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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PDF to JPEG conversion algorithm

I was wondering how the snipping tool works while cropping any vector image, for example an image on pdf file, to jpeg file. Does it use rasterization? Is there any way to convert an image on a PDF ...
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41k views

How to split a mp4 video into jpg pictures? [duplicate]

I have a video(with 4 min) in mp4 format(probably MPEG-4) that I need to convert into a lot of pictures(jpg's). I would need to take a lot of Print Screen and paste on MS Paint to manually do that, ...
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2answers
1k views

OS X says “the standard extension is” .jpeg, but according to whom?

When I attempt to save a file as "picture.jpg", OS X unhelpfully informs me that the standard extension is ".jpeg". I think the bazillion .jpg files on the web beg to differ, so where does Apple get ...
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1answer
172 views

JPG compression setting for consumer-quality vacation photos?

When I'm saving a JPG file, Paint Shop Pro (Windows) and Gimp (Linux) show a pop-up to choose the JPG compression level. The apps have something like 85 as default value, and I think reducing the ...
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1answer
3k views

How can I modify the EXIF orientation tag of an image?

I want to change the EXIF orientation tag in my JPEG images but without actual rotating of them. I want to do this to use them as a test case for an application I made. How I can do that in Linux? ...
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1k views

Gimp reports huge file size (in the GB range) when trying to export to JPG

If I load a JPG file (2-4 MB in size) into Gimp for photo manipulation and try to export it, Gimp reports the file size will be in the region of 1.3 GB! I have to export it as PNG, which results in a ...
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2answers
283 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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4answers
774 views

Losslessly compressing similar images?

I need to reduce the size of my photo library so I naturally want to compress them. Many of them are not quite identical, but still very similar (subsequent shots of the same scene). Is there any ...
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1k views

Getting N jpeg images from N-Pages PDF

I've a PDF composed by N pages. I want to convert this PDF in N jpeg images (by command line, no Php, Java or other programming languages). I'm trying to do this with GHOSTSCRIPT but the output ...
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1answer
3k views

Linux convert jpeg to bmp, xsetroot complains “bad bitmap format”, how to fix this?

I am creating a JPEG file, converting to BMP then using with xsetroot, but that is failing. 1) Make a JPEG file $ convert -size 800x600 xc:transparent \ -font Bookman-DemiItalic -pointsize ...
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How to batch-convert JPG files to uncompressed TIFF

I need to collect 1000 uncompressed TIFF files. I have a large set of JPG images, so I decided to convert them to TIFF format. The loss in quality is ok in this case for me. I used the following ...
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2answers
227 views

How to save a series of JPGs as an AVI at 30fps? [duplicate]

Possible Duplicate: How to turn images into a video slideshow with sound I have a series of JPGs that were from a video file. They are named according to their frame number. How can I put ...
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2answers
5k views

How to convert a photo to a black and white image by ImageMagick?

How can I convert a JPEG photo to black and white (not grayscale) image like output of a FAX scanner, by ImageMagick?
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1answer
1k views

brew link jpeg issues

I am trying to install opencv on Mac OSX Lion. brew install opencv I get the following error (and a few other similar ones) Error: The linking step did not complete successfully The formula built, ...
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2answers
142 views

Photoshop issue saving image as lesser filesize then reopening and saving again

This is driving me absolutely mad. I save for web at 100%. I open back up. I save again at 100%. It is bigger than the last time. It keeps doing this over and over and over it could be infinite ...
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10answers
4k views

Reducing image size on Windows XP

I have a scanned JPG file and due to high quality scanning, the file size is large. What I would like to do is reduce the image size of the file, keeping the jpg format, but losing Quality obviously. ...
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2answers
11k views

What is the difference between progressive and optimized JPEGs 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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2answers
3k views

If I convert my file to PSD to JPEG, does it remember the width and height of the picture?

So I'm doing some card invites on my computer. I'm using photoshop, and I've got it with the height and width that I want to print it out. The only problem is, I'm going to have to take the file to a ...
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2answers
12k views

Print jpg's with file names

I have MS Office 2010, Windows Paint. Prefer to print multiple photos on a page with their filenames. Any suggestions? I am using office computer so I cannot install any software.
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1answer
45 views

Missing extension - explorer issue?

In this picture, right at the bottom you can see Files of type: Then it says Pictures (*.bmp, *.png, *.jpg, *.gif) My question is, how can I add the extension .jpeg in there?
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3answers
7k views

Convert Multi-Page PDF to Single JPEG or TIFF File on Mac

I am trying to submit a paper to an academic journal. My file is in PDF form. Unfortunately, the journal only accepts papers as JPEGs or TIFFs. I can turn a single page into a JPEG using preview. ...
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208 views

Fixing texture with JPEG artifacts?

I have this texture: That I really want to use. The problem is when I zoom in to it, it is full of JPEG artifacts and does not scale nicely. I tried a few noise reducing plug ins but they did not ...
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84 views

Jpeg size difference

I have a 2560x1600 JPEG image and its file size is 2,532KB. Due to a website's upload restriction, I had to reduce the size of the image. Naturally I thought, "I'll just resize it in Windows so I can ...
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1answer
1k views

Using convert to covert multiple jpg files to pdf - pdf quality

I used the command convert *.jpg out.pdf to convert multiple jpg files to pdf. But the quality of the output pdf is very low. Is there a way I can increase the quality?
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Is there any drawback to just renaming jpeg files to jpg?

A client sent me many jpeg files that I'd like to rename to jpg. Is this just a matter of renaming them, or should I open them with an image editing program and then saving them as jpg?
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483 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 ...
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4answers
16k views

How to batch combine JPEG's from folders into PDF's

I have a about 500 folders with images inside. Is there a way I could batch convert this so that I get .pdf files that contain all images inside as pages? EDIT: There should be 500 PDF's created, ...
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1answer
302 views

GPS metadata in images

I know that in JPG and TIFF images GPS location is (can be) stored in the Exif data. Are there any other formats that provide GPS location in metadata? I looked through the PNG specification and ...
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3answers
5k views

How to make a photo bigger?

I've downloaded a photo with a pixel size of 300x366. It is a jpeg, at 27.7Kb. How can I enlarge the image's size, without distorting it? Using Paint doesn't seem to work for this.
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2answers
4k views

JPG files are too small when converted from PDF with imagemagick

I'm on Ubuntu 10.04 with imagemagick. I used this command: convert myfile.pdf -density 300 file.jpg This works well, but the JPGs are only about an inch high. How can I preserve the paper size in ...
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2answers
268 views

Image to PDF quality

I am converting multiple jpg images to a single PDF using following command convert *.jpg mybook.pdf but the pdf quality is not good. Is there a way to retain the original quality of images in ...
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0answers
640 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 ...
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7answers
6k views

How to fix an image that doesn't open in Photoshop, even though it opens fine in a browser?

Someone emailed me an image. I see it in Gmail, and I can see it in a browser, but when I try to open it up on Photoshop, I get an error saying: Could not open "XYZ.jpg" because an unknown or ...
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3answers
265 views

Arrange JPG images based on JPG compression/quality

I have been looking for a way to arrange JPG images based on the quality/compression level of the images. I want to do this so that I could select only those images which has less compression (let’s ...
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1answer
925 views

EXIF DateTimeOriginal format - disable seconds recording

the EXIF DateTimeOriginal format is YYYY:MM:DD (HH:MM:SS) per its specification. I don't want to records the seconds from the time. I want my format to be YYYY:MM:DD (HH:MM). How I can achieve this, ...
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5answers
3k views

OS X: How to perform a lossless crop of a JPEG image?

I'm looking for a simple way to losslessly crop JPEGs on OS X. Particularly, is there some way to get Preview to perform a lossless crop?
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vote
4answers
316 views

How do I explain to my mother how to convert a bunch of PNG files into JPEGs?

Mom asked me to scan in a bunch of photos for her previously, and I scanned them in as PNG files; namely because most any software package can read them, and they don't throw away any of the photo's ...
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1answer
2k views

How to make 3D images for parallax displays (like Nintendo 3DS and Evo 3D)?

How do you make 3D images for parallax displays? I really want to make content for the Evo 3D. I will be converting 2D images in post production. I already know the basic principles behind this ...
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1answer
880 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 ...
2
votes
2answers
842 views

How to open mystery JPEG file?

I have a folder that contains JPEG files that I cannot open. Here is one example mystery file. Can anyone help me to open the file or suggest a way of recovering the data if it is corrupted? [update] ...
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0answers
418 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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votes
2answers
173 views

Which file format starts with 0xAD 0xE1?

A friend of mine has a collection of .jpg that cannot be opened because they start with 0xAD 0xE1 (so says GIMP). Any idea which file format these may be?
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votes
2answers
862 views

What meta-information is contained in an image file?

I'm wondering what information is contained in an image file like JPEG or PNG. I know that most of them contain a metadata file, but anything else other than that? Anything relates to the license ...
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3answers
9k views

Automatically set default Save As… image file type to JPEG in Photoshop on Mac OS X

In Photoshop, on Mac OS X, is there a way to have the file type in the Save dialog automatically set to JPG? If not, is there an easy way to trigger an AppleScript program to set it that way? Seems ...
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3answers
181 views

Seemingly identical JPG files, though one is corrupt

I posted this question the other day: Suggestions on how to repair corrupt files The files I used in example were perhaps not the best. These are still ever so slightly NSFW, but I now have two files ...
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1answer
277 views

Paint for Windows seven 64 bits: How to change the default save format from png to jpg [duplicate]

Possible Duplicate: Is it possible to change MS paint's default save file type to PNG When I copy an image in Paint and want so save it, the default format is png. How is it possible ...
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1answer
2k views

Suggestions on how to repair corrupt files

( Warning, sample images are slightly NSFW; tattoo work shows a little bit of boob. ) Previously I had a Mac OS X sparse-bundle dmg and used DropBox on two computers. I would add to my secure ...
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2answers
5k views

A thousand JPEG images in a Word document: how can I format them in the same way?

Please suppose you have a Microsoft Word 2007 document: you have just inserted in it about a thousand of JPEG images. With the first image, you do right-click, then FORMAT PICTURE, then option ...
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1answer
331 views

Convert large JPG to zoomable SWF

I have a largeish JPG (2400x1000) of an organogram. It would be good to be able to convert this JPG into an SWF that could be zoomed with the mousewheel when displayed within a webpage. Is this ...
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4answers
153 views

How i can apply water mark on many images in a single click

I have a large collection of Books. I have all pages in JPEG format. I want to apply a text of My website transparent on each page. I have made an image by the help of Adobe photo shop. But its very ...