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• Installing libmp3lame to work with FFMPEG on raspberry pi

  13 octobre 2016, par Gloin

  I am using the moviepy module with python 3.2 on my RPi 2. It uses FFMPEG to read and write the video, so I installed FFMPEG using these instructions to the letter. Now when I run the program, it says that my video export failed because FFMPEG didn’t find the libmp3lame codec that it needs. How do I got about installing the libmp3lame codec onto my RPi 2 (running Raspian Wheezy) ?

  I think I have to reinstall FFMPEG to install the codec.. how do I do that correctly ?

• Detect rotation angle and rotate final video using ffmpeg version 2.8

  3 février 2016, par Hemant Kumar

  I used to work on ffmpeg 2.2 until now and was detecting rotation angle of video uploaded from android / iPhone mobiles and rotate the resulting video so that it run perfectly on a correct angle.

  But since I have updated the ffmpeg to version 2.8 I am getting this rotation problem. My queries are not rotating the videos as they were earlier.

  Here’r the commands I was using :

  To check rotation angle :

  ffprobe -of json -show_streams {$input} | grep rotate

  below is my final command to convert a video to mp4

  "ffmpeg -i {$input} -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ".fix_video_orientation($input)."' -threads 0 -ab 64k -s {$resolution}  -movflags faststart -metadata:s:v:0 rotate=0 {$output}";

  "fix_video_orientation" function is given below. It detect the angle of rotation of the initial video and output optimal option for rotating the final video.

  function fix_video_orientation($input){
  
  
  
  $return= ", transpose=1 ";
  
  
  
  $dd= exec("ffprobe -of json -show_streams  {$input}   | grep rotate");
  
  
  
  if(!empty($dd)){
  
  
  
  $dd=explode(":",$dd);
  
  $rotate=str_replace(",","",str_replace('"',"",$dd[1]));
  
  
  
  if($rotate=="90")return $return;
  
  
  
  else if ($rotate=="180") return ", transpose=2,transpose=2 ";
  
  
  
  else if($rotate == "270") return ", transpose=2 ";
  
  }

  Currently above script is supporting "flv","avi","mp4","mkv","mpg","wmv","asf","webm","mov","3gp","3gpp" extensions, also the script is supporting the resulting .mp4 file to play on all browsers and devices.

  Now the ffprobe command is not returning rotation angle and so a portrait video if uploaded from iphone is showing as landscape on the website.

  Output console of ffprobe command :

  ffprobe version N-77455-g4707497 Copyright (c) 2007-2015 the FFmpeg developers
  
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --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-libdcadec --enable-libfreetype --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 55. 11.100 / 55. 11.100
  
  libavcodec 57. 20.100 / 57. 20.100
  
  libavformat 57. 20.100 / 57. 20.100
  
  libavdevice 57. 0.100 / 57. 0.100
  
  libavfilter 6. 21.101 / 6. 21.101
  
  libavresample 3. 0. 0 / 3. 0. 0
  
  libswscale 4. 0.100 / 4. 0.100
  
  libswresample 2. 0.101 / 2. 0.101
  
  libpostproc 54. 0.100 / 54. 0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/standard/PORTRAIT.m4v':
  
  Metadata:
  
  major_brand : qt
  
  
  
  minor_version : 0
  
  compatible_brands: qt
  
  
  
  creation_time : 2016-02-03 05:25:18
  
  com.apple.quicktime.make: Apple
  
  com.apple.quicktime.model: iPhone 4S
  
  com.apple.quicktime.software: 9.2.1
  
  com.apple.quicktime.creationdate: 2016-02-03T10:52:11+0530
  
  Duration: 00:00:03.34, start: 0.000000, bitrate: 7910 kb/s
  
  Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
  
  Metadata:
  
  creation_time : 2016-02-03 05:25:18
  
  handler_name : Core Media Data Handler
  
  Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 720x1280 [SAR 1:1 DAR 9:16], 7832 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 50 tbc (default)
  
  Metadata:
  
  creation_time : 2016-02-03 05:25:18
  
  handler_name : Core Media Data Handler
  
  encoder : H.264
  
  Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
  
  Metadata:
  
  creation_time : 2016-02-03 05:25:18
  
  handler_name : Core Media Data Handler
  
  Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
  
  Metadata:
  
  creation_time : 2016-02-03 05:25:18
  
  handler_name : Core Media Data Handler
  
  Unsupported codec with id 0 for input stream 2
  
  Unsupported codec with id 0 for input stream 3

  If latest version of ffmpeg (2.8) is used to auto rotate the video, can you please suggest me what option I need to add or remove from my final command.

• ffmpeg : Invalid argument, [NULL @ 0x22e2240] Unable to find a suitable output format for 'ffmpeg'

  14 février 2016, par user3788285

  I am trying to convert video from images wit the music in background

  command is working fine in the terminal but while using into php it’s giving error :

  this is the command i am trying :

  /usr/local/bin/ffmpeg ffmpeg -framerate 1/5 -i image%01d.png -i song.mp3 -c:v libx264 -c:a aac -strict experimental -b:a 192k  -r 30 -pix_fmt yuv420p -t 10 output.mp4 2>&1
  
  
  
  array(21) {
  
  
  
    [0]=>
  
    string(83) "ffmpeg version git-2016-02-13-588e2e3 Copyright (c) 2000-2016 the FFmpeg developers"
  
  
  
    [1]=>
  
    string(56) "  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)"
  
  
  
    [2]=>
  
    string(369) "  configuration: --enable-shared --extra-libs=-ldl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --disable-ffplay --enable-gpl --enable-postproc --enable-nonfree --enable-avfilter --enable-pthreads --extra-cflags=-fPIC"
  
  
  
    [3]=>
  
    string(40) "  libavutil      55. 17.100 / 55. 17.100"
  
  
  
    [4]=>
  
    string(40) "  libavcodec     57. 24.102 / 57. 24.102"
  
  
  
    [5]=>
  
    string(40) "  libavformat    57. 25.100 / 57. 25.100"
  
  
  
    [6]=>
  
    string(40) "  libavdevice    57.  0.101 / 57.  0.101"
  
  
  
    [7]=>
  
    string(40) "  libavfilter     6. 31.100 /  6. 31.100"
  
  
  
    [8]=>
  
    string(40) "  libswscale      4.  0.100 /  4.  0.100"
  
  
  
    [9]=>
  
    string(40) "  libswresample   2.  0.101 /  2.  0.101"
  
  
  
    [10]=>
  
    string(40) "  libpostproc    54.  0.100 / 54.  0.100"
  
  
  
    [11]=>
  
    string(39) "Input #0, image2, from 'image%01d.png':"
  
  
  
    [12]=>
  
    string(54) "  Duration: 00:00:10.00, start: 0.000000, bitrate: N/A"
  
  
  
    [13]=>
  
    string(101) "    Stream #0:0: Video: png, gray(pc), 1080x494 [SAR 72:72 DAR 540:247], 0.20 tbr, 0.20 tbn, 0.20 tbc"
  
  
  
    [14]=>
  
    string(48) "[mp3 @ 0x22dfb00] Skipping 0 bytes of junk at 0."
  
  
  
    [15]=>
  
    string(74) "[mp3 @ 0x22dfb00] Estimating duration from bitrate, this may be inaccurate"
  
  
  
    [16]=>
  
    string(31) "Input #1, mp3, from 'song.mp3':"
  
  
  
    [17]=>
  
    string(59) "  Duration: 00:01:45.80, start: 0.000000, bitrate: 127 kb/s"
  
  
  
    [18]=>
  
    string(61) "    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s"
  
  
  
    [19]=>
  
    string(71) "[NULL @ 0x22e2240] Unable to find a suitable output format for 'ffmpeg'"
  
  
  
    [20]=>
  
    string(24) "ffmpeg: Invalid argument"
  
  
  
  }
  
  int(1)