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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Email sent to me is addressed to [email protected]. How is this done?
I was recently sent a scam email, and for giggles I opened it up to read it. Very plain, and not much effort thrown in.
I noticed something peculiar; this email was not addressed to me.
At first, I ...
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7
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How do I use ffmpeg to get the video resolution?
I am trying to get resolution of the video with the following command:
ffmpeg -i filename.mp4
I get a long output, but I need just the width and height for my bash script. How should I filter out ...
81
votes
7
answers
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What software can I use to read png metadata? [closed]
I know that I can create a simple little Qt based application that adds and read
png metadata, using the QImage.setText(...) and QImage.text(...).
That metadata can then be read with a linux command ...
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79
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4
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Strip metadata from all formats with FFmpeg
How can I remove all metadata from all formats via FFmpeg?
I can just set special metadata for each format per man ffmpeg. Any option or method to clear all metadata and strip media from all metadata ...
71
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3
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Windows File is ludicrously huge and I cannot unzip it
I use an online file backup service (Backblaze) and recently got a new computer. Several files on my old computer were too large to move via my usb drive so I decided to download them from my backup ...
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12
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How to change internal page numbers in the meta data of a PDF?
I have a pdf document I created through non-Acrobat means (printing to pdf, then merging a bunch of pdfs), but I'd like to manually change the page numbers (i.e. the first several pages are simply ...
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56
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6
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Doesn't metadata occupy any size?
I put 4096 characters in a text file and save it. Since every character is 1 byte, the Size of the text file must be 4K bytes. As you see below that's OK:
I connect my flash memory to my computer. ...
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51
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Get mac tar to stop putting ._* filenames in tar archives [duplicate]
Possible Duplicate:
Why do I get files like ._foo in my tarball on OS X?
I create autoconf scripts on a Mac. When tar runs, it puts all of these ._foobar names in the archive:
libewf-20110312/...
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Is there any way to prevent a Mac from creating dot underscore files?
At work we're letting one of our very tech savvy clients actually help out a little with a few development projects specific to him. However, he uses his own personal Macbook, and as he edits files on ...
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What is the "sep=" metadata you can add to CSVs?
While trying to find out how to get CSVs to open correctly in Excel on a Spanish PC (belonging to a customer) I found many answers recommending using sep=, at the top of the file:
Easiest way to open ...
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41
votes
5
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Using ffmpeg to copy metadata from one file to another
I want to use ffmpeg to copy all meta data not associated with core aspects of a video (frame rate, resolution) from one video to another. Is there a simple way to do this with a single command?
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7
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How to prevent Windows Explorer from slowly reading file content to create metadata?
We have directories containing hundreds of video files. When using Windows Explorer (Windows 7 64 Pro) to browse and rearrange these directories, Explorer slows down to an unusable level, uses ...
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36
votes
11
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How do I batch change the date taken information in EXIF data?
I use F-Spot to manage my images. For one set of images, the dates somehow got messed up and they all are marked as September 1st 2007. I'd like to change the date taken information to a different ...
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votes
3
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Where does metadata go when you save a file?
Say Johnny makes an EMPTY file. It is called foobar.py. When Johnny allows it to be executed, he runs chmod 755 foobar.py. The file now has the metadata of
-rw-r--r-- 1 johnny staff 0 Dec 27 22:53 ...
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Determine video bitrate using ffmpeg
I am trying to determine video bitrate(For transcoding) using ffmpeg command,I tried following command.
ffmpeg -i 28572615.wmv
and it produces the following output
Input #0, asf, from '28572615....
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votes
4
answers
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Change rotation flag in MP4 video (without losing metadata)
I just want to change the rotation flag in a .mp4 video file.
Many similar questions exist, most answers suggest using
ffmpeg -i input.mp4 -map_metadata 0 -metadata:s:v rotate=90 -codec copy output....
- 1,009
23
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9
answers
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How to make Handbrake preserve capture time / creation time?
Handbrake is an awesome video compression tool, but it doesn't seem to preserve the original capture time after a video is compressed. Any idea how to fix this?
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4
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How to use ffmpeg to add metadata to an AAC file without reencoding?
I'm using ffmpeg to extract just the audio stream from a video file:
ffmpeg -i video.mp4 -vn -acodec copy audio.aac
This produces a clean audio file but without any metadata.
To add metadata, ...
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23
votes
7
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Can't edit MP3 tags like artist or title
I try to edit the tags of MP3 files and I found that some of the file cannot be edited.
Here's the procedure when I edit the information of the MP3 file:
Right click the MP3 file in Windows Explorer ...
- 341
22
votes
5
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Does Google Picasa store metadata in the picture files?
Does Google Picasa store metadata in the picture files themselves? If so, what metadata is actually stored inside the files? (as opposed to Picasa's internal database)
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Is there a way to get file metadata from the command line?
Is there a way to get a file's metadata from the command line in Windows XP and above?
Particularly, I'm interested in getting the information one might normally see on the "Details" tab of a file's "...
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How to find the JPG quality?
When I save a JPG file with GIMP, I can adjust the quality I save it at, from 0-100 (I use 89). It seems like I've used an app to see what this number was on saved file but if I did I can't for the ...
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Is there something like EXIF for video?
Pictures in jpeg format use EXIF to store metadata, in case you rename the file or change its timestamp is very useful. However, I don't know if that is the case for video files. Is there any kind of ...
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5
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How do I get the meta-data of a video file?
How can I get metadata, such as frame rate, resolution, audio and video bitrate, from a video file? Can this data be obtained from players like VLC and Media Player Classic?
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How are the file metadata stored in Windows?
(I'm using Windows XP but I guess it's similar in all the recent versions of Windows.)
When you create for example a new empty text document, you'll find in its properties that it has size of 0 bytes....
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18
votes
7
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Which protocol to send the most possible data through satellite?
I am working on a project with an Internet connection through satellite with only 130kB/day (if I use more it is very expensive).
I want to send as much "useful" data as possible every day, ...
- 291
18
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7
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Editing JPEG EXIF properties
How can I edit EXIF properties of JPEG files on a Windows machine?
Some image editing utilities handle the Rotation property wrong, which leaves me needing to make manual edits after rotating images ...
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How to reuse/extend etckeeper's metadata engine for git control of non-/etc filesystems, or extend git natively with said capability?
Update: 2020-09-22
After having used it a while (years?), etckeeper+git does not meet the requirements I seek.
Overview + question
I want etckeeper-like filesystem metadata control for non-/etc, git-...
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votes
4
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Gif image EXIF tags
Is it possible to set a gif image's tags using the Windows properties panel?
It currently seems working on jpeg, but not on gif files.
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5
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Is there a command analogous to afinfo for videos on a Mac OS X?
Mac OS X has the command afinfo to fetch audio file info. Is there a similar command to fetch video file info for videos (.mov, .m4v) other than the mdls command?
- 1,438
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Can a file appear to be modified before it was created? [duplicate]
Is it possible to have a file which has a modified date that is before its created date? What actions would cause this event to occur?
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3
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How to add new — and non-defined — metadata to an MP4 file?
I have been trying to understand how to add some additional metadata to a MP4 file. I understand how to add metadata, like this:
ffmpeg -i bb.mp4 -metadata title="my title" bb2.mp4
But what ...
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votes
4
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How can I remove the EXIF tags/metadata from several images at once?
I have a 6,000+ photos. I want to remove a the tags from these photos.
I know how to do it one photo at a time. But wondering, what is the way to do mulitple files at a time?
Thanks
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List full timestamps of files in a tarball
I have a large tar archive and want to see the exact (nanosecond) timestamps that are stored for each file in the archive. In case it's relevant, the tarball is in POSIX-2001 format (tar --format=...
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How can I add metadata to NTFS files/folders?
I want to tag different file types (i.e. .pdf, .epub, .iso, .bin, folders,..) using the same descriptive fields. For example i would like a metadata field "type" which would be "eBook" on pdf- and ...
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votes
7
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How to show file names instead of metadata title in VLC?
Metadata from various artists and music websites is a gigantic inconsistent mess and much harder to edit than filenames. To actually know which file is currently playing, I would like to see it in the ...
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Tool to view video/audio file information [closed]
What is the best tool to obtain the media/codec details of any video/audio file?
I use Windows, but feel free to suggest for your favorite OS too.
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How to prevent recovering metadata when using ExifTool?
When using exiftool -all:all= file.pdf this message appears:
ExifTool PDF edits are reversible. Deleted tags may be recovered!
Can tag recovery be prevented when ExifTool is used? Can it just wipe/...
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1
answer
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How Much Space Do Empty Files Consume?
Windows reports both, empty files and folders, as taking up 0 bytes. Surely it takes something to store the file name, attributes, date [created/modified/accessed] etc.
How is this weighted?
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4
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Changing the date of an image file
I'm going through the thankless task of scanning old photos and archiving the digital copies.
Is there a way to modify the date of scanned image files (typically .jpeg) to more closely match when ...
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Command line tool to write flac, ogg vorbis and mp3 id3v2 meta data?
Is there any command line tool that can write all three formats/containers? I've already searched but could not find anything that does the job.
So far I'm using vorbiscomment, metaflac and id3tool ...
- 1,434
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votes
3
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saving notes against a file on linux
I want to save notes against a file on linux. I want to save meta data about a file, because the file names are restricted in max length.
so how to save notes or comments about a file on linux so ...
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votes
2
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How to remove the meta data of all files within a folder and it's sub folders?
When a right click a file and hit details, it shows me Date created, date modified, owner, and computer.
I have a folder that I want to send to someone.
Basically I want to remove the Date created, ...
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11
votes
5
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After an MP3 file has downloaded is it possible to see where it was downloaded from?
Is it possible to see where a MP3 file was downloaded from? Like if the file was downloaded from Google, Safari or other sites?
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4
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VLC is showing a different title than is in the mp3 metadata
I have a bunch of mp3 music files, complete with metadata. Windows Explorer and Mp3Tag both show the title as being the actual name of the song. However, when I play the files in VLC, it shows the ...
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What kind of metadata can be stored in m4a files?
I have a collection of voice recordings from my Android phone, all stored in .m4a files. I would like to know the date of the recording, but the file timestamps have all been set to the date at which ...
- 1,195
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votes
3
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Windows Media Player Changes not reflected in File Explorer
Basically When I update song info such as artist, title etc in windows media player, the changes are not made to the mp3 file itself.
I have just spent hours ensuring the songs have the correct info ...
- 201
10
votes
1
answer
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Prevent Windows Explorer from trying to extract metadata
Windows Explorer (Windows 7 x64) crashes when it sees allegedly corrupted .wav files.
I'm dealing with this problem and the hotfix outlined in "High CPU usage in the Explorer.exe process when you open ...
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9
votes
2
answers
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Is the origin of a file traceable? If it is how can I sanitise it?
If I copied a file from my PC to a newly formatted USB flash drive, took the file to a public PC and public Internet connection, created from there a new email, created a new account on an uploading ...
- 101
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votes
5
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Mail client sender icons
Why do email clients (for example, Windows Mail) display icons (sender pictures) from several companies?
As you can see, Microsoft, Tubmlr, Paypal provide pictures, as well as Go Daddy, Amazon, ...
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