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  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

Sur d’autres sites (9670)

  • Encode flv video with no audio with ffmpeg

    15 avril 2012, par David Bengoa

    I'm making an application that needs to convert videos to webm or mp4, it works great with all videos I've tried, but it fails if I use a flv file with no audio channels.

    $ ffmpeg -i 0986229665-339108519108-86498841039-6078455325.flv out.webm
    
ffmpeg version 0.7.3-4:0.7.3-0ubuntu0.11.10.1, Copyright (c) 2000-2011 the Libav developers
    
  built on Jan  4 2012 16:08:51 with gcc 4.6.1
    
  configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
    
  WARNING: library configuration mismatch
    
  avutil      configuration: --extra-version='4:0.7.3ubuntu0.11.10.1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdirac --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libvo-aacenc --enable-version3 --enable-libvo-amrwbenc --enable-version3 --enable-libdc1394 --enable-shared --disable-static
    
  avcodec     configuration: --extra-version='4:0.7.3ubuntu0.11.10.1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdirac --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libvo-aacenc --enable-version3 --enable-libvo-amrwbenc --enable-version3 --enable-libdc1394 --enable-shared --disable-static
    
  libavutil    51.  7. 0 / 51.  7. 0
    
  libavcodec   53.  6. 0 / 53.  6. 0
    
  libavformat  53.  3. 0 / 53.  3. 0
    
  libavdevice  53.  0. 0 / 53.  0. 0
    
  libavfilter   2.  4. 0 /  2.  4. 0
    
  libswscale    2.  0. 0 /  2.  0. 0
    
  libpostproc  52.  0. 0 / 52.  0. 0
    
[flv @ 0x2184560] Could not find codec parameters (Audio: [0][0][0][0] / 0x0000, 0 channels)
    
[flv @ 0x2184560] Estimating duration from bitrate, this may be inaccurate
    
Input #0, flv, from '0986229665-339108519108-86498841039-6078455325.flv':
    
  Metadata:
    
    audiocodecid    : -1
    
    server          : Red5 Server 1.0.0 RC1 $Rev: 4193 $
    
    duration        : 3
    
    canSeekToEnd    : true
    
    videocodecid    : 2
    
  Duration: 00:00:03.02, start: 0.000000, bitrate: N/A
    
    Stream #0.0: Video: flv, yuv420p, 640x362, 1k tbr, 1k tbn, 1k tbc
    
    Stream #0.1: Audio: [0][0][0][0] / 0x0000, 0 channels
    
Incompatible sample format '(null)' for codec 'libvorbis', auto-selecting format 's16'
    
[buffer @ 0x21852c0] w:640 h:362 pixfmt:yuv420p
    
[libvpx @ 0x2184040] v0.9.6
    
[libvorbis @ 0x2185ee0] oggvorbis_encode_init: init_encoder failed
    
Output #0, webm, to 'out.webm':
    
    Stream #0.0: Video: libvpx, yuv420p, 640x362, q=2-31, 200 kb/s, 90k tbn, 1k tbc
    
    Stream #0.1: Audio: libvorbis, 0 channels, s16, 64 kb/s
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
  Stream #0.1 -> #0.1
    
Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

    If I pass the -an option, it works, but I can't do that because then all videos wouldn't have audio.

    Any ideas ?

  • avconv on debian jessie throws error when trying to convert raw video to mp4

    20 août 2017, par Vinay Divakar

    I am trying to convert a raw video captured using a Logitech USB Cam(YUYV) to mp4 using avconv. I have tried the below to do so :

    avconv -i out.raw -c copy output.mp4
    
avconv -i out.raw -vcodec copy -acodec copy output.mp4

    but I get an error as shown below.

    root@beaglebone:~/BBB_CV/boneCV# avconv -i out.raw -c copy output.mp4
    
avconv version 11.9-6:11.9-1~deb8u1, Copyright (c) 2000-2017 the Libav developersbuilt on Apr 23 2017 23:00:54 with gcc 4.9.2 (Debian 4.9.2-10)
    
out.raw: Invalid data found when processing input

    I have checked here, but did not find any relevant examples for the above purpose.

    Edit : Added more details—

    I tried doing the below by adding the infile options as suggested :

    root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt yuyv422 -f rawvideo -i out.raw -c copy output.mp4

    This got me rid of the previous error and some new ones popped up as shown below.

    root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt yuyv422 -f rawvideo -i out.raw -c copy output.mp4
    
avconv version 11.9-6:11.9-1~deb8u1, Copyright (c) 2000-2017 the Libav 
    
developers built on Apr 23 2017 23:00:54 with gcc 4.9.2 (Debian 4.9.2-10)
    
[rawvideo @ 0x17e21c0] Estimating duration from bitrate, this may be inaccurate
    
Input #0, rawvideo, from 'out.raw':
    
Duration: N/A, start: 0.000000, bitrate: N/A
    
Stream #0.0: Video: rawvideo, yuyv422, 640x480, 30 tbn
    
[mp4 @ 0x17eb840] Codec for stream 0 does not use global headers but 
    
container format requires global headers
    
[mp4 @ 0x17eb840] track 0: could not find tag, codec not currently 
    
supported in container
    
Output #0, mp4, to 'output.mp4':
    
Metadata:
    
encoder         : Lavf56.1.0
    
Stream #0.0: Video: rawvideo, yuyv422, 640x480, q=2-31, 30 tbn, 30 tbc
    
Stream mapping:
    
Stream #0:0 -> #0:0 (copy)
    
Could not write header for output file #0 (incorrect codec parameters ?): 
    
Operation not permitted

    The output.mp4 is being generated but when tried to open it throws an error.

    Edit : I ran a "sudo apt-get install libav-tools" an then tried. This is what I got.

    root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt 
    
yuyv422 -f rawvideo -i out.raw -c copy output.mp4
    
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
    
built with gcc 4.9.2 (Debian 4.9.2-10)
    
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-
    
 strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' 
    
   -cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-
    
    nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-
    
    libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-
    
    libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
    
    libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-
    
    libvpx --enable-libschroedinger --disable-encoder=libschroedinger --
    
    enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter -
    
    enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-
    
   libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/arm-linux-gnueabihf -
    
   -disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-
    
   frei0r --enable-openssl --enable-libass --enable-libopus --enable-
    
   fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --
    
   disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample 
    
   --disable-htmlpages --disable-podpages --enable-libutvideo --enable-
    
   libfdk-aac --enable-libx265 --enable-libiec61883 --enable-libdc1394 --
    
   disable-altivec --shlibdir=/usr/lib/arm-linux-gnueabihf
    
   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
    
  [rawvideo @ 0x18465e0] Estimating duration from bitrate, this may be 
    
   inaccurate
    
   Input #0, rawvideo, from 'out.raw':
    
   Duration: 00:00:00.10, start: 0.000000, bitrate: 146626 kb/s
    
   Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 
    
   kb/s, 30 tbr, 30 tbn, 30 tbc
    
   [mp4 @ 0x184f790] Could not find tag for codec rawvideo in stream #0, 
    
   codec not currently supported in container
    
   Output #0, mp4, to 'output.mp4':
    
   Metadata:
    
   encoder         : Lavf56.25.101
    
   Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, q=2-
    
   31, 147456 kb/s, 30 tbr, 30 tbn, 30 tbc
    
   Stream mapping:
    
   Stream #0:0 -> #0:0 (copy)
    
   Could not write header for output file #0 (incorrect codec parameters ?): 
    
   Invalid argument

    I ran "ffmpeg -s 640x480 -framerate 30 -pix_fmt yuv420p -f rawvideo -i out.raw output.mp4" and below is what I got.

    root@beaglebone:~/BBB_CV/boneCV# ffmpeg -s 640x480 -framerate 30 -pix_fmt yuv420p -f rawvideo -i out.raw output.mp4
    
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/arm-linux-gnueabihf --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/arm-linux-gnueabihf
    
  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
    
[rawvideo @ 0x1d55e0] Estimating duration from bitrate, this may be inaccurate
    
Input #0, rawvideo, from 'out.raw':
    
  Duration: 00:00:00.13, start: 0.000000, bitrate: 109969 kb/s
    
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 640x480, 110592 kb/s, 30 tbr, 30 tbn, 30 tbc
    
[libx264 @ 0x1df6c0] using cpu capabilities: ARMv6 NEON
    
[libx264 @ 0x1df6c0] profile High, level 3.0
    
[libx264 @ 0x1df6c0] 264 - core 146 - 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=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 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:
    
    encoder         : Lavf56.25.101
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 30 fps, 15360 tbn, 30 tbc
    
    Metadata:
    
      encoder         : Lavc56.26.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[rawvideo @ 0x1de3a0] Invalid buffer size, packet size 450428 < expected frame_size 460800
    
Error while decoding stream #0:0: Invalid argument
    
frame=    3 fps=1.7 q=29.0 Lsize=     263kB time=00:00:00.03 bitrate=64692.6kbits/s    
    
video:262kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.318205%
    
[libx264 @ 0x1df6c0] frame I:1     Avg QP:33.09  size:100676
    
[libx264 @ 0x1df6c0] frame P:2     Avg QP:32.99  size: 83672
    
[libx264 @ 0x1df6c0] mb I  I16..4:  0.0% 95.4%  4.6%
    
[libx264 @ 0x1df6c0] mb P  I16..4:  0.0% 45.7%  3.0%  P16..4: 35.9% 10.7%  4.8%  0.0%  0.0%    skip: 0.0%
    
[libx264 @ 0x1df6c0] 8x8 transform intra:94.6% inter:86.1%
    
[libx264 @ 0x1df6c0] coded y,uvDC,uvAC intra: 100.0% 100.0% 100.0% inter: 53.6% 100.0% 100.0%
    
[libx264 @ 0x1df6c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 56% 12% 24%  2%  0%  1%  1%  2%  3%
    
[libx264 @ 0x1df6c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 82% 11%  4%  0%  0%  0%  1%  0%  1%
    
[libx264 @ 0x1df6c0] i8c dc,h,v,p: 48% 30% 14%  7%
    
[libx264 @ 0x1df6c0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x1df6c0] ref P L0: 83.5%  7.9%  8.6%
    
[libx264 @ 0x1df6c0] kb/s:21441.60

  • Ffmpeg/Fluent-Ffmpeg : Output file #0 does not contain any stream

    16 août 2017, par Code Sherpa

    Use Case

    When a user records an audio file and uploads to firebase storage, run a trigger that crops a clip of that file and saves it to a "preview" directory.

    Problem

    Getting Output file #0 does not contain any stream after static .AAC file is downloaded to temp directory and ffmpeg command is run.

    Environment

    • mac client / firebase storage
    • node v8.1.0
    • ffmpeg v3.2.2
    • fluent-ffmpeg v2.1.2

    Node Code

      var command = new ffmpeg({ source: tempFilePath, timeout: 0 })
    
      .setFfmpegPath(ffmpegPath)
    
      .setFfprobePath(ffprobePath)
    
      .inputOption('-t', '10')
    
      .inputOption('-ss', '10')
    
      .outputOption('-acodec', 'copy')
    
      .on('start', function(commandLine) {
    
            console.log('Spawned Ffmpeg with command: ', commandLine);
    
       })
    
      .on('end', function() {
    
          console.log('Preview file cropping done successfully');
    
       })
    
      .on('error', function(err, stdout, stderr) {
    
          var build = err;
    
          if (!stdout === '') { build = build + '\n' + stdout; }
    
          build = build + '\n' + stderr;
    

    
          console.log(build);
    
       }).save(tempFilePath);

    Ffmpeg Command

    Spawned Ffmpeg with command : ffmpeg -t 10 -ss 10 -i
    /tmp/2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac -y -acodec
    copy /tmp/2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac

    Debug Output From Firebase

    Error : ffmpeg exited with code 1 : Output #0, adts, to
    ’/tmp/2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac’ : Output
    file #0 does not contain any stream

    ffmpeg version 3.2.2-static http://johnvansickle.com/ffmpeg/
    Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.1
    (Debian 5.4.1-4) 20161202 configuration : —enable-gpl
    —enable-version3 —enable-static —disable-debug —disable-ffplay —disable-indev=sndio —disable-outdev=sndio —cc=gcc-5 —enable-fontconfig —enable-frei0r —enable-gnutls —enable-gray —enable-libass —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libvidstab —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libzimg libavutil 55. 34.100 / 55. 34.100 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.100 / 57. 56.100 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libswscale 4. 2.100 /
    4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 [aac @ 0x3a00e60] Format aac detected only with low score of 1, misdetection possible ! [aac @ 0x3a00e60] Could
    not find codec parameters for stream 0 (Audio : aac, 0 channels, fltp) :
    unspecified sample rate Consider increasing the value for the
    ’analyzeduration’ and ’probesize’ options
    /tmp/2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac : could not
    seek to position 10.000 Input #0, aac, from
    ’/tmp/2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac’ :
    Duration : N/A, bitrate : N/A
    Stream #0:0 : Audio : aac, 0 channels, fltp Output #0, adts, to ’/tmp/2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac’ : Output
    file #0 does not contain any stream

    Console Output

    | $ ffmpeg -t 10 -ss 10 -i 2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac -y -acodec aac
    output_file.aac

    ffmpeg version 3.2.2 Copyright (c) 2000-2016 the
    FFmpeg developers built with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
    configuration : —prefix=/Volumes/Ramdisk/sw —enable-gpl
    —enable-pthreads —enable-version3 —enable-libspeex —enable-libvpx —disable-decoder=libvpx —enable-libmp3lame —enable-libtheora —enable-libvorbis —enable-libx264 —enable-avfilter —enable-libopencore_amrwb —enable-libopencore_amrnb —enable-filters —enable-libgsm —enable-libvidstab —enable-libx265 —disable-doc —arch=x86_64 —enable-runtime-cpudetect libavutil 55. 34.100 / 55. 34.100 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.100 / 57. 56.100 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libswscale 4. 2.100 /
    4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 [aac @ 0x7fac6c800a00] Estimating duration from bitrate, this may be inaccurate Input #0, aac, from
    ’2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac’ : Duration :
    00:01:07.71, bitrate : 223 kb/s
    Stream #0:0 : Audio : aac (LC), 44100 Hz, stereo, fltp, 277 kb/s Output #0, adts, to ’output_file.aac’ : Metadata :
    encoder : Lavf57.56.100
    Stream #0:0 : Audio : aac (LC), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata :
    encoder : Lavc57.64.101 aac Stream mapping : Stream #0:0 -> #0:0 (aac (native) -> aac (native)) Press [q] to stop, [?] for help size= 159kB time=00:00:10.00 bitrate= 130.5kbits/s
    speed=12.7x video:0kB audio:156kB subtitle:0kB other streams:0kB
    global headers:0kB muxing overhead : 1.887004% [aac @ 0x7fac6d004600]
    Qavg : 383.548

    Origin File Format

    $ ffprobe -show_format
    2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac

    ffprobe version 3.2.2 Copyright (c) 2007-2016 the FFmpeg developers
    built with llvm-gcc 4.2.1 (LLVM build 2336.11.00) configuration :
    —prefix=/Volumes/Ramdisk/sw —enable-gpl —enable-pthreads —enable-version3 —enable-libspeex —enable-libvpx —disable-decoder=libvpx —enable-libmp3lame —enable-libtheora —enable-libvorbis —enable-libx264 —enable-avfilter —enable-libopencore_amrwb —enable-libopencore_amrnb —enable-filters —enable-libgsm —enable-libvidstab —enable-libx265 —disable-doc —arch=x86_64 —enable-runtime-cpudetect libavutil 55. 34.100 / 55. 34.100 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.100 / 57. 56.100 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libswscale 4. 2.100 /
    4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 [aac @ 0x7fefbd001400] Estimating duration from bitrate, this may be inaccurate Input #0, aac, from
    ’2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac’ : Duration :
    00:01:07.71, bitrate : 223 kb/s
    Stream #0:0 : Audio : aac (LC), 44100 Hz, stereo, fltp, 223 kb/s [FORMAT]
    filename=2EB100B0-6C1E-4D51-9087-764CA653AFC720170711232034.aac
    nb_streams=1 nb_programs=0 format_name=aac format_long_name=raw ADTS
    AAC (Advanced Audio Coding) start_time=N/A duration=67.706333
    size=1892392 bit_rate=223599 probe_score=51 [/FORMAT]

    Output File Format

    $ ffprobe -show_format output_file.aac ffprobe version 3.2.2 Copyright
    (c) 2007-2016 the FFmpeg developers built with llvm-gcc 4.2.1 (LLVM
    build 2336.11.00) configuration : —prefix=/Volumes/Ramdisk/sw
    —enable-gpl —enable-pthreads —enable-version3 —enable-libspeex —enable-libvpx —disable-decoder=libvpx —enable-libmp3lame —enable-libtheora —enable-libvorbis —enable-libx264 —enable-avfilter —enable-libopencore_amrwb —enable-libopencore_amrnb —enable-filters —enable-libgsm —enable-libvidstab —enable-libx265 —disable-doc —arch=x86_64 —enable-runtime-cpudetect libavutil 55. 34.100 / 55. 34.100 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.100 /
    57. 56.100 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libswscale 4. 2.100 / 4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 /
    54. 1.100 [aac @ 0x7fa904802a00] Estimating duration from bitrate, this may be inaccurate Input #0, aac, from ’output_file.aac’ :
    Duration : 00:00:09.45, bitrate : 138 kb/s
    Stream #0:0 : Audio : aac (LC), 44100 Hz, stereo, fltp, 138 kb/s [FORMAT] filename=output_file.aac nb_streams=1 nb_programs=0
    format_name=aac format_long_name=raw ADTS AAC (Advanced Audio Coding)
    start_time=N/A duration=9.454635 size=163278 bit_rate=138156
    probe_score=51 [/FORMAT]

    Comments & Observations

    • I am able to run the ffmpeg command (provided above) locally and get the results I want.

    • The origin file is AAC. I have verified that it is, indeed, an AAC file and not a different file type masquerading as an AAC.

    • The output file format appears as audio/x-aac in firebase. I would expect it to be the same as the origin file - audio/aac.

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