
    Duration: 00:00:13.23, start: 0.000000, bitrate: 304 kb/s
  
      Stream #0:0: Video: flv1, yuv420p, 320x240, 300 kb/s, 15 fps, 15 tbr, 1k tbn
  
  , 1k tbc
  
      Stream #0:1: Audio: mp3, 22050 Hz, mono, s16p, 0 kb/s

  How, can i record/convert flv like below ?

• How to play mp4 video file with HTML5 video tag on iOS (iPhone and iPad) ?

  22 avril 2015, par Mokielas

  I want to display HTML5 video to my users using the video tag. For Firefox, Chrome and Opera WEBM works as expected. In Safari on Windows and Mac my MP4 version works, too. The only problem I’m experiencing is, that it won’t play on iPad and iPhone (Safari of course).

  Create video

  The MP4 (h.264 + acc-lc) is converted like this (with profile : baseline and level 3.0 for maximum compatibility with iOS) :

  • Stream #0:0(eng) : Video : h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x352, 198 kb/s, 17 fps, 17 tbr, 17408 tbn, 34 tbc (default)
  • Stream #0:1(eng) : Audio : aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 56 kb/s (default)

  Edit : Whole ffprobe output (slight changes in bitrate etc. to the above mentioned) :

  Metadata:
  
  major_brand     : isom
  
  minor_version   : 512
  
  compatible_brands: isomiso2avc1mp41
  
  encoder         : Lavf56.30.100
  
  Duration: 00:01:00.05, start: 0.046440, bitrate: 289 kb/s
  
  Stream #0:0(eng): Video: h264 (Constrained Baseline) 
  
  (avc1 /0x31637661), yuv420p, 640x352, 198 kb/s, 25 fps, 25 tbr, 
  
  12800 tbn, 50 tbc (default)
  
  Metadata:
  
    handler_name    : VideoHandler
  
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, 
  
  stereo, fltp, 85 kb/s (default)
  
  Metadata:
  
    handler_name    : SoundHandler

  I found various requirements for iOS devices like this and this, also someone mentioned to add the yuv420p pixel format when converting.

  In fact the ffmpeg cmd looks like this :

  ffmpeg -i __inputfile__ -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -level 3.0 -b:v 200K -r 17 -bt 800K -c:a libfdk_aac -b:a 85k -ar 44100 -y __outputfile_lowversion__.mp4

  Display video

  With Modernizr I detect which format is "supported" and add it to the src or the video tag. Last thing is adding the right MIME type. For mp4 I add type="video/mp4". The full code for the video tag is :

  <video class="p-video" preload="auto" autoplay="" type="video/mp4" src="http://full.url/to/video_low.mp4"></video>

  I tried various ways : own implementation with own interface, controls and stuff from browser vendors and video.js just to check whether i’m too studip for this. All work in the environments listed above except for iPhone and iPad.

  I read this article on Video on the web, especially this part and only serve the "right" file with the "right" type without a posterattribute set.

  My Apache has

  AddType video/mp4                      mp4 m4v f4v f4p
  
  AddType video/ogg                      ogv
  
  AddType video/webm                     webm

  And byte-ranges are enabled. This is needed to get partial content from the server.

  Has anyone a clue what’s going on there ? Thanks in advance !

  Edit : Safari and Chrome both throw MEDIA_ERR_SRC_NOT_SUPPORTED Error on iPad. There must be an issue with the encoding.