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Questions tagged [jpeg]

JPEG or jpg is a popular image file format.

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1answer
154 views

finding a serial number of a jpg file in linux terminal

I have issues decoding my jpg file to find it'sserial number from my linux terminal thought ssh . my file and detail of command I did M5KDAN44 grep "serial number" M5KDAN44 my error serialnumber is ...
0
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2answers
269 views

imagemagick - convert not allowed [duplicate]

I have multiple *.jpeg pictures I like to merge into a single *.pdf file like so: convert Blatt1.jpg Blatt2.jpg Blatt3.jpg Blatt4.jpg out.pdf I am prompted with the following exception: convert: ...
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0answers
25 views

VPS compressing images, if under load returns 0 compression rate

I have a stupid problem.. cannot find a solution.. I have a VPS which compresses my images... 8 cores, 16gb ram... But if I send too many images at once it starts returning 0 compression rate.. Is ...
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0answers
140 views

Colibri opens instead of PDF and image files

I recently upgraded to Ubuntu 18.04.1 LTS, and some files no longer open correctly in their default applications (e.g. PDF and JPG files). Instead, Colibri opens with no content. I've confirmed their ...
1
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1answer
64 views

convert with -resample changes background to black

When I create a pdf and use convert to increase the image resolution, for some reason the background is changed to black. Here's an example \documentclass{amsart} \begin{document} \begin{center} {\...
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0answers
21 views

Reading one JPEG image from a Sony eyetoy

The Sony Eyetoy is a cheap way to get a JPEG image into a memory buffer from which I can do everything I need with the freeImage software suite. The problem is that I have tries every suggestion I can ...
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1answer
95 views

Is there any drawback to using jpg instead of png for screenshots?

OS: Kubuntu 18.04 with gnome-screenshot installed. I ran these commands consecutively on the same desktop screen: gnome-screenshot -p -d 10 -f /home/dkb/"GS$(date +%Y%m%d%H%M%S)".png and gnome-...
3
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3answers
520 views

Saving JPEG from GIMP - JPEG not recognized by other programs

I am using GIMP v.2.8.16 to combine several figures from different file formats into a single JPEG image. I'm able to accomplish this and save as JPEG, and open it on my computer perfectly fine, but ...
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0answers
35 views

mp4 videos has somehow changed to jpg format

I was thinking that I have lost some of my mp4 videos. Now I have found them as a large size jpg files. I don't know how that happened bud would like to be able to play them again. Just renaming them ...
2
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1answer
2k views

PDF to Single, Continuous JPG [duplicate]

I'm looking for a way to convert a PDF to a single, continuous JPG. I've tried: convert source.pdf output.jpg But I get all separate pages, eg: output-1.jpg output-2.jpg output-3.jpg ... Is there ...
3
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1answer
3k views

Ubuntu 16.04 LTS does not display .jpg files

I have a series of .jpg files that do not show on Ubuntu Image Viewer or as thumbnails. These are perfectly ok on Windows 32 and 64 and on Mac OS. Strangely one very old .jpg file does display ...
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1answer
1k views

How to extract a JPEG from a PDF [duplicate]

I have a JPEG image inside a PDF file, i know that it is a JPEG, because when i open the file with a hex editor i can see JFIF string present in it. How do i extract it into a separate file. The ...
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1answer
31 views

Jpg with # in name not found

I have an image on my web server called image#01.jpg. If I go to http://www.myserver.com/image#01.jpg I receive a 404 error. How I can solve?
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1answer
54 views

Can I automatically remove transparency from layers from jpegs without losing quality?

As well as being a developer, I am an artist. I make most of my artwork with GIMP and I save my artwork into a folder in jpg format. I now make sure that a transparent layer was not accidentally added ...
3
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1answer
3k views

Converting image to Jpeg2000 does not work

I try to convert an image to Jpeg2000: convert example2.png -quality 95 example.jp2 But the output is still png: file example.jp2 example.jp2: PNG image data, 2549 x 3507, 8-bit/color RGB, non-...
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0answers
64 views

Program to generate batch PDFs or JPEGs?

I have a spreadsheet and I was wondering if anyone knew of a program that would batch generate simple PDFs or JPEGs from the records in it a la mail merge? That is, I have a record that contains Title,...
0
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1answer
279 views

Apply exiftran recursivly (rotate all images based on their EXIF info)

I would like to execute exiftran on all .jpg files recursively below the current directory. exiftran -ai * does what I need (apply rotation based on EXIF info) within the current directory, but not ...
2
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1answer
91 views

Rotate all images in a directory that are of a specific geometry

I would like to rotate all images in a directory that are of a specific geometry. Can I use ImageMagick for this? If so could you help me with the code for the command prompt?
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0answers
83 views

16.04 upgrade now unable to access all jpg pics

All jpegs were OK until upgrade. Now I get a black box with JPG in it when I try to open the files and it says they are corrupt. I really cannot lose all my pics! What can I do to get them back?
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1answer
191 views

How easy is it to get Linux.Ekoms.1?

I read about this malware, one of the biggest specimens of malware on the Linux news right now. How easy is it to get? Paranoia has gotten the better of me. According to the sites I visited, it is ...
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0answers
952 views

Terminator Background image shades

I use terminator and recently, I tried to add a background image to it through the option provided in preferences, and for some reason the image that it is rendering is a bit shady and the colors are ...
0
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1answer
63 views

why are jpeg previews included with each photo in the directory?

i have uploaded a bunch of RAW photos on my ubuntu device from an SD card, and what i am finding is that in each directory where my photos are stored, there is also a jpeg preview right next to it. ...
2
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1answer
818 views

how to use specific library when building application from source?

I am trying to compile jpegoptim from source . When I try to do ./configure I have the following error Cannot find libjpeg or you have too old version (v6 or later required). I wanted to make sure ...
6
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4answers
287 views

How do I concatenate multiple JPEG images into a PDF?

I am trying to concatenate multiple JPEG images into a single PDF document. I used LibreOffice to make a great thumbnail collage, but it isn't acceptable to the agency to which I am trying to send it....
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1answer
107 views

Did a jpeg2000 file corrupt my install?

While running UBUNTU 14.04 I navigated to this web page http://www.fnordware.com/j2k/jp2samples.html and downloaded their linked example jpeg2000 format graphics file http://www.fnordware.com/j2k/...
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1answer
623 views

Error interpreting JPEG image

I'm trying to upload pictures from a microSD and some pictures uploaded seamlessly, while others did not. All are '.jpg' files. When trying to open it I received the error: " "Error interpreting JPEG ...
3
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2answers
230 views

Jpg images turn black on using cp command line

I have used the following command to copy folder containing JPEG and PNG images: sudo cp -r ~/Downloads/wallpap/ /usr/share/backgrounds/ However the JPEG images turn black while the PNG images are ...
0
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1answer
62 views

Script to remove JPG's with particular vendor tag

Somebody put their memory card into my smartphone, and suddenly (with auto-upload enabled) I have a folder full of photo's that are not mine on my Ubuntu machine. How can I delete JPG files that have ...
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0answers
115 views

Can't browse to big files and upload in browsers (chrome, firefox and explorer under wine)

I can't upload jpegs over 3mb to photo websites (society6 and blue canvas) because they do not show in the browse files box. Smaller jpegs show up and can be uploaded (900kb or so). What could be ...
1
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1answer
3k views

cjpeg fails “unrecognized file input format — perhaps you need -targa”

I'm using 14.04.1 LTS (server), I have installed the following: libjpeg8 libjpeg62 libjpeg-turbo8 libjpeg-progs libjpeg-turbo-progs The image file in question returns this with the file command (I ...
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0answers
120 views

how to add georeferencing to a jpeg file

First of all, I'm completely new to Ubuntu. My Garmin handheld GPS is recognized by Ubuntu and I am able to access the file. I wish to add a Jpeg map to the device and I'm running into problems. I ...
2
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1answer
274 views

jpegs created by Gimp unable to be read

Just upgraded Ubuntu to 14.04 and Gimp to 2.8.10. Have used Gimp for photo editing for some years with no previous problems. Now when I edit a jpeg photo and export to jpeg or even overwrite the ...
3
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2answers
2k views

Merge multiple JPEGs into one Video

I am capturing images from a web came in 1 second intervals. I would like to find a way to create a video of these images. Since the camera is still and there can be long periods of time when the ...
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0answers
947 views

How to take screenshot in jpeg format using ubuntu tools only

i need to develope a cpp software to capture screenshot ( in jpeg format ) and send images's bytes through a socket. I created correctly the server socket but i don't know how to take a screenshot ...
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2answers
148 views

How to create a HDR file from set of image files?

I have many JPEG image files for the same scene with different exposure setting. How to create HDR file using them in Ubuntu 12.04amd64.
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1answer
750 views

Nautilus crashes when viewing directory with .jp2

Nautilus crashes whenever one tries viewing a directory containing jpeg 2000 files, I suspect because it tries to create a thumbnail and fails (I'm using 13.10, and you can probably reproduce this ...
23
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4answers
112k views

GIMP 2.8 doesn't allow to save usual image file formats (jpg, png) via Save dialog

I used to save images as usual image file formats (jpg, png) by pressing Ctrl+S or Ctrl+Shift+S (Save or Save As dialog). Now in version 2.8 GIMP doesn't allow it anymore: you can Save only as .xcf ...
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1answer
461 views

Converting PDF doc to image as preserving the PDF quality at image?

I have looked to the site and find convert like programs and used them however I cannot preserve the quality of the PDF file. I have changes the options for better resolutions but this time the size ...
7
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2answers
5k views

Avoid “save for web” in Gimp

Previously Gimp could directly open and save JPEG and PNG-images. Since Ubuntu 12.10 Gimp is upgraded and requires me to save via a "save for web"-dialog. I have several issues with this dialog and ...
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votes
3answers
37k views

How can I read and remove meta (exif) data from my photos using the command line?

Just looked this up. Figure I'd share it here for future reference.
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6answers
185k views

how to reduce size of an image from 31.1 kb to between 15kb - 20 kb

As per a requirement mentioned here the size of photos submitted should be between 20kb-50kb. I have my scanned photos which have been cropped but the sizes are still ~139 kb. If I reduce the pixels ...
229
votes
7answers
239k views

Jpeg files to pdf

I have many jpeg files in a directory, and I want to convert them to pdf and concatenate them together to make a document. How can it be done? I'd prefer the command line, as it will be faster.
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6answers
63k views

How to add support for the JPEG image format

After installing Imagemagick, I've tested it with jpg image, like this: identify 1.jpg But, I got this result: identify: no decode delegate for this image format `1.jpg' @ error/constitute.c/...
7
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2answers
1k views

How to save .jpg NOT .JPG [closed]

When uploading photos from my iPhone to use for eBay they are automatically saved as .JPG (all caps). However eBay only recognizes .jpg. So I have to manually go back in and rename all the files with ...
3
votes
2answers
690 views

Too many images in one directory

I have a directory with half a million JPEG files and it can't be opened in Nautilus. What is the simplest way to see the previews of these images?
2
votes
1answer
2k views

Epson scanner requires libjpeg version 6 -where & how can I find this?

Using Ubuntu 12.04 LTS Release. I installed Epson Image Scan! and apparently there's a known problem that doesn't allow saving scans as jpeg unless a lib is installed. I quote the FAQ: ----- quote ---...
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2answers
32k views

Convert PDF to image

I'm trying to convert a PDF file (it's a book) into an image. When I using convert like this convert book.pdf book.jpg or like this convert book.pdf book.png then I get this warning Warning: ...
1
vote
1answer
118 views

JPGs downloaded from Facebook unrecognizable to Shotwell

For some reason, Shotwell is unable to import or view jpg files downloaded from Facebook. (I doubt that Facebook has much to do with the issue - just mentioning my specifics here). I hit the download ...
3
votes
0answers
556 views

Eye Of Gnome with blank background in place of image, except in full screen mode [closed]

When trying to open image files with Eye of Gnome, it only displays a window with a blank background in place of the image that can be zoomed and rotated. It only displays the image in full screen ...
4
votes
2answers
5k views

How to troubleshoot photo import failure with Shotwell?

I can't get Shotwell to import my photos. They are all normal JPEG files from digital cameras, about ten thousand in total. How to I continue troubleshooting this, and get all my photos back into ...