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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (95)
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18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
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Sur d’autres sites (6545)
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Why is FFProbe (using fluent-ffmpeg) returning incomplete and inaccurate metadata ?
18 avril 2024, par volume oneI 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.

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How to expand bash array into arguments correctly
12 avril 2022, par alvgarciI'm working on a script on Bash.


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


Steps here :


- 

-
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


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avcodec/adpcm_ima_{apc, ssi, oki} : replace while() with for()
18 avril 2020, par Zane van Iperenavcodec/adpcm_ima_apc, ssi, oki : replace while() with for()
Per discussion at https://ffmpeg.org/pipermail/ffmpeg-devel/2020-April/260854.html
Signed-off-by : Zane van Iperen <zane@zanevaniperen.com>
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>