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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4answers
999 views

Corrupt Jpeg Files after Burning Cd in Windows 7

Well here's a weird problem: I have a folder of JPEG images on my harddrive, and burned a handful of them to a CD using the built-in Windows 7 CD burner software. Now, I can't open those files ...
2
votes
2answers
256 views

PC to Mac picture transfer not working, done through networking. Mac cannot see the photos

I have a Windows XP Pro desktop and a Mac laptop. I connected the laptop to the PC with an Ethernet cable. I then picked the folder I wanted to transfer over and I "shared" it. I then connected with ...
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2answers
1k views

Convert PDF to JPG without Imagemagick

Is there a way to convert a common UTF-8 encoded PDF to a JPG without using ImageMagick or Ghostscript? The reason I'm asking is, that I have to replace or "simply" double layer a small part (date) ...
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vote
1answer
84 views

Most space-efficient format for image with large dimensions but few colors?

Recently I have had to scale up the dimensions of a gif image by a factor of 2, this resulted in an increase of the file size by about 8 times. While this is not a complete surprise, I can't help but ...
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1answer
6k views

What is the difference between jpeg Progressive and Optimized in photostop?

When saving a image for web and devices as JPEG, I can either choose progressive or optimized (or none). What is the difference between both and what should I use ? In my case, the image is the ...
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1answer
753 views

why does this adobe illustrator file not save as jpeg properly?

When I click save for web, and choose jpeg (or any other image format for that matter), there's this random black line that appears that's not there before. Here's the file in question ...
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1answer
61 views

How can I convert a large PDF to PNG?

I want to convert a very large PDF file (>2GB) to a PNG (or JPEG) file so that it is easier to open and look at. I want to do that without opening the PDF file since it is too large to be opened. Is ...
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1answer
317 views

creating an alpha channel for a jpeg image in paint.net

i'm using paint.net until I can afford photoshop elements. I notice that you can change the opacity slider in the layers menu opening 'properties', then it shows an image with the transparency ...
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1answer
139 views

Default file extension for picture downloads on Chrome?

My google chrome will only save pictures as KanKan (then there's some Chinese: 图秀 or something) How do I get it back to .jpeg as a default? (the drop-down menu only says "all files")
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1answer
3k views

How to convert JPEG JFIF files to JPEG Exif format?

I recently put the SD card of my camera in a Windows 7 PC and start browsing pictures on it. I noticed some were not aligned correctly and use rotate feature included in Windows Photo Viewer in order ...
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1answer
711 views

convert serveral image files to a single djvu file

Suppose I have serveral BMP image file, say 001.bmp, 002.bmp,..., 100.bmp. I want to convert these files to a single djvu file, whose first page is the content of 001.bmp, the second page is the ...
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1answer
461 views

Change background color of 1000 jpg files

I have 1000 jpg files in which all have a white background. Is is possible to change the white background color to red (for example) of all the files in order not to have to do it one by one ? I ...
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0answers
263 views

Append JPG to MPG Video ffmpeg/mencoder

I've found a lot of solutions for creating a video from a folder of jpgs, in this case a time lapse stream of photos from a camera. Thats easy, but seems to waste a lot of computing power ...
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0answers
109 views

Image optimization: Photoshop CS6 vs jpegtran / OptiPNG

Is there any difference in terms of algorithm for optimization between Photoshop's Shift+Alt+S (save for web) and jpegtran's -optimize and -progressive? It seems my images are not reduced (or reduced ...
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0answers
457 views

ffmpeg extract I-Frames, GOP to jpeg sequence

This is kind of hard to explain, so bear with me. So I'm looking for some way to export video GOP frames to jpegs. I'd like to preserve the I-Frames, P-Frames, B-Frames, etc. So that the next frame ...
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0answers
391 views

A way to perform lossless JPG edits in Adobe Photoshop CS6?

I perform lots of small edits of JPGs daily on my computer, and was wondering whether there was a way to perform cropping and rotation without the loss of quality during recompression. I know there ...
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0answers
336 views

SWF to JPG conversion

Are there any command line utilities (apart from swfrender which seems to be currently broken for big resolution output) which would allow me to convert .swf files to raster images (preferably .jpg ...
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0answers
209 views

Duplicate Images / Tags - sorting and removing

I have folders full of camera images that I have copied and backed up between my laptop, computer and external hard drive(s). I want to organise and sort them, and remove duplicates, so I have used a ...
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0answers
18 views

How to scan documents into Windows 8.1 as JPEG images?

I recently updated my computer from Windows 7 to Windows 8.1 and downloaded an up-to-date interface for my Brothers MFC-J825DW printer to accommodate scanning documents. Unfortunately, now when I ...
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0answers
8 views

How can I insert thumbnail to an existing thumbnail

I have an existing jpg, how can I add an embedded thumbnail to the jpg exif data? And after that, how can I view the thumbnail of the jpg to make sure that is insert correctly?
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0answers
296 views

How to convert PSD to JPG or PNG on Linux with Gimp CLI/batch mode (or other server-side tool)?

I've been working on a theoretically simple web service to convert PSD or AI files to jpeg, png or some web-compatible format. I was able to successfully use ImageMagic's convert -flatten sample.ai ...
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0answers
40 views

jpg repeating gif imagemagick

so this is my first post on Stack Overflow after years of being a read-only guy. This time i have hit a wall and can't really get past it and would really appreciate your positive response. This is ...
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0answers
15 views

Copy all meta tag from SRC jpg to DST jpg except thumbnail

I just started to use the EXIFTool but can't find out the way to copy all meta info from a file to another file with out destroying the destination file's thumbnail image. Is there any way to do so ?
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0answers
71 views

Selectively deleting files with same filename (raw, JPG)

I am a photographer and generate "raw" and JPG images. At a certain point in my workflow, I need to delete all the JPG images before proceeding. That's easy enough; in Windows Explorer, one can sort ...
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0answers
122 views

Change ALL times in metadata with exiftool

I have a lot of photos, taken during our last holiday, but I forgot to set the right timezone. I had a look to exiftool, and I could change the EXIF standard date times with this command exiftool ...
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0answers
95 views

Excel - How do I write a formula or a macro to copy cells to a JPG file properties?

I have over 1000 jpg files and one excel file with all the properties(metadata) for them - title, subject and tags. The excel looks like this: Number ......Title ....... ...... Subject .. ...
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0answers
58 views

iPhoto library too big - recompression of images possible?

my iPhoto has become way too big over time. I'm looking for a way to recompress it, say bringing down the size of the average image from 3 Mb to 1 Mb (just simple JPEG recompress) without losing ...
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0answers
68 views

Using jpegtran with ffmpeg via piping?

I use ffmpeg to generate a ton of jpeg images. However, these jpegs aren't optimized by ffmpeg. On average, the images losslessly compress another 10-20% when I run them through jpegtran. I don't ...
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0answers
25 views

Browser downloads jpgs, doesn't display them

My browsers (Chrome, IE both exhibit this behavior), when faced with an href link that points to a .jpg file, downloads it rather than displays it. I think perhaps something happened with file ...
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0answers
437 views

Join Audio and 2 Images Output as Video using FFmpeg and Video should be acceptable by youtube

I know this question is similar to the question here Join Audio and Image -> Output as Video using FFmpeg, But my requirement is bit more. I want to join to 2 image files with an audio file to ...
0
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0answers
453 views

Convert JPEG image to MPEG-2 Video

I am working on a digital screen unit which has a 2-3 second delay with still images, but no delay for MPEG-2 video. I have used Photoshop CS5 to export the JPEG into MPEG-2 (MP4(ISMA)), but the ...