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  • How to deal with "Buffer queue overflow, dropping." (ffmpeg)

    1er mai 2015, par whitesiroi

    Sometimes it works great and sometimes I’m getting this message
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.

    by running this command
    ffmpeg -i a1.mp4 -i watermark150x125.png -filter_complex 'overlay=10:10' output.mp4

    I tried different variation of "overlay" like overlay=W-w-5:H-h-5, overlay=10:main_h-overlay_h-10, overlay=main_w-overlay_w-10:main_h-overlay_h-10 - getting the same result.

    Here is the output of the ffmpeg command.

    ffmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
     built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
     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
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f952101d200] stream 0, timescale not set
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a1.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       artist          : a1
       album           :
       comment         :
       date            : 0
       genre           :
       title           : a1
       encoder         : Lavf56.4.101
     Duration: 00:01:41.51, start: 0.000000, bitrate: 227 kb/s
       Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 97 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
       Metadata:
         handler_name    : VideoHandler
       Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
       Metadata:
         handler_name    : SoundHandler
       Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 120x90 [SAR 1:1 DAR 4:3], 90k tbr, 90k tbn, 90k tbc
    Input #1, png_pipe, from 'watermark150x125.png':
     Duration: N/A, bitrate: N/A
       Stream #1:0: Video: png, rgba, 150x125 [SAR 2835:2835 DAR 6:5], 25 tbr, 25 tbn, 25 tbc
    [swscaler @ 0x7f9521013e00] deprecated pixel format used, make sure you did set range correctly
    [libx264 @ 0x7f9521030e00] using SAR=1/1
    [libx264 @ 0x7f9521030e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    [libx264 @ 0x7f9521030e00] profile High, level 2.1
    [libx264 @ 0x7f9521030e00] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=25 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     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       artist          : a1
       album           :
       comment         :
       date            : 0
       genre           :
       title           : a1
       encoder         : Lavf56.25.101
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 426x240 [SAR 1:1 DAR 71:40], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
       Metadata:
         encoder         : Lavc56.26.100 libx264
       Stream #0:1(und): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
       Metadata:
         handler_name    : SoundHandler
         encoder         : Lavc56.26.100 libvo_aacenc
    Stream mapping:
     Stream #0:0 (h264) -> overlay:main (graph 0)
     Stream #0:2 (mjpeg) -> overlay:overlay (graph 0)
     overlay (graph 0) -> Stream #0:0 (libx264)
     Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
    Press [q] to stop, [?] for help
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
       Last message repeated 385 times
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
       Last message repeated 564 times
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
       Last message repeated 546 times
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
       Last message repeated 569 times
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
       Last message repeated 593 times
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
       Last message repeated 312 times
    frame= 3041 fps=645 q=-1.0 Lsize=    1800kB time=00:01:41.52 bitrate= 145.3kbits/s dup=2975 drop=0
    video:149kB audio:1587kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.700745%
    [libx264 @ 0x7f9521030e00] frame I:14    Avg QP:19.91  size:  6947
    [libx264 @ 0x7f9521030e00] frame P:768   Avg QP:10.30  size:    27
    [libx264 @ 0x7f9521030e00] frame B:2259  Avg QP:13.67  size:    15
    [libx264 @ 0x7f9521030e00] consecutive B-frames:  0.9%  0.1%  0.1% 98.9%
    [libx264 @ 0x7f9521030e00] mb I  I16..4: 18.7% 59.0% 22.3%
    [libx264 @ 0x7f9521030e00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.9%
    [libx264 @ 0x7f9521030e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%  0.0%  direct: 0.0%  skip:99.9%  L0:50.7% L1:49.3% BI: 0.0%
    [libx264 @ 0x7f9521030e00] 8x8 transform intra:59.1% inter:31.9%
    [libx264 @ 0x7f9521030e00] coded y,uvDC,uvAC intra: 21.4% 12.4% 7.4% inter: 0.0% 0.0% 0.0%
    [libx264 @ 0x7f9521030e00] i16 v,h,dc,p: 39% 30% 30%  0%
    [libx264 @ 0x7f9521030e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 47% 16%  1%  0%  0%  1%  0%  1%
    [libx264 @ 0x7f9521030e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 38% 15%  3%  3%  3%  6%  4%  7%
    [libx264 @ 0x7f9521030e00] i8c dc,h,v,p: 80% 15%  4%  1%
    [libx264 @ 0x7f9521030e00] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x7f9521030e00] ref P L0: 96.5%  1.2%  2.3%
    [libx264 @ 0x7f9521030e00] ref B L0: 51.5% 48.5%
    [libx264 @ 0x7f9521030e00] ref B L1: 99.6%  0.4%
    [libx264 @ 0x7f9521030e00] kb/s:11.97
  • ffmpeg : Command Execution failed

    29 janvier 2019, par PRABHJOT SINGH

    I am using this plugin plugin link and I am uploading mp4 videos and trying to compress the video on the server using node js FFmpeg module

    var vid = new ffmpeg( './' + req.file_name + '.mp4');
    vid.then(function (video) {
       video.setVideoSize('640x?', true, true)
           .save('./' + req.file_name + '_cp.mp4',
               function (err,file) {
                   if(err) {
                       res.send({status: 404, message: 'Unable to save video' })
                   } else {
                       revealCtrl.GetVideoData(req, res, next);
                   }
               })
    }, function (err) { });

    but it is not compressing my video and gives this error

    Here is the final command

    Command failed: ffmpeg -i ./jrbze37i.mp4  -strict -2  -filter_complex "scale=iw*sar:ih, pad=max(iw\,ih*(16/9)):ow/(16/9):(ow                                                                                                        -iw)/2:(oh-ih)/2" ./jrbze37i_cp.mp4

    and here is the error

    Error: Command failed: ffmpeg -i ./jrbze37i.mp4  -strict -2  -filter_complex "scale=iw*sar:ih, pad=max(iw\,ih*(16/9)):ow/(16/9):(ow                                                                                                        -iw)/2:(oh-ih)/2" ./jrbze37i_cp.mp4
    ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg
    developers
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
    configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-
    suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-                                                                                                        
    linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --
    enable-gpl --enable-shared --disable-stripping --disable-decoder                                                                                                        
    =libopenjpeg --disable-decoder=libschroedinger --enable-avresample --
    enable-avisynth --enable-gnutls --enable-ladspa --enable-libass                                                                                                        
    --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --
    enable-libflite --enable-libfontconfig --enable-libfreetype -                                                                                                        
    -enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --
    enable-libmp3lame --enable-libopenjpeg --enable-libopus --en                                                                                                        
    able-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine
    --enable-libsnappy --enable-libsoxr --enable-libspeex --ena                                                                                                        
    ble-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --
    enable-libvpx --enable-libwavpack --enable-libwebp --enable-li                                                                                                        
    bx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --
    enable-x11grab --enable-libdc1394 --enable-libiec61883 --en                                                                                                        
    able-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    libavutil      54. 31.100 / 54. 31.100
    libavcodec     56. 60.100 / 56. 60.100
    libavformat    56. 40.101 / 56. 40.101
    libavdevice    56.  4.100 / 56.  4.100
    libavfilter     5. 40.101 /  5. 40.101
    libavresample   2.  1.  0 /  2.  1.  0
    libswscale      3.  1.101 /  3.  1.101
    libswresample   1.  2.101 /  1.  2.101
    libpostproc    53.  3.100 / 53.  3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './jrbze37i.mp4':
    Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.26.100
    Duration: 00:00:53.22, start: 0.023220, bitrate: 1553 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661),
    yuv420p, 1920x1080, 1418 kb/s, 30 fps, 30 tbr, 15360 tb                                                                                                        
    n, 60 tbc (default)
    Metadata:
     handler_name    : Core Media Video
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono,
    fltp, 128 kb/s (default)
    Metadata:
     handler_name    : Core Media Audio
    [libx264 @ 0x1567760] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    AVX FMA3 AVX2 LZCNT BMI2
    [libx264 @ 0x1567760] profile High, level 4.0
    [libx264 @ 0x1567760] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC
    codec - Copyleft 2003-2015 - 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 tr                                                                                                        
    ellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2
    threads=1 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 ke                                                                                                        
    yint=250 keyint_min=25 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_r                                                                                                        
    atio=1.40 aq=1:1.00
    Output #0, mp4, to './jrbze37i_cp.mp4':
     Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf56.40.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p,
      1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
     encoder         : Lavc56.60.100 libx264
    Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono,
    fltp, 128 kb/s (default)
    Metadata:
     handler_name    : Core Media Audio
     encoder         : Lavc56.60.100 aac
    Stream mapping:
      Stream #0:0 (h264) -> scale (graph 0)
      pad (graph 0) -> Stream #0:0 (libx264)
      Stream #0:1 -> #0:1 (aac (native) -> aac (native))
      Press [q] to stop, [?] for help
      Killed   42 fps=5.1 q=29.0 size=      94kB time=00:00:01.34 bitrate=
       574.7kbits/s dup=1 drop=0

      at ChildProcess.exithandler (child_process.js:276:12)
      at emitTwo (events.js:126:13)
      at ChildProcess.emit (events.js:214:7)
      at maybeClose (internal/child_process.js:915:16)
      at Socket.stream.socket.on (internal/child_process.js:336:11)
      at emitOne (events.js:116:13)
      at Socket.emit (events.js:211:7)
      at Pipe._handle.close [as _onclose] (net.js:561:12)
    killed: false,
    code: 137,
    signal: null,
    cmd: 'ffmpeg -i ./jrbze37i.mp4  -strict -2  -filter_complex
       "scale=iw*sar:ih, pad=max(iw\\,ih*(16/9)):ow/(16/9):(ow-iw)/2:(oh-
      ih)/2 " ./jrbze37i_cp.mp4'

    My problem is that sometimes its work or sometimes it doesn’t work.

  • 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.