Questions tagged [metadata]

Metadata is commonly referred to as "data about data", and is often used for cataloging, indexing, and managing files in a computer.

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24 views

Using ffmpeg, is it possible to convert a blu-ray folder to a MKV file and add chapter titles in one go?

From time to time, I have to convert the files which are referenced by a playlist from a blu-ray disc to a MKV file. I normally use ffmpeg under Windows in a command line like the following: "C:\...
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25 views

How Can I Edit a Video File's “Comments” Field?

If you open a Video File using VLC, and then press Ctrl-I (Media Information), you can then see a "Comments" textbox on the bottom, and some more textboes for other fields. Can FFMPEG Edit ...
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47 views

What makes a valid .mp4 video?

I am downloading back to back some .ts video chunks from a website and saving them on the same file. When I try to upload this file to sites like twitter and facebook it doesn't accept it as a valid ...
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How to include multiple tags of the same variety (e.g. multiple artists) when converting to aac (m4a) using ffmpeg

I have no problem encoding with ffmpeg, in fact most of my files are perfect, tags, cover art and everything. But for most songs with multiple genres, multiple genres converge into genres like ...
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Remove audio *only* from an MP3 file

I'd like to remove audio from an mp3 file, while leaving its metadata intact (an ID3 tag, v2.3 in this case). I'd like to do this in bulk, against many files, if possible. Are there any tools that can ...
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435 views

Why is there no tags option in properties?

I want to edit a file's tags so I can organize them. All the tutorials I could find say I can tag files like this: But on my computer, it looks like this: How can I fix this?
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Can ffmpeg/ffprobe be used to collect and batch save video information (frame height, width, rate, etc) to the video files' metadata?

There's a related question at SO, but that's about exporting the metadata to a text file. And here is syntax for adding metadata back into a video file using ffmpeg. So I used this syntax to export ...
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30 views

How to share photos sent as files on Whatsapp from an iPhone or Mac without losing quality or metadata?

I tried the method suggested here to share photos from an iPhone without losing metadata nor quality. I selected the photos to share, saved them to "Files", opened Whatsapp and browsed my ...
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Preserve Date Created when Exporting Photos from iPad to External Drive

Desired behavior I want to be able to view photos through an external solid state drive with their Date shown as when the photo was taken. Current behavior I select a photo in Photos, click Save to ...
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Windows File Explorer Does Not See Added Meta Data

I use Foxit PDF to read and comment on PDF's and I have a PDF metadata editor that allows me to add custom metadata to the Foxit PDF files. So I add the custom data but when I view it in the Windows ...
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Reasons for metadata sometimes not being updated while actively writing

We have a system that monitors files, more precisely log and csv files. Both files are actively written to unfortunately I don't have access to the system that writes to the files, so I don't have ...
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How can I pass chapter data to multiple streams using the tee muxer?

I'm trying to transcode several videos from their original format into 4K and 1080p HD MKV and/or MP4 containers. The original contains chapter info, but no matter how many incarnations of ffmpeg ...
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108 views

Linux filesystem with metadata on SSD and file data on HDD

When using an SSD (flash) cache on a HDD (hard disk) filesystem (using bcache or lvmcache on dm-cache), it can happen that some of the blocks necessary for some global operation (maybe a find) are ...
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35 views

BTRFS partition vs subvolume metadata size

Currently, I have two separate BTRFS partitions on my system - A 20gb root partition and a dramatically larger home partition. I am wondering if I want to change the home partition to a subvolume of ...
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59 views

How to create playlists of local media files without relying on paths?

I'd like to create playlists of locally stored media files, and synchronize these playlists between my devices (desktop/laptop/phone.) However, there's one major point of friction: due to some changes ...
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Windows-Tags in .m4a metadata

In Windows 10 it is possible to add tags to a number of file types, including .m4a files. What I mean are these: I would like to read those tags programatically, but I have found nothing that tells ...
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How to increase the byte size of a file without affecting content?

Is there a way to easily and arbitrarily increase the byte size of a file without corrupting its content? For instance, by inserting dummy bytes. The file for my use case is of type png. I am on OS X, ...
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Extract mkv metadata / headers into a file

I've got several thousand mkv-files. I need to extract 2 metadata information of these files into a list, specifically the file resolution (e.g. 1920x1080) and if exists (!) the information the aspect ...
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120 views

ffmpeg conversion MOV to MKV

I would like to convert a MOV file to a MKV file, using the exact same codec for audio and video. Therefore I'm using the following command ffmpeg -i input.mov -c:v copy -c:a copy output.mkv The ...
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138 views

How can I extract timecode from an MXF file when transcoding to h264 with ffmpeg?

I am trying to transcode from MXF files containing a DNxHD stream to h264 mov files. I need to preserve the timecode stored in the mxf files, however ffmpeg seems incapable of viewing this metadata or ...
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23 views

Reset metadata for a specific stream only

In my usecase I'd like to recode audio streams into a different format with ffmpeg. The source files (MKV) contain a video stream, two audio streams and three subtitle streams as well as chapters. ...
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48 views

Copying filesystem metadata (modifyDate etc) from one file to another

I´m reconverting my old files, and using the following code to copy metadata from the old file to the new one: for %%f in (*.mp4) do ffmpeg -i "%%f" -i "%%~nf_1.mp4" -map 1 -c copy ...
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PowerPoint is removing image metadata. Can this be changed?

I realized that PowerPoint is removing all image metadata (PNG). In my case the metadata contains the data from which the image was generated. (chemical structure). The idea would be to put these ...
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99 views

Windows Explorer (windows 10) crashes when rename metadata related to “track number” for FLAC files

The title pretty much says it all. I am trying to change the metadata for some FLAC files. I have tried editing via the properties menu and also via the details menu at the right. If I change the ...
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118 views

Incorrect Album Artist and First Track in Plex

I ripped my parent’s Christmas CD collection as FLAC files with Windows Media Player. The first track of every album is just titled “Track 1” and the album artist of every album is “Various Artists”. ...
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28 views

Issue while trying to just change the metadata through ffmpeg

Im just a beginner trying to fix audio metadata in an mp4 video. I want to change the audio language code from German to English. Issue I encounter is that the output file always has changes done to ...
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30 views

What data is shared between browsers?

I will set the stage - I use Google Chrome and Firefox. On my chrome I am signed in with all my accounts and have multiple adblockers, tracker blocker, HTTPS only plugins etc. I usually use Firefox ...
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43 views

Is map_metadata necessary for copying audio files with ffmpeg

Does it make a difference using -map_metadata for copying audio files with ffmpeg or can it be omitted because it is this the default already? ffmpeg -i track.m4a -c copy -t 10 -map_metadata track-10s....
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30 views

Windows Explorer default file arrange mode for folders with media files

Wondering if it is possible to disable the default file tags that we are presented with in Windows Explorer when dealing with folders that contain media files. By default in Windows 10 if a folder ...
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158 views

Adding Chapters to MP3 file with fluent-ffmpeg (or adding metadata file)

I'm trying to add Chapter marks to an MP3 file using the node.js package fluent-ffmpeg. Normally with FFMPEG you would load a file containing the metadata, but I can't find an option to do so with ...
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97 views

How do you properly add USLT lyrics metadata with ffmpeg?

Can you add lyrics metadata to an existing audio file with ffmpeg without it being all jumbled up? It works just fine transcoding with ffmpeg but if I have an existing mp3 file that I want to add ...
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518 views

Excel: How to show a floating text box only when I select the cell?

There's a type of text box in an Excel file that is associated with a cell and appears only when you select that cell uniquely (e.g., by clicking on it or moving to it with cursor keys).  Hovering ...
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Windows 10, ffmpep 4.3.1 64bits, option -F FFMETADATA not working

I'm using Windows10 and FFMPEG v4.3.1 64bits. I have an AVI file with this metadata : General Complete name : myfile.avi Format : AVI Format/Info ...
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701 views

Where does Groove Music store playlists?

I've set up a clean installation of windows 10 but i have my old disk image backed up, I restored all the music by simply adding their folders back but I also want my playlists, anyone knows where ...
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19 views

Saving metadata in png in Adobe Photoshop CS3

I am a Windows user. How can i save metadata in png file. Does Adobe CS3 support this? I've keyed in metadata and saved it but the metadata is missing
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114 views

Keeping metadata in FFmpeg image sequence to video

When creating a video from an image sequence with FFmpeg, how do I also copy the metadata from the first image in the image sequence (within reason: creation date, GPS coordinates, etc.; maybe not ...
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59 views

File metadata ignored for some files in search in Windows 7

Using Windows 7. It seems like the metadata of some files is being ignored, although the metadata of most files is found just fine. (These problematic files can be found quite easily by file name.) I ...
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47 views

Delete specific streams from a media file without creating a copy of the media file

The context I have a file with four streams: 1 video stream, 3 audio streams (see proof below). $ ffprobe -v quiet -of flat -show_entries stream=codec_type,index:stream_tags=title 'my_input_file.mkv' ...
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283 views

How can I use the Command Prompt to find the following metadata of files: Authors, Last save by, Owner, Creator?

I am able to extract metadata using the following prompt: wmic datafile where name="Q:\\filename.docx" list full And I can see who owns the file or folder using this prompt: dir øa /q But I ...
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82 views

Does WMP or VLC have a way to choose whether or not to obey rotational metadata?

Does WMP or VLC have an option to choose whether or not to obey rotational metadata? For example, here is a video http://ge.tt/78hJIb63 4 seconds , 10MB I recorded it with my mobile phone ...
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32 views

Remove embedded subtitle streams from media file without “streaming/remuxing”

This related post gives a solution: mkvmerge -o output.mkv input.mkv -S # remove all subtitle tracks This other related post gives a solution: ffmpeg -i input.mp4 -c:v copy -c:a copy -map_metadata 0:...
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979 views

Share Photos from mobile without losing metadata? [closed]

I am frequently* sent phone-made Photos from trips from other people's Smartphones and likewise want to easily share new photos from trips together with them. The standard methods have long been ...
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What could be causing some of my Photos/Images to have 'Title' and 'Subject' entries, in their Meta Data, when nothing has been entered by myself?

I have taken a load of photos, with the default Camera App on my Mobile/Cell Phone. These photos are also Synced up with Google Photos. I have then downloaded these photos to my computer, directly ...
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53 views

Relative position of bits in the “Bit-sequence” of a file

Every file is written as bits & bits & bits &....so on. Also, every file has 2 types of metadata: OS metadata: file location, owner, permissions etc. which are written in the OS itself(...
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How can I add a release date of a podcast to the filename or file metadata?

I use gPodder to download podcasts. For example, I have downloaded the podcasts for EconTalk and this is the first podcast: gPodder tells me that this podcast was “Released” on “2006-03-16.” How do I ...
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44 views

Record video where star time metadata timestamp has millisecond precision

I have explored the metadata of an iphone video with exiftool using for example this command exiftool -a -u -g1 video.MOV. It includes the date of the video as 2020:06:20 00:53:30, but does not have ...
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25 views

How to get a duration in FFmpeg that corresponds to the number of frames that can be read?

I'm a developer of the Python MoviePy package and I'm trying to rework how we import file information to be more robust. I need to get the duration of any videofile such that when multiplied with the ...
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1answer
363 views

Batch copy creation date in .MOV video file to created date

I have hundreds of .MOV video files recorded with my iPhone. Their "created" and "modified" file dates are the date where I moved them over to a folder on my Mac. "Media information" in VLC confirms ...
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27 views

Getting Mac movie info from command line

Is there any way to get movie info from movies in the TV (née iTunes) app on the Mac? I’m not talking about tech info from ‘mdls’; I’m talking about the info in the Info box from the app: i.e, ...
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98 views

Delete “last opened” metadata on files on external hard drive

So I messed up. I was about the upload a file to my friends external hard drive when I saw a folder called "funny party images" - I opened it. And yeah - it wasn't party pictures! It was something ...

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