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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.

Metadata, or Metainformation, is data about other data. An item of metadata one can say what it is that data, usually an intelligible information by a computer. Metadata facilitates the understanding of relationships and usefulness of the data.

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How to get video duration in seconds?

How can I get video duration in seconds? What I've tried: ffmpeg -i file.flv 2>&1 | grep "Duration" Duration: 00:39:43.08, start: 0.040000, bitrate: 386 kb/s mediainfo file.flv | grep Duration Duration : 39mn 43s This what close, but it's not…
user2783132
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Email sent to me is addressed to MAIL@MAIL.COM. 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 suspected a CC, or a BCC, but nowhere does it have…
tuskiomi
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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 those parameters? Maybe there's a better way to do…
Vladimir Stazhilov
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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 available on ffmpeg? -metadata key=value …
Mohammad Hossein Fattahizadeh
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7 answers

What software can I use to read png metadata?

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 called pngmeta. But what other image software…
Johan
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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 service. Specifically the files included 3 videos…
meed96
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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 title pages, the page that is labeled "page 1" is…
YGA
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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. the free space on the flash memory is 1,717,518,336…
TheGoodUser
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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 our (Windows) networks, his Macbook always…
soapergem
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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 CSV with commas in Excel How to control CSV…
Burhan Ali
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Get mac tar to stop putting ._* filenames in tar archives

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…
vy32
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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?
David
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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 gigabytes of RAM, and pre-empts or slows other programs…
gwideman
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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 date. How can I do this?
Eugene M
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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 foobar.py Where is all that metadata stored in…
Joseph
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