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• Using FFMPEG library with iPhone SDK for video encoding

  21 juin 2015, par user203349

  I need to encode several pictures shot by the iphone camera into a mp4 video file and I know FFMPEG can do this (the application TimeLapser and ReelMoments do it already). I plan to use this in my app iMotion (available in the appstore).

  I successfully install and compile the ffmpeg for the iphone SDK with this link :
  http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-October/076618.html

  But now I’m stuck here in my XCode project. What should I do next to use the FFMPEG library for video encoding ? The Apple documentation about external library using is very light and I just can find any tutorial on the web wich explain how to do this.

  If anybody can help me, I would be very grateful..`

  Thanks

  Aurelien Potier

• FFMPEG pushed RTMP stream not working on Android & iPhone

  1er décembre 2015, par BlackDivine

  I have to make a semi-live-stream. I used Nginx-rtmp module and then pushed content to it via ffmpeg using :

  ffmpeg -re -i content.mp4 -r 25 -f fvl "rtmp://rtmp.server.here"

  The stream runs fine when I open it in VLC from "rtmp ://rtmp.server.here"

  But I also have to make iPhone and Android apps that play these streams. And that’s the problem, the stream doesn’t work on Android and iPhone.

  If I use Wowza streaming cloud and stream to Wowza cloud instead of my own nginx-rtmp server then the same app written for Android & iPhone can playback the stream just fine.

  Now either nginx-rtmp is not working right, or what else ? I’ve also tried crtmpserver and the same thing happens.

  What I want to acheive :
  I have to develop a system where we can upstream a TV-Channel (have rights for it) to a server and then make a website, android app & iPhone app so consumers can watch the live channel.

  The uploading part I have a clue of, probably a TV tuner card and Open Broadcast Software to stream it to server. But the Live playback is new to me.

  ---

  UPDATE : I also used ffprobe and here’s the output. (See the last line)

  munir@munir-HP-ProBook-450-G2:~$ ffprobe rtmp://rtmp.server.here
  
  ffprobe version 2.6.2 Copyright (c) 2007-2015 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
  
    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [flv @ 0x267cc60] Stream discovered after head already parsed
  
      Last message repeated 1 times
  
  Input #0, flv, from 'rtmp://stage.funworldpk.com/live':
  
    Metadata:
  
      Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
      displayWidth    : 320
  
      displayHeight   : 240
  
      fps             : 20
  
      profile         : 
  
      level           : 
  
    Duration: 00:00:00.00, start: 288.763000, bitrate: N/A
  
      Stream #0:0: Video: h264 (High), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 20 fps, 20 tbr, 1k tbn, 40 tbc
  
      Stream #0:1: Data: none
  
      Stream #0:2: Audio: aac (LC), 22050 Hz, stereo, fltp
  
  Unsupported codec with id 0 for input stream 1

  Update 2 :
  I got my stream working by using Licensed copy of Wowza streaming server. Everything works now. But obviously this will not be an option for everyone that’s why I am not posting it as an answer.

• Android and iPhone compatible mp4 format using ffmpeg

  23 mai 2015, par Muhammad Umar

  I have two video files, their metatdata and details are as below

  ANDROID
  
  
  
        Metadata:
  
          major_brand     : isom
  
          minor_version   : 512
  
          compatible_brands: isomiso2avc1mp41
  
          encoder         : Lavf55.19.104
  
        Duration: 00:00:04.74, start: 0.046440, bitrate: 696 kb/s
  
          Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 480x480, 665 kb/s, 15 fps, 15 tbr, 15360 tbn, 30 tbc (default)
  
          Metadata:
  
            handler_name    : VideoHandler
  
          Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 64 kb/s (default)
  
          Metadata:
  
            handler_name    : SoundHandler
  
  
  
      IPHONE
  
  
  
        Metadata:
  
          major_brand     : mp42
  
          minor_version   : 1
  
          compatible_brands: mp41mp42isom
  
          creation_time   : 2015-05-23 05:59:42
  
        Duration: 00:00:02.10, start: 0.000000, bitrate: 1109 kb/s
  
          Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt709/bt709), 320x320, 1053 kb/s, 24.19 fps, 30 tbr, 30 tbn, 60 tbc (default)
  
          Metadata:
  
            creation_time   : 2015-05-23 05:59:42
  
            handler_name    : Core Media Video
  
          Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 61 kb/s (default)
  
          Metadata:
  
            creation_time   : 2015-05-23 05:59:42
  
            handler_name    : Core Media Audio

  The iPhone version is NOT running in android VideoView. Which settings should i change to make it compatible with Android VideoView