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• ffmpeg strftime no effect on windows

  18 mai 2020, par Ben

  I'm trying to auto mark the output file with timestamps with ffmpeg. Here's my test cmd :

  



  .\ffmpeg.exe -y -loglevel 99 -i test.mp3 -strftime 1 %Y.ogg


  



  I expected a file named 2020.ogg, however only got %Y.ogg. In another word, output filename is not processed by strftime(). I'm using powershell so there should be no relation with cmd's %% escaping.

  



  Here's the output : https://pastebin.com/LUVh2kFA I'm using static builds from https://ffmpeg.zeranoe.com (Thanks Zeranoe !) I confirmed that the problem exists in v4.2.2 and git-20200515. Is there any chance to fix it or am I doing it wrong ?

  


• Why is FFProbe (using fluent-ffmpeg) returning incomplete and inaccurate metadata ?

  18 avril 2024, par volume one

  I am returning metadata about a file using ffprobe. The file can be found here.

  


  I am using fluent-ffmpeg in Node.js which shouldn't make any difference. Its just nicer to use than a command-line.

  


  The code goes like this :

  


  ffmpeg.ffprobe('https://devxxx001.s3.amazonaws.com/vertical-hd_720_1280_30fps.mp4'), function (err, metadata) {
 console.log(JSON.stringify(metadata));
});


  


  The metadata output I receive is this :

  


  {
  "streams": [
    {
      "index": 0,
      "codec_name": "h264",
      "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
      "profile": "High",
      "codec_type": "video",
      "codec_tag_string": "avc1",
      "codec_tag": "0x31637661",
      "width": 720,
      "height": 1280,
      "coded_width": 720,
      "coded_height": 1280,
      "closed_captions": 0,
      "film_grain": 0,
      "has_b_frames": 2,
      "sample_aspect_ratio": "N/A",
      "display_aspect_ratio": "N/A",
      "pix_fmt": "yuv420p",
      "level": 32,
      "color_range": "tv",
      "color_space": "bt709",
      "color_transfer": "bt709",
      "color_primaries": "bt709",
      "chroma_location": "left",
      "field_order": "progressive",
      "refs": 1,
      "is_avc": "true",
      "nal_length_size": 4,
      "id": "0x1",
      "r_frame_rate": "30/1",
      "avg_frame_rate": "30/1",
      "time_base": "1/30",
      "start_pts": 0,
      "start_time": 0,
      "duration_ts": 267,
      "duration": 8.9,
      "bit_rate": 2382497,
      "max_bit_rate": "N/A",
      "bits_per_raw_sample": 8,
      "nb_frames": 267,
      "nb_read_frames": "N/A",
      "nb_read_packets": "N/A",
      "extradata_size": 47,
      "tags": {
        "creation_time": "2020-05-19T10:09:46.000000Z",
        "language": "und",
        "handler_name": "L-SMASH Video Handler",
        "vendor_id": "[0][0][0][0]",
        "encoder": "AVC Coding"
      },
      "disposition": {
        "default": 1,
        "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,
        "captions": 0,
        "descriptions": 0,
        "metadata": 0,
        "dependent": 0,
        "still_image": 0
      }
    }
  ],
  "format": {
    "filename": "https:/devxxx001.s3.amazonaws.com/vertical-hd_720_1280_30fps.mp4",
    "nb_streams": 1,
    "nb_programs": 0,
    "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
    "format_long_name": "QuickTime / MOV",
    "start_time": 0,
    "duration": 8.9,
    "size": 2654719,
    "bit_rate": 2386264,
    "probe_score": 100,
    "tags": {
      "major_brand": "mp42",
      "minor_version": "0",
      "compatible_brands": "mp42mp41isomavc1",
      "creation_time": "2020-05-19T10:09:46.000000Z"
    }
  },
  "chapters": []
}


  


  I need to know the aspect ratio of the video so that I can display it properly but ffprobe is returning "N/A" :

  


   "sample_aspect_ratio": "N/A",
 "display_aspect_ratio": "N/A",


  


  In addition, if I want to know the video container format (mp4 in this case), it is showing multiple formats instead of just one :

  


   "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
 "format_long_name": "QuickTime / MOV",


  


  I believe it may be an issue with the ffprobe command but I am unable to pass it options like on the command-line. Even then I don't know what options need to be passed to get the correct metadata.

  


• How to expand bash array into arguments correctly

  12 avril 2022, par alvgarci

  I'm working on a script on Bash.

  


  The objective is pass 36 arguments to a ffmpeg via command.

  


  Steps here :

  


  


  1. I verified the command. This one works fine :

     


     ffmpeg -i  "$f" -y -acodec aac -ab 128k  -vcodec copy  -f mp4 -movflags use_metadata_tags   -metadata MtsExifToolVersionNumber="12.30"  -metadata MtsFileName="00017.MTS"  -metadata MtsDirectory="."  -metadata MtsFileSize="59 MiB"  -metadata MtsFileModificationDate/Time="2020"  -metadata MtsFileAccessDate/Time="2021"  -metadata MtsFileInodeChangeDate/Time="2022"  -metadata MtsFilePermissions="-rwxr-xr-x"  -metadata MtsFileType="M2TS"  -metadata MtsFileTypeExtension="mts"  -metadata MtsMIMEType="video/m2ts"  -metadata MtsVideoStreamType="H.264 (AVC) Video"  -metadata MtsAudioBitrate="256 kbps"  -metadata MtsSurroundMode="Not indicated"  -metadata MtsAudioChannels="2"  -metadata MtsAudioStreamType="PGS Audio"  -metadata MtsImageWidth="1920"  -metadata MtsImageHeight="1080"  -metadata MtsDate/TimeOriginal="2020"  -metadata MtsApertureSetting="Auto"  -metadata MtsGain="0 dB"  -metadata MtsExposureProgram="Program AE"  -metadata MtsWhiteBalance="Auto"  -metadata MtsFocus="Auto (0.155)"  -metadata MtsImageStabilization="On (0x3f)"  -metadata MtsExposureTime="1/60"  -metadata MtsFNumber="3.4"  -metadata MtsMake="Sony"  -metadata MtsCameraModelName="HDR-CX405"  -metadata MtsWarning="[minor] The ExtractEmbedded option may find more tags in the video data"  -metadata MtsAudioSampleRate="48000"  -metadata MtsDuration="18.71 s"  -metadata MtsAperture="3.4"  -metadata MtsImageSize="1920x1080"  -metadata MtsMegapixels="2.1"  -metadata MtsShutterSpeed="1/60"  -metadata Offset="$Offset" -metadata creation_time="$DATE" "./$output/convert_exif_ok/$MP4_NAME"


     


  


  


  Now.. I created a bash array and I tried to expand it directly on the command :

  


    ffmpeg -i  "$f" -y -acodec aac -ab 128k  -vcodec copy  -f mp4 -movflags use_metadata_tags  $(echo "${exif_2[@]}"  )   -metadata Offset="$Offset" -metadata creation_time="$DATE" "./$output/convert_exif_ok/$MP4_NAME"


  


  And.. this doesn't work..

  


  Seems like it's taking one argument so long instead of 36 different arguments..

  


  This is the output :

  


      ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/5.0.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      57. 17.100 / 57. 17.100
  libavcodec     59. 18.100 / 59. 18.100
  libavformat    59. 16.100 / 59. 16.100
  libavdevice    59.  4.100 / 59.  4.100
  libavfilter     8. 24.100 /  8. 24.100
  libswscale      6.  4.100 /  6.  4.100
  libswresample   4.  3.100 /  4.  3.100
  libpostproc    56.  3.100 / 56.  3.100
Input #0, mpegts, from '00017.MTS':
  Duration: 00:00:18.72, start: 1.020000, bitrate: 26466 kb/s
  Program 1
  Stream #0:0[0x1011]: Video: h264 (High) (HDPR / 0x52504448), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn
  Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s
  Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
 -metadata MtsExifToolVersionNumber="12.30"  -metadata MtsFileName="00017.MTS"  -metadata MtsDirectory="."  -metadata MtsFileSize="59 MiB"  -metadata MtsFileModificationDate/Time="2020"  -metadata MtsFileAccessDate/Time="2021"  -metadata MtsFileInodeChangeDate/Time="2022"  -metadata MtsFilePermissions="-rwxr-xr-x"  -metadata MtsFileType="M2TS"  -metadata MtsFileTypeExtension="mts"  -metadata MtsMIMEType="video/m2ts"  -metadata MtsVideoStreamType="H.264 (AVC) Video"  -metadata MtsAudioBitrate="256 kbps"  -metadata MtsSurroundMode="Not indicated"  -metadata MtsAudioChannels="2"  -metadata MtsAudioStreamType="PGS Audio"  -metadata MtsImageWidth="1920"  -metadata MtsImageHeight="1080"  -metadata MtsDate/TimeOriginal="2020"  -metadata MtsApertureSetting="Auto"  -metadata MtsGain="0 dB"  -metadata MtsExposureProgram="Program AE"  -metadata MtsWhiteBalance="Auto"  -metadata MtsFocus="Auto (0.155)"  -metadata MtsImageStabilization="On (0x3f)"  -metadata MtsExposureTime="1/60"  -metadata MtsFNumber="3.4"  -metadata MtsMake="Sony"  -metadata MtsCameraModelName="HDR-CX405"  -metadata MtsWarning="[minor] The ExtractEmbedded option may find more tags in the video data"  -metadata MtsAudioSampleRate="48000"  -metadata MtsDuration="18.71 s"  -metadata MtsAperture="3.4"  -metadata MtsImageSize="1920x1080"  -metadata MtsMegapixels="2.1"  -metadata MtsShutterSpeed="1/60": File name too long


  


  Well.. I'm sure I'm doing something wrong on the way of passing the content of the array to the arguments..

  


  Any help ?

  


  Thanks