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Questions tagged [jpeg]

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 created the compression standard for JPEG.

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Which cwebp parameters to specify to avoid loosing quality when converting pictures from JPEG? [on hold]

I would like to convert all the pictures I've taken with my phone and DSLR cams from JPEG to WebP to save hard drive space. But I would like to make sure no quality is lost. What parameters should I ...
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How to slow down a timelapse mp4 created from jpgs with ffmpeg

I'm creating a timelapse from a bunch of jpg files on Windows 10: C:\dev\ffmpeg-20180219-acdea9e-win64-static\bin\ffmpeg.exe -r 24 -i Base000%3d.jpg -s hd1080 -vcodec libx264 timelapse.mp4 The ...
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49 views

Reading animated JPEG (“MVIMG_”) in Windows 10

My Android phone is capable of taking some kind of "animated" JPEG pictures, quite bcause I couldn't use that feature the proper way. Now that I have cable-transferred my pictures to my desktop to ...
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1answer
52 views

Create video from bunch of JPEGs

I have a CCTV camera that uploads JPEG images (.jpg) to an FTP server when it detects movement. We seem to get quite a few images, so I would like to make them into a video to ease viewing. I've done ...
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2answers
24 views

Different size when scanning depending on the method (USB, WiFi direct to Mac and PC)

I scanned a paper today using three different methods: USB inserted into the scanner (an HP Color LaserJet MFP M477fdw) WiFi direct to Image Capture on a Mac WiFi direct to Scan on Windows 10 The ...
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30 views

Is replacing PNGs with JPGs the solution to generating reliable images in PDF files?

I generated a PDF from a document that contains many images, mostly JPGs, but some PNGs. In the doc (Libre Office .odt), the page in question looks like this: When I "exported" the document to a PDF,...
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18 views

Tiff or JPG in PDF?

I have a bunch of scanned PDF (e.g. picturebased pdfs). When I run them through "pdf optimizers" online they frequently are reduced 70-80 % in size with hardly any noticeable difference in quality. I ...
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120 views

Display a fullscreen slideshow of jpegs + animated gifs of differing animation durations (linux)

I have a folder full of various jpgs and animated gifs (which are of variable resolutions and variable animation lengths). I would like to create a scaled fullscreen slideshow of these images, where ...
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2answers
71 views

How do I reveal “hidden” image noise

Computer images can hide compression noise that's barely noticeable when looking directly at it, but if you tilt your laptop screen you see the noise, eg. the edges around the cans in this image. ...
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4answers
36 views

Save PDF as JPEG, but only specific pages not full pdf

I have a pdf of +50 pages. I want to save page 25 as a jpeg. Is this possible to do without saving the full pdf as jpeg?
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Using Windows 10, how do I view a really tall stack of photos as a single jpg?

So I got a jpg image file, which looks like a long sequence of individual images in sequence and saved a single file. When I open up the file to look at it in the Windows "Photos" app, all I see is ...
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71 views

Convert psd file into one image by workspace

I want to extract an image for each workspace in a psd file. Example with this psd file: With convert (convert b.psd -flatten b.png) command or python wand lib, i am able to produce an image with ...
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31 views

Image Resizer change image color tone

I have a problem when i using image resizer for windows. After resize an image, the image color tone change red. The image had edited by Capture One 10 before. Is this a program bug of "Imange ...
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2answers
1k views

How do I associate JPEG files on Windows 10 with IrfanView (or other program)?

I was trying to associate from within IrfanView options, but it didn't help. When did this with "Run As Administrator", it didn't help either. The right click menu doesn't contain "Use Always" ...
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119 views

Is it possible to view the data received from a JPEG RTSP stream in VLC Media Player?

I'm streaming JPEGs to VLC via Live555, but there are a few issues with how they are displayed, I want to be able to view the data of a frame in order to compare it with the original image and ...
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1answer
1k views

Convert TIFF to JPG using FFMPEG keeping same DPI

We are using FFMPEG in our java application and I am trying to convert a tiff file to jpg but the requirement is to keep the SAME DPI as it has in original tiff file. I am new to FFMPEG and tried ...
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1answer
291 views

Gimp Portable and file-jpeg

I have just installed GIMPPortable 2.8.22 (32-bit) on a Windows 7 Pro (64-bit) machine. I cannot open or save JPEG files. It seems there is something wrong GIMP trying to load the file-jpeg.exe file,...
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48 views

Windows Thumbnails have jpg artifacts

I want to make a set of card pictures for making a card game in Scratch (which probably won't have rules; any card may be moved anywhere, and will be aligned to some certain rounding numbers, and the ...
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1answer
50 views

What's the best method for JPEG text manipulation?

I have a relatively simple graphic; a technical diagram with various bits of text throughout. The text is in another language (Czech/Slovak). It's printed clearly enough to be accurately ...
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0answers
173 views

Importing JPEGs into Acrobat ruins edges

I'm working with a PDF in Adobe Acrobat XI Pro, and trying to import a relatively high quality JPEG. Despite disabling any compression-related options that I can see, the edges of the imported image ...
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2answers
147 views

How to find corrupted JPEGs - causing 100% disk usage

I have a particular folder on a secondary hard drive with a couple of hundred JPEG files in it (specifically Steam screenshots). A couple of days ago I noticed that, with thumbnails enabled, I can no ...
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0answers
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How to debug why Chrome browser on Mac giving JPEGs a red hue?

I'm having a strange issue on my Mac OS X Sierra 10.12.6 when using Chrome Version 60.0.3112.101 (Official Build) (64-bit). I don't see it in Safari, nor in Photoshop CS6. All JPEG files have an ...
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1answer
404 views

Can PNG images contain embedded thumbnails like JPG files?

Can PNG (Portable Network Graphics) image files contain embedded thumbnails similar to how JPG files can?
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1answer
105 views

Imported images to Photo turn grey/gray after loading

Importing combined jpeg /raw images from my Panasonic GX7 to my iMac using Photo seemed at first to be going well but then the full images started being covered over by grey/gray rectangles of ...
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1answer
161 views

JPG EXIF - Where from property

I made an image with my Samsung s7Edge. I emailed it to my gmail account. Then I downloaded the image on my Mac. I checked the properties, and there was this property named Where from: That had a ...
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278 views

damaged jpg: how do I recover it?

I found on my disk some damaged jpg, they look like this: Any idea about how to recover them? Here is damaged image file:
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1answer
86 views

Why are we still using JPEG? [closed]

JPEG was released in 1992. That's like 24 years back. Why haven't we shifted to some better format with better efficiency (say at least JPEG2000) yet?
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206 views

Batch convert multi page TIFFs to multi page or individual page PDFs on MAC

I have hundreds of Multi page TIFFs that I need to turn into individual image JPG files (file names not important). Some had already been converted into multi page PDFs and I found a solution using ...
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4answers
1k views

Is it possible to convert JPEG to a lossless format and convert it back without losing quality?

Say I have a lossless version of an Image that is previously compressed in JPEG format (like if you open a JPEG image in mspaint and save it as BMP, I know that some metadata would be lost in this ...
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2answers
2k views

how to put an image in an HTML signature for Thunderbird?

How do I get thunderbird to send HTML and an image in a signature? Just wanting to send a red dot in the signature file for as an example. see also: https://stackoverflow.com/q/44481019/262852
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I have a corrupted SD card in which the jpgs have been screwed up [duplicate]

The pics were taken with a Nikon D5200 on to a 4gig micro sd card. I can see parts of the pics but images are corrupt and the thumb nails up to the large ones seem ok. I would be happy to get the ...
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1answer
756 views

Is TIFF with JPEG compression lossy?

Preview on the Mac can save a file to TIFF, but with JPEG compression: Is this lossy? I'm confused because TIFF is usually lossless, but JPEG is lossy. Maybe it is lossy, since the file size is 4MB ...
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2answers
5k views

EXCEL HYPERLINK: Link JPG in folder via hyperlink

I am trying to figure out if I can link a .jpg file with an Excel via hyperlink (or in another way). Let me explain a bit more what I an trying to do: Using Excel 2013: I have a folder with +1000 ...
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2answers
119 views

I need to stitch 1024 JPEG files together [closed]

I have 1024 256x256 JPEG files called Column_Row.jpg (replace words with coordinates on 32x32 grid). I need to stitch them into one big image. What is the best software I could use to do that?
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2answers
9k views

Whatsapp web does not accept jpg file in portrait orientation

Using Whatsapp web on my PC, drag & drop jpg files to send them via Whatsapp. If the file is in portrait orientation, I get a message: ".file you tried adding is not supported 1". If I rotate the ...
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0answers
353 views

Find out information about creator of a file(mp4,jpeg)

I recently got an email(spam) attachment with several images(jpeg) and one video (mp4). For curiosity I want to find out who really made these things and potentially find out whom actually sent the ...
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0answers
2k views

How to disable WebP images in Chrome?

Google Chrome sometimes takes a .jpg image and converts it to a .webp file. The problem is that when I save this image to file, I cannot open the file. I have tried manually changing the extension of ...
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1answer
61 views

How can I place images from Excel into Microsoft Word?

I have 10 links to images in an Excel file, and I have 10 pages in a Microsoft Word document. I'd like the Microsoft Word document to import each image from the .xls file and place it in a designated ...
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1answer
343 views

ffmpeg, making gif or video, how to make the “PLAY” faster, fps=1 dont work

i have this problem, i download a gif, i extract all the jpgs from it, i modified the jpg, then i was trying to recreate the gif using the new jpgs, but i found that whatever i try, no matter if is a ...
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2answers
955 views

Encrypting Data into a JPG file and uploading it to cloud photo hosting services

Is there a tool or how would one encrypt data into a jpg file and be able to upload to photo hosting service? Has anyone done this with RAW image files as those can be much bigger and can hold more ...
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0answers
503 views

Webcam recording with JPEG CUDA codec in FFmpeg

Put simply, I have to capture a DirectShow webcam raw video as single JPEG images. I want to use NVIDIA GPU power for that. As far as I know from the FFmpeg hardware acceleration and from NVIDIAs ...
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0answers
93 views

PDF to JPG - part of image not showing up

I have a pdf that I want to print as a 20x30 poster print at Walgreens Photo/Costco Photo/something similar. These places seems to only take jpg, bmp, tiff, or png format. I used a free online ...
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1answer
108 views

Finding geolocation from image

I use the app Open Camera on my Android phone. I have enabled "Store location data (Geotagging) / store GPS location data in photos". I have transfered some photos to my computer and would like to ...
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1answer
2k views

Changing the DPI in a JPEG without re-encoding? with ImageMagick or something else

Sometimes I have image files which I want to contain a certain DPI setting. Note that I mean just the DPI value, i.e. just the value in the image's metadata. I don't want to resize the actual image. ...
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1answer
45 views

How to parallelize this image processing script?

I have this script that converts .CR2 images from my Canon camers to Jpegs. The images are named IMG_{NNNN}.CR2 where {NNNN} are the image sequence numbers from the camera. I'd like to parallelize it ...
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1answer
62 views

How do I create a video, using one background jpg and other smaller changing jpg's in the foreground?

I hope someone can help me, as I've never done this before. Basically what I want to do is create a video using a 2 hour long dj mix (mp3 file), a compilation. I would like the album cover as the ...
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1answer
246 views

How to convert “SWOP (Coated), 20%)” CMYK TIFF to sRGB PNG and ditto CMYK JPG to sRGB JPG?

I have a TIFF image and a JPG image. http://regex.info/exif.cgi says that they both use a CMYK color space labelled as "SWOP (Coated), 20%". How do I accurately and losslessly convert the TIFF image ...
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2answers
695 views

how can I convert SWF to JPG?

I have some flash files and they are "still" which doesn't contain any animation in it. how can I convert flash files to image without losing quality?
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1answer
26 views

Store caption into image [closed]

I am a newbie about the JPEG format, just knowing that it contains some metadata. 1) Is it possible to save, in a metadata field of the JPEG format, a caption for the image with an appropriate length?...
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4answers
869 views

Strange bytes added to end of JPG files on SD card

A month ago, my wife upgraded from a Galaxy S5 to S7, and brought along a MicroSD card full of photos taken on the old phone. Recently, in the process of backing up new photos, I noticed that a lot ...