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• Alexa developer console gives me "The audio is not of a supported MPEG version" Error

  20 mars, par Boban BoBo Banjevic

  I am trying to make an Alexa skill, and I am using audio mp3 files stored is S3, lambda function has access to my DynamoDb and ultimately S3. But I have an issue with my audio files. I keep on getting "The audio is not of a supported MPEG version" when I test alexa skill. I tried multiple ffmpeg -i file conversions.

  


  When I type ffprobe -v quiet -print_format json -show_format -show_streams "Piano.mf.A1.audio10.mp3" this is what i have for my file down below :

  


  
Input #0, mp3, from 'Piano.mf.A1.audio10.mp3':
  Metadata:
    encoder         : Lavf61.9.107
  Duration: 00:00:07.00, start: 0.025057, bitrate: 129 kb/s
  Stream #0:0: Audio: mp3 (mp3float), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc61.33
PS C:\Users\boban\OneDrive\Desktop\newBob2> ffprobe -v quiet -print_format json -show_format -show_streams "Piano.mf.A1.audio10.mp3"
{
    "streams": [
        {
            "index": 0,
            "codec_name": "mp3",
            "codec_long_name": "MP3 (MPEG audio layer 3)",
            "codec_type": "audio",
            "codec_tag_string": "[0][0][0][0]",
            "codec_tag": "0x0000",
            "sample_fmt": "fltp",
            "sample_rate": "44100",
            "channels": 2,
            "channel_layout": "stereo",
            "bits_per_sample": 0,
            "initial_padding": 0,
            "r_frame_rate": "0/0",
            "avg_frame_rate": "0/0",
            "time_base": "1/14112000",
            "start_pts": 353600,
            "start_time": "0.025057",
            "duration_ts": 98795520,
            "duration": "7.000816",
            "bit_rate": "128000",
            "disposition": {
                "default": 0,
                "dub": 0,
                "original": 0,
                "comment": 0,
                "lyrics": 0,
                "karaoke": 0,
                "forced": 0,
                "hearing_impaired": 0,
                "visual_impaired": 0,
                "clean_effects": 0,
                "attached_pic": 0,
                "timed_thumbnails": 0,
                "non_diegetic": 0,
                "captions": 0,
                "descriptions": 0,
                "metadata": 0,
                "dependent": 0,
                "still_image": 0,
                "multilayer": 0
            },
            "tags": {
                "encoder": "Lavc61.33"
            }
        }
    ],
    "format": {
        "filename": "Piano.mf.A1.audio10.mp3",
        "nb_streams": 1,
        "nb_programs": 0,
        "nb_stream_groups": 0,
        "format_name": "mp3",
        "format_long_name": "MP2/3 (MPEG audio layer 2/3)",
        "start_time": "0.025057",
        "duration": "7.000816",
        "size": "112892",
        "bit_rate": "129004",
        "probe_score": 51,
        "tags": {
            "encoder": "Lavf61.9.107"
        }
    }
}


  


  It should be everything that is required, am I doing something wrong, this is the only thing stopping me from finishing the skill. Asking ChatGPT said it could be because of the mp3float, and after many conversions it still doesn't work.

  


• FFMPEG on AWS Lambda Only outputs half a second of video when converting video from mobile safari

  18 août 2023, par user1825257

  I am running FFMPEG on AWS Lambda using nodejs and fluent-ffmpeg. I am able to convert videos recorded on most devices / browsers, but when I attempt to convert videos recorded on Mobile Safari, the length of the output video is 1/2 a second regardless of the input length.

  


  My Typescript code is :

  


      import * as ffmpeg from &#x27;fluent-ffmpeg&#x27;;&#xA;    public static StandardizeVideoFormat(&#xA;      inputSignedUrl: string,&#xA;      filename: string,&#xA;    ): Promise<string> {&#xA;      const localFilePath = `/tmp/${Date.now()}_${filename}.mp4`;&#xA;    &#xA;      return new Promise((resolve, reject) => {&#xA;        ffmpeg(inputSignedUrl)&#xA;          .outputOptions([&#xA;            &#x27;-crf&#x27;,&#xA;            &#x27;18&#x27;,&#xA;            &#x27;-vcodec&#x27;,&#xA;            &#x27;libx264&#x27;,&#xA;            &#x27;-codec:a&#x27;,&#xA;            &#x27;aac&#x27;,&#xA;            &#x27;-preset&#x27;,&#xA;            &#x27;medium&#x27;,&#xA;          ])&#xA;          .output(localFilePath)&#xA;          .on(&#x27;start&#x27;, function (commandLine) {&#xA;            console.log(&#x27;Spawned Ffmpeg with command: &#x27; &#x2B; commandLine);&#xA;          })&#xA;          .on(&#x27;error&#x27;, function (err) {&#xA;            reject(err);&#xA;          })&#xA;          .on(&#x27;progress&#x27;, function (progress) {&#xA;            console.log(&#x27;progress&#x27;, progress);&#xA;          })&#xA;          .on(&#x27;end&#x27;, function () {&#xA;            resolve(localFilePath);&#xA;          })&#xA;          .run();&#xA;      });&#xA;    }&#xA;</string>

  


  Using FFprobe, The metadata of the input file is :

  


  {
  streams: [
    {
      index: 0,
      codec_name: 'h264',
      codec_long_name: 'H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10',
      profile: 'Baseline',
      codec_type: 'video',
      codec_tag_string: 'avc1',
      codec_tag: '0x31637661',
      width: 1920,
      height: 1080,
      coded_width: 1920,
      coded_height: 1080,
      closed_captions: 0,
      film_grain: 0,
      has_b_frames: 0,
      sample_aspect_ratio: 'N/A',
      display_aspect_ratio: 'N/A',
      pix_fmt: 'yuvj420p',
      level: 40,
      color_range: 'pc',
      color_space: 'unknown',
      color_transfer: 'unknown',
      color_primaries: 'unknown',
      chroma_location: 'left',
      field_order: 'progressive',
      refs: 1,
      is_avc: 'true',
      nal_length_size: 4,
      id: '0x1',
      r_frame_rate: '30000/1001',
      avg_frame_rate: '60000/1991',
      time_base: '1/600',
      start_pts: 26,
      start_time: 0.043333,
      duration_ts: 4008,
      duration: 6.68,
      bit_rate: 10175170,
      max_bit_rate: 'N/A',
      bits_per_raw_sample: 8,
      nb_frames: 'N/A',
      nb_read_frames: 'N/A',
      nb_read_packets: 'N/A',
      extradata_size: 31,
      side_data_type: 'Display Matrix',
      displaymatrix: '',
      rotation: '-90',
      tags: [Object],
      disposition: [Object]
    },
    {
      index: 1,
      codec_name: 'aac',
      codec_long_name: 'AAC (Advanced Audio Coding)',
      profile: 'LC',
      codec_type: 'audio',
      codec_tag_string: 'mp4a',
      codec_tag: '0x6134706d',
      sample_fmt: 'fltp',
      sample_rate: 48000,
      channels: 1,
      channel_layout: 'mono',
      bits_per_sample: 0,
      initial_padding: 0,
      id: '0x2',
      r_frame_rate: '0/0',
      avg_frame_rate: '0/0',
      time_base: '1/48000',
      start_pts: 0,
      start_time: 0,
      duration_ts: 319488,
      duration: 6.656,
      bit_rate: 181302,
      max_bit_rate: 'N/A',
      bits_per_raw_sample: 'N/A',
      nb_frames: 'N/A',
      nb_read_frames: 'N/A',
      nb_read_packets: 'N/A',
      extradata_size: 2,
      tags: [Object],
      disposition: [Object]
    }
  ],
  format: {
    filename: 'input.mp4',
    nb_streams: 2,
    nb_programs: 0,
    format_name: 'mov,mp4,m4a,3gp,3g2,mj2',
    format_long_name: 'QuickTime / MOV',
    start_time: 0,
    duration: 6.723333,
    size: 8651792,
    bit_rate: 10294646,
    probe_score: 100,
    tags: {
      major_brand: 'iso5',
      minor_version: '1',
      compatible_brands: 'isomiso5hlsf',
      creation_time: '2023-08-05T19:03:15.000000Z'
    }
  },
  chapters: []
}


  


  Any ideas on why the output of my command on this file always results in a 0.5 second long output ?

  


• FFMPEG and Mencoder building screenshot returns 0 size images

  12 avril 2014, par Genus

  I have a script and it used to work fine but suddenly it stopped working and giving me zero size images as screenshot after video convert.

  here is the command for video screenshot.

  $cmd = $GLOBALS["paths"]["ffmpeg"]." -y -i ".$file." -f mjpeg -r 1 -ss ".$time." -vframes 1 -an ".$tmpdir."/00000001.jpg 2>&1";
  
      exec($cmd,$results);

  Debug :

  -----------------------------------------------------
  
  
  
  ------------mencoder_and_fmpeg.php SCREENSHOT -------
  
  
  
  -----------------------------------------------------
  
  
  
    COMMAND: ffmpeg -y -i /home/TESTING/public_html/vid/6d/ad/29/6dad2946a2ba102.flv -f mjpeg -r 1 -ss 14.48 -vframes 1 -an /home/TESTING/public_html/scr/42/3a/92/00000001.jpg 2>&1
  
  
  
    FFmpeg version SVN-r16244, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  
  
  
    configuration: --disable-mmx --enable-shared --enable-libvorbis --enable-gpl --enable-swscale --enable-pthreads --disable-static --disable-demuxer=v4l --disable-demuxer=v4l2 --enable-libtheora --enable-gpl --enable-libspeex --enable-libmp3lame --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libamr-nb --enable-libamr-wb --enable-nonfree --enable-libxvid
  
    libavutil     49.12. 0 / 49.12. 0
  
    libavcodec    52. 7. 0 / 52.108. 0
  
    libavformat   52.23. 1 / 52.92. 0
  
    libavdevice   52. 1. 0 / 52. 2. 3
  
    libswscale     0. 6. 1 /  0.12. 0
  
  
  
    built on Apr  9 2011 22:48:41, gcc: 4.1.2 20080704 (Red Hat 4.1.2-50)
  
    built by Admin-Ahead Server Technologies FFmpeg installer v5.0.6b
  
    Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 10.92 (131/12)
  
    Stream mapping:
  
    Stream #0.0 -> #0.0
  
  
  
    Press [q] to stop encoding
  
    ffmpeg: symbol lookup error: ffmpeg: undefined symbol: frame_hook_process