JPEG is a lossy-compression method for a digital image. The images can end up in many JPEG image containers (JPEG, JPG, JIF, JPE, JFI, JFIF) depending on the parameters surrounding the compression of the image data. JPEG is actually an acronym for Joint Photographic Experts Group, the group that ...

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25 views

ffmpeg extract lossless image from video

I have a 5s fps25 mp4 video and I use the following command to extract jpg images from the video ffmpeg -i input.mp4 -r 1 -q:v 1 output_%01d.jpg The images are extracted successfully, but jpg files ...
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1answer
28 views

FFMPEG under Windows 7(64 bit) - creating timelaps video from jpg

My goal is to create a video from a bunch of jpg files. I have chosen FFMPEG (Windows 64) to solve this task The task I have more than 4k jpg files in a directory, all following the naming ...
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1answer
44 views

How do I convert a JPEG file into a black and white (1-bit) monochrome TIFF in Ubuntu?

JPEG is a scan of a text document so not much to loose in terms of colour/tones. convert foo.jpg -flatten -monochrome bar.tif gives convert: BitsPerSample 1 not allowed for JPEG. 'JPEGSetupEncode' ...
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0answers
13 views

selective reading of JPG files on ASUS projector P2B

My projector ASUS P2B is not able to read some JPG files recorded on microSD or USB. Particularly those from SONY A77 (24MP). Usually projector create subfolder with thumbnails, but not in this case. ...
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1answer
45 views

Recovered JPEG files won't open [duplicate]

I have recovered some photos with Recuva and a lot of them have been recovered fine, however there are some that only half the picture shows and the other half is just grey, then there are others that ...
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1answer
22 views

Photos do not save after I rotate them in Ristretto

The photos I am trying to rotate are JPEGs. I open them in Ristretto and press Ctrl+[ or Ctrl+]. Even if I press "save copy", the rotated image doesn't get saved to disk! Why? All files have 777 ...
4
votes
1answer
66 views

How can I tell if a JPEG was saved as Progressive?

I received a set of photographs from a photographer and need to confirm that the JPEGs were not saved as Progressive JPEGs. I have Adobe Bridge and Photoshop -- how do I check this?
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0answers
30 views

How get PPT 2010 to produce 220 ppi jpegs?

I've put together a photo collage as a single slide in PPT 2010 using a custom page size of 20"x16". When I save the slide as a jpeg, I use the Tools>Compress Pictures>Target output option to set the ...
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1answer
17 views

Lately My Photoshop Switched to Saving Images Much Larger in Jpeg format

Images I used to save in various sizes in jpeg format have all switched to being saved as much larger file sizes. My 12x18 Posters are now 25 Megs instead of 11-17Megs the next size down 6x9 has ...
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1answer
37 views

Photoshop saves images larger than they were before

For some weeks I am wondering why jpg files I save with Photoshop are extremly big like a 300 x 300 image is around 600 KB even when I reduce its quality all the way down to 0. Its all in RGB 8 Bit so ...
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1answer
75 views

Imagemagick changes page size when converting from pdf to jpg

I want to convert a pdf to jpg. The page size is not standard. (pdf here: imslp) When I convert the pdf to jpg with convert -density 300 sheet.pdf sheet.jpg, I get this: Converted image. (The ...
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193 views

How do I edit a JPEG's EXIF data with Gimp?

I would like to edit a JPG EXIF data in Gimp. Perhaps I need a plugin or something, but I don't know how to search for and download the plugin. Plus, when Gimp opens a JPG it converts it to XCF ...
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0answers
14 views

How to copy/sync pictures with certain xmp tags only

I want to copy jpg pictures to a matching folder structure (one way syncing) only when they include a certain XMP tag. For example: I have ALL my pictures in a folder structure on drive A. Within the ...
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0answers
40 views

Batch populate JPEG IPTC keyword from csv or txt file

I have 50,000-plus JPG files which I've tagged for easy lookup by user-selected keywords. The database which matches image files with their keywords is proprietary and utility-specific. I want to ...
2
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0answers
365 views

How to repair corrupt JPEG files

I have 100+ corrupt JPEG files. They were all taken from the same camera. Each file is approx 3MB, so there must be plenty of data to work with. Here is an example of one of the files. (Click here ...
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1answer
57 views

Converting NEF files to JPEG

What is the fastest way to batch convert NEF files (Nikon RAW) to JPEG? I'v tried FastStone Image Viewer and Nikon's Capture-DX on my RAM-drive but they appear to be very slow, although Capture-DX ...
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4answers
1k views

Is it possible to embed a keylogger into a jpg image?

I'm curious to know if it's possible to make a jpg file that contains a keylogger that will execute when the image is opened. I strongly believe such thing is not possible, however I'm hearing more ...
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0answers
25 views

Graphics saved in Publisher are an empty or solid black rectangle instead of an image

I create complex images in publisher, using the tool bar with text boxes, auto shapes, lines, etc. Then I save them as a picture - right mouse click ... Recently when I save my images they are saved ...
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0answers
25 views

How to upload a JPG to facebook with the caption pre-embedded?

What field do I have to put my caption into to have it show up on Facebook pre-captioned? I've been living on generating FBCMD scripts for years, but the developer has retired the project as of the ...
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1answer
322 views

How to batch convert JPEG images with jpegtran on Windows

Is it possible to batch convert a folder of JPEG images using jpegtran on Windows? I normally use the following command for one file, but I'm not sure how to apply it to an entire directory of JPEG ...
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votes
3answers
4k views

Removing Background color in Paint.net

I have a .jpg image of a text logo, it looks similar to the example image here: I am using paint.net. Now, I would like to change the image to .png, then I would like to remove all the white ...
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1answer
140 views

Convert jpeg quality to 80% using automator

I want to make a automator script that goes trough a folder with subfolders and convert all .JPEG (or .JPG) to the same JPEG, but with a quality of 80%. There is no option in Automator it self like ...
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2answers
95 views

What kind of image compression causes this color banding? [closed]

I have two images. The first is before undergoing lossy compression: Picture #1: The second is after undergoing lossy compression: Can anyone explain to me what is going on here? How does this ...
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1answer
94 views

Can't View Thumbnails when trying to open JPEG files

In Photoshop, I put in a CD with my images, when I try to select a file, I can't view the thumbnails. Only the Photoshop icon! It showed the actual picture before, and all of a sudden it stopped! ...
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1answer
57 views

JPGs seem corrupted on Arch but are good on Fedora and Windows7

I re-installed Arch on my computer (clean install). Since then when copying images (JPG) and movies (mov) from SD card they seem to be corrupted. When rsync-ing to the computer some of the files ...
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1answer
83 views

PNG or JPEG for an X-Ray without visible artifacts

A past paper question from a Multimedia Systems exam: If you had an X-Ray photograph of a leg which might be broken, which would give better compression before artifacts were visible, and which ...
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3answers
1k views

Does the JPEG file format support RGB data?

I am doing some programming that involves encoding image data using WIC. I used RGB data but WIC always treats it as BGR. I have a related question on Stack Overflow dealing with the programming ...
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0answers
176 views

Unable to open invalid jpg file

A few days ago I took pictures from my camera and uploaded them to my computer. Now the photos that I took few days ago was appear to be corrupted or invalid format. I have tried use third party ...
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0answers
132 views

fix a corrupted JPEG file? [closed]

The most frustrating thing happened, I was rotating an image on my phone from an SD card and the SD card was "suddenly removed" or knocked out of place in my phone and the image was deleted. It wasn't ...
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0answers
116 views

.png images load great - .jpg images are blurry on website

I've searched around and found lots of information about blurry images and I've implemented some of the fixes I found and it worked on about 50% of them. I'm posting Android apps and iOS apps - all ...
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0answers
268 views

Corrupt CR2\JPEG file - correct size but all zeros in Hex editor

I have an SD card with some RAW images (.CR2) and JPEG's that show the correct size but won't open (invalid image). Hex editor shows all zeros in these files. Before you answer the obvious "All zeros ...
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0answers
44 views

Saving Images as Filenames in Excel

I have a product information sheet from a supplier that needs to get uploaded into an ecommerce platform. However, the spreadsheet contains actual images in the image column instead of filenames. I ...
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0answers
41 views

How to display a fragment of an image file using Scalpel

I am working on a demonstration using Scalpel and its abilities to carve out image files. I took a small thumb drive and filled it with many small sized files until it was full. I then went and ...
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0answers
60 views

Windows: how to enable tags on old image files?

I have a lot of old photos which I want to tag. For cross-platform compatibility, I want to use IPTC Keywords for tagging. As far as I read, the native Windows photo tagging capabilities use IPTC ...
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2answers
72 views

JPGs created with Imagemagick won't display on TV

I am trying to convert a free ebook from PNG to JPG, so I can read it on my Sony Bravia KDL-40R470. This is how I converted the PNG file: convert -density 117 -quality 80 progit.pdf progit.jpg ...
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0answers
50 views

Exporting image in a specific Meter:Pixel scale from AutoCAD

I have a .DWG model which I would like to export from AutoCAD as an image (preferably JPEG) with a specific scale of (lets say) 100 pixels per 1 meter (1:100) The overall size of the image should be ...
0
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1answer
638 views

create video from single jpg and no audio

For a time lapse video project I want to create a header (with some title text). The header is just one still image which I give as jpg. I have seen other answers that produce still image video from a ...
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0answers
78 views

Check corrupted pictures on Synology?

On my computer I use the jpeginfo command for checking if my pictures are corrupted or not. I am trying to use the same command on my Synology. I tried to manually install jpeginfo on my DS212 ...
0
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2answers
290 views

Can TIFF images store embedded thumbnails in them like JPEG (JPG) files can?

Can TIFF images store embedded thumbnails in them like JPEG (JPG) files can? I noticed that in XNview, when you save a TIFF image there is an option to set the JPEG quality (of the TIFF image). ...
39
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1answer
3k views

Search for a JPG on my computer by using a smaller JPG?

I have a low resolution image that I know I have the full resolution image stored somewhere on my computer. Is there anyway to search for a JPG on my computer by using a small resolution of an image ...
0
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1answer
227 views

guess the secret text inside a jpg file using outguess in linux

How can I get the secret content of a jpg file using outguess command without knowing the passphrase ? Before all is it possible to do so, guessing the content using outguess in linux without knowing ...
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0answers
45 views

trying to open damaged jpeg images

I have jpeg images that have been recovered on my computer but I cannot open them. I presume they are damaged. I have tried using Jpegsnoop and also Format factory 3.34 but cannot open them. I tried ...
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1answer
403 views

PHPFarm with jpeg integration

So I'm attempting to get phpfarm up and running, but for some reason can't get jpeg support from gd to work... Here are my config options configoptions="\ --enable-bcmath \ --enable-calendar \ ...
1
vote
1answer
812 views

Use ffmpeg for JPEG to TIFF conversion

I would like to use Tesseract OCR with a video. With ffmpeg I can export some (.jpeg) images from a video. Can I convert a .jpeg into a valid .tiff or export directly .tiff images from the video with ...
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2answers
2k views

JPEG images are pixelated on browsers (websites)

Almost all jpg images on web pages are pixelated. I've tried other browsers and it's the same. Only JPEG images that get pixelated. PNGs display well. This comparison image preview is a screenshot ...
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0answers
105 views

FFmpeg - Converting JPG to AVI issue

I'm having an issue converting jpg files to avi using ffmpeg. I use this command: ./ffmpeg -start_number 1 -i ~/PycharmProjects/images/test/img%04d.jpg -vcodec mpeg4 test.avi My files are named ...
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1answer
4k views

How to find/detect hidden files inside JPEG file?

I'm trying to find out what is a good way to detect whether an image file has other files hidden inside it? related link: Hide files inside of JPEG images at lifehacker
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1answer
313 views

Microsoft Visual C++ Runtime error when viewing JPEG files in Explorer

I am getting the following error each time I view JPG files in the windows explorer in Detailed view. It also appears when you open the properties of the file. I'm using Windows 8. Microsoft Visual ...
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1answer
167 views

Why there are JPEG files with weird file names in folders with videos

Windows 8.1: 64-bit. Since couple of days I see that that in every folder containing a video[s], found a JPEG file with a weird name followed by a file name of a video in the folder. + Is that ...
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2answers
479 views

Append Script to an Image

I have a JPG image. I want to add/append a small piece of script(It can be of any language like PHP,Javascript,etc), but the image extension should not be changed. It must be jpg itself even after ...