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  • 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.

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    5 septembre 2013, par

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    13 septembre 2013

    Jolie sélection multiple
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Sur d’autres sites (8635)

  • How to export audio from a iPhone video file with FFmpeg ?

    11 janvier 2020, par DanScripter

    UPDATE 1 the problem resides in the input read-stream. (check below)

    I am using fluent-ffmpeg (version : 2.1.2) to get a .mp3 file out of a video file that I input as a stream .createReadStream(). I output the file as a .pipe to a remoteWriteStream.

    ffmpeg -i pipe:0 -vn -f mp3 -acodec mp3 -movflags frag_keyframe+empty_moov pipe:1

    This works fine with .mp4, .webm and .mov (codec : prores) files.

    But it somehow does not want to work with a .mov out of an iPhone 11. FFmpeg is not giving me any error when running above code. It creates the .mp3 file but the size is just 152 B and it is not playable.

    I ffprobed the iPhone .mov files it returns this :

    "{ streams: 
    
   [ { index: 0,
    
       codec_name: 'hevc',
    
       codec_long_name: 'H.265 / HEVC (High Efficiency Video Coding)',
    
       profile: 'Main',
    
       codec_type: 'video',
    
       codec_time_base: '1111/33300',
    
       codec_tag_string: 'hvc1',
    
       codec_tag: '0x31637668',
    
       width: 1920,
    
       height: 1080,
    
       coded_width: 1920,
    
       coded_height: 1088,
    
       has_b_frames: 2,
    
       sample_aspect_ratio: '0:1',
    
       display_aspect_ratio: '0:1',
    
       pix_fmt: 'yuv420p',
    
       level: 120,
    
       color_range: 'tv',
    
       color_space: 'bt709',
    
       color_transfer: 'bt709',
    
       color_primaries: 'bt709',
    
       chroma_location: 'unspecified',
    
       field_order: 'unknown',
    
       timecode: 'N/A',
    
       refs: 1,
    
       id: 'N/A',
    
       r_frame_rate: '30000/1001',
    
       avg_frame_rate: '33300/1111',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 7611708,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 333,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 1,
    
       codec_name: 'aac',
    
       codec_long_name: 'AAC (Advanced Audio Coding)',
    
       profile: 'unknown',
    
       codec_type: 'audio',
    
       codec_time_base: '1/44100',
    
       codec_tag_string: 'mp4a',
    
       codec_tag: '0x6134706d',
    
       sample_fmt: 'fltp',
    
       sample_rate: 44100,
    
       channels: 2,
    
       channel_layout: 'stereo',
    
       bits_per_sample: 0,
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/44100',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 489951,
    
       duration: 11.11,
    
       bit_rate: 135091,
    
       max_bit_rate: 192000,
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 481,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 2,
    
       codec_name: 'unknown',
    
       codec_long_name: 'unknown',
    
       profile: 'unknown',
    
       codec_type: 'data',
    
       codec_tag_string: 'mebx',
    
       codec_tag: '0x7862656d',
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 2670,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 38,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 3,
    
       codec_name: 'unknown',
    
       codec_long_name: 'unknown',
    
       profile: 'unknown',
    
       codec_type: 'data',
    
       codec_tag_string: 'mebx',
    
       codec_tag: '0x7862656d',
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 7,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 1,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 4,
    
       codec_name: 'unknown',
    
       codec_long_name: 'unknown',
    
       profile: 'unknown',
    
       codec_type: 'data',
    
       codec_tag_string: 'mebx',
    
       codec_tag: '0x7862656d',
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 18117,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 333,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] } ],
    
  format: 
    
   { filename: 'pipe:0',
    
     nb_streams: 5,
    
     nb_programs: 0,
    
     format_name: 'mov,mp4,m4a,3gp,3g2,mj2',
    
     format_long_name: 'QuickTime / MOV',
    
     start_time: 'N/A',
    
     duration: 11.11,
    
     size: 'N/A',
    
     bit_rate: 'N/A',
    
     probe_score: 100,
    
     tags: 
    
      { major_brand: 'qt  ',
    
        minor_version: '0',
    
        compatible_brands: 'qt  ',
    
        creation_time: '2020-01-11T12:33:36.000000Z',
    
        'com.apple.quicktime.make': 'Apple',
    
        'com.apple.quicktime.model': 'iPhone 11',
    
        'com.apple.quicktime.software': '13.3',
    
        'com.apple.quicktime.creationdate': '2020-01-11T13:33:36+0100' } },
    
  chapters: [] }"

    The created .mp3 file results in a undefined.

    I already tried to take the .mov re-encode it to an .mp4 via ffmpeg and then try the above code to get the .mp3 - still does not work.

    Any advice how I can make this work ?

    thanks !

    UPDATE 1
    The problem resides in the input stream ! When I download the file to the local machine and input it as as a local file, not as a read stream, it works perfectly.

    I am creating the stream from a google cloud bucket like this :

    const myBucket = storage.bucket('myBucket');
    
const remoteReadStream = myBucket.file(file).createReadStream();

    Since this code is perfectly working with all other codecs, what maybe the issue while creating the read stream from the google cloud from a h265 file ?

  • Convert from opus to ogg file using ffmpeg [python soundfile]

    27 septembre 2021, par Zabir Al Nazi

    I'm using python soundfile to audio files in one of my projects. I have a dataset that contains opus files.

    


    python soundfile can not read opus files directly but can read ogg files. (https://github.com/bastibe/python-soundfile/issues/252)

    


    How can I convert all the opus files to ogg files with ffmpeg ?

    


    I have tried the following command,

    


     ffmpeg -i test_file_2.opus -c:a libvorbis -b:a 16k test_file_2.ogg



    


    But I get an error,

    


    ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7.3.0 (crosstool-NG 1.23.0.449-a04d0)
  configuration: --prefix=/opt/conda --cc=/opt/conda/conda-bld/ffmpeg_1597178665428/_build_env/bin/x86_64-conda_cos6-linux-gnu-cc --disable-doc --disable-openssl --enable-avresample --enable-gnutls --enable-hardcoded-tables --enable-libfreetype --enable-libopenh264 --enable-pic --enable-pthreads --enable-shared --disable-static --enable-version3 --enable-zlib --enable-libmp3lame
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
[ogg @ 0x55bad6b9cbc0] 543 bytes of comment header remain
Input #0, ogg, from 'test_file_2.opus':
  Duration: 00:00:14.10, start: 0.000000, bitrate: 34 kb/s
    Stream #0:0: Audio: opus, 48000 Hz, mono, fltp
    Metadata:
      album           : Onder Moeders Vleugels
      ENCODER_OPTIONS : --quiet
      artist          : Louisa May Alcott
      title           : 02 - Een vroolijk kerstfeest
      encoder         : opusenc from opus-tools 0.1.10;Lavf57.83.100
Unknown encoder 'libvorbis'



    


  • brew install ffmpeg installs python 3.9

    13 novembre 2020, par mrgloom

    For some reason brew install ffmpeg downloads python 3.9 as dependence

    


    ==> Installing dependencies for ffmpeg: gnutls, python@3.9, glib, cairo, gobject-introspection, harfbuzz, libass and libvpx


    


    As I can see here https://formulae.brew.sh/formula/ffmpeg there is no dependence on python 3.9

    


    How can I install ffmpeg for my current python Python 3.7.7 ?

    


    Update :

    


    Maybe something is broken in my python installation ?

    


    brew info python&#xA;&#xA;python@3.9: stable 3.9.0 (bottled)&#xA;Interpreted, interactive, object-oriented programming language&#xA;https://www.python.org/&#xA;/usr/local/Cellar/python/3.7.7 (4,165 files, 64.0MB) *&#xA;  Poured from bottle on 2020-04-03 at 20:11:58&#xA;From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/python@3.9.rb&#xA;License: Python-2.0&#xA;==> Dependencies&#xA;Build: pkg-config ✔&#xA;Required: gdbm ✔, openssl@1.1 ✔, readline ✔, sqlite ✔, xz ✔&#xA;==> Caveats&#xA;Python has been installed as&#xA;  /usr/local/bin/python3&#xA;&#xA;Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to&#xA;`python3`, `python3-config`, `pip3` etc., respectively, have been installed into&#xA;  /usr/local/opt/python@3.9/libexec/bin&#xA;&#xA;You can install Python packages with&#xA;  pip3 install <package>&#xA;They will install into the site-package directory&#xA;  /usr/local/lib/python3.9/site-packages&#xA;&#xA;See: https://docs.brew.sh/Homebrew-and-Python&#xA;==> Analytics&#xA;install: 588,344 (30 days), 666,372 (90 days), 666,373 (365 days)&#xA;install-on-request: 104,126 (30 days), 105,703 (90 days), 105,705 (365 days)&#xA;build-error: 0 (30 days)&#xA;</package>

    &#xA;

    brew info shows python@3.9 but actually it's 3.7.7 :

    &#xA;

    /usr/local/bin/python3 -V&#xA;Python 3.7.7&#xA;

    &#xA;

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