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• ffmpeg fix video orientation

  17 mars 2014, par PiTheNumber

  A video can contain a meta info about the camera orientation. For example iPhone and other phones set this flag if you turn the device. Problem is while some player read this info and rotate the video accordingly, other players do not.

  To fix this the video has to be rotated and the meta info needs to be set correctly.

  Does ffmpeg provide a fix for this or do I have to go the hard way (Read rotation, rotate, set meta data)

• Stream Video from ios device

  29 avril 2014, par iJose

  I have integrated FFmpeg libraries to my project.

  Now

  i want stream a video that is captured using my ios device (iPhone, iPad, iPod)
  to an RTMP server using FFMpeg.

  I did post a similar question and googled for the same but did not end up with any solution.

  Can anyone of you suggest me a tutorial or atleast direct me as i am badly stuck over here and not able to move ahead.

  Kindly Pour your knowledge.

  Thanking you in advance.

• ffmpeg does not copy custom metadata

  20 juin 2015, par e110c0

  I’m trying to fix some videos made with an iDevice. The videos have a rotation in the metadata which is only understood by Apple and its software but noone else. Fixing this is quite simple, but I also would like to keep the other metadata in the files like the geolocation.

  I tried a couple of versions, all with the same result, e.g. :

  ffmpeg -i input.mov -vf vflip,hflip -map_metadata 0 -metadata:s:v:0 rotate=0  -acodec copy output.mp4

  This should work, it already gives the correct preview of metadata :

  ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Feb  8 2013 23:55:22 with Apple clang version 4.0 (tags/Apple/clang-421.0.60) (based on LLVM 3.1svn)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.1.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  
  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 '2013-02-17 00.39.36.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2013-02-16 23:39:25
  
      model           : iPhone 5
  
      model-deu       : iPhone 5
  
      encoder         : 6.1
  
      encoder-deu     : 6.1
  
      date            : 2013-02-17T00:39:25+0100
  
      date-deu        : 2013-02-17T00:39:25+0100
  
      location        : +48.2683+007.7205+172.710/
  
      location-deu    : +48.2683+007.7205+172.710/
  
      make            : Apple
  
      make-deu        : Apple
  
    Duration: 00:00:09.67, start: 0.000000, bitrate: 16764 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 16696 kb/s, 24 fps, 24 tbr, 600 tbn, 1200 tbc
  
      Metadata:
  
        rotate          : 180
  
        creation_time   : 2013-02-16 23:39:25
  
        handler_name    : Core Media Data Handler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 61 kb/s
  
      Metadata:
  
        creation_time   : 2013-02-16 23:39:25
  
        handler_name    : Core Media Data Handler
  
  w:1920 h:1080 pixfmt:yuv420p tb:1/600 fr:24/1 sar:0/1 sws_param:flags=2
  
  [libx264 @ 0x7fc248829a00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x7fc248829a00] profile High, level 4.0
  
  [libx264 @ 0x7fc248829a00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  
  
  Output #0, mp4, to 'output.mp4':
  
  Metadata:
  
    major_brand     : qt  
  
    minor_version   : 0
  
    compatible_brands: qt  
  
    creation_time   : 2013-02-16 23:39:25
  
    model           : iPhone 5
  
    model-deu       : iPhone 5
  
    encoder-deu     : 6.1
  
    date            : 2013-02-17T00:39:25+0100
  
    date-deu        : 2013-02-17T00:39:25+0100
  
    location        : +48.2683+007.7205+172.710/
  
    location-deu    : +48.2683+007.7205+172.710/
  
    make            : Apple
  
    make-deu        : Apple
  
    encoder         : Lavf54.59.106
  
  Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080, q=-1--1, 12288 tbn, 24 tbc
  
  Metadata:
  
    handler_name    : Core Media Data Handler
  
    creation_time   : 2013-02-16 23:39:25
  
    rotate          : 0
  
  Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, 61 kb/s
  
  Metadata:
  
    creation_time   : 2013-02-16 23:39:25
  
    handler_name    : Core Media Data Handler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (copy)

  But the resulting file keeps only some of these metadata tags :

  ffmpeg -i output.mp4

  shows :

  fmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Feb  8 2013 23:55:22 with Apple clang version 4.0 (tags/Apple/clang-421.0.60) (based on LLVM 3.1svn)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.1.2 --enable-shared --enable-pthreads -  -enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  
  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 'test.mp4':
  
  Metadata:
  
    major_brand     : isom
  
    minor_version   : 512
  
    compatible_brands: isomiso2mp41
  
    creation_time   : 2013-02-16 23:39:25
  
    date            : 2013-02-17T00:39:25+0100
  
    encoder         : Lavf54.59.106
  
  Duration: 00:00:09.67, start: 0.000000, bitrate: 3286 kb/s
  
    Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 3219 kb/s, 24 fps, 24 tbr, 12288 tbn, 24 tbc
  
    Metadata:
  
      creation_time   : 2013-02-16 23:39:25
  
      handler_name    : VideoHandler
  
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 61 kb/s
  
    Metadata:
  
      creation_time   : 2013-02-16 23:39:25
  
      handler_name    : SoundHandler

  I also tried to add the one tag I’m interested in by hand with

  -metadata:g location=+48.2683+007.7205+172.710/

  with no change in the result.

  Output as .mov doesn’t change anything, neither.

  Is there any trick to add non-standard metadata ? How do I get the location back in there ?

  Thanks in advance to anyone who can give some insight on this.