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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Decode WebP with FFmpeg

I would like to convert this file: https://gstatic.com/webp/gallery/1.sm.webp To PNG or JPG with FFmpeg. I tried this: ffmpeg -i 1.sm.webp a.png but and error was produced: ffmpeg version git-...
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Identify corrupt photos in Photos.app

What is the best approach to identify all corrupt JPGs managed with Photos.app (formerly known as iPhoto) for macOS? Basically, this is the same question as posed previously, but specifically for ...
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Why does Google Chrome save a JPG image to WEBP instead?

I'm trying to save what appears to be a JPG image from Chrome and always end up downloading a WEBP image instead. I'm on Chrome Version 80.0.3987.163 on macOS Catalina (10.15.4) and I'm trying to ...
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firefox color management preferences

the documentation of the Firefox gfx.color_management.mode preference refers to "tagged graphics" and "rendered graphics". These terms are also found in many Mozilla development discussions, and also ...
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How to apply jpeg image rotation not with Exif header mention of this rotation, but with recomputing the data on Windows 10? [duplicate]

Is this option available somewhere? I have a lot of scanned data that has reorientation from landscape to portrait in Exif files, but not in jpeg data itself. And I can't use some file uploaders like ...
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Failing to convert JPG to PDF with GhostScript

I'm trying to apply a recipe shared in other posts, but it fails for a reason I can't understand: c:\tmp>gswin64c -sDEVICE=pdfwrite -o output.pdf "c:\Program Files\gs\gs9.50\lib\viewjpeg.ps" -c "(...
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How to find the size of the compressed image?

So, if I have an image in BMP file format being 1024 x 768 and 8 bits (bit depth), I can get the size of the image: 1024 x 768 x 8 = 6,291,456; 6,291,456 / 8 x 1024 = 768 Kb, which is correct when I ...
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How can I open or convert JTIP (jpeg tiled image pyramid) files?

I've found some old photos (.jpg) from 2005 on a harddrive and can't find a way to view them. Using droid, I found out that these seem to be JTIP (jpeg tiled image pyramid)-files. The puid of this ...
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How can I convert a HEIC file to a JPEG file, in Debian?

This question appears to address this https://askubuntu.com/questions/958355/any-app-on-ubuntu-to-open-and-or-convert-heif-pictures-heic-high-efficiency-i However, on Debian, adding the required ...
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Repair corrupted JPEGs by writing magic numbers

I recently used both Photorec and Recuva to recover data from an accidentally-formatted 2TB disk, and as a result have a lot of corrupted JPEGs along with those that were successfully recovered. I'...
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ImageMagick failing to match images lower than given dimensions

This is a follow-up question to this one. So far, I've cobbled together the following find command, which is intended to print (and once properly tested, -delete) all JPGs that are 200 x 200px or ...
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Text highlight in image

I have articles of newspaper in png format, want to highlight these images similar to pdf text, is there any possible tool or method to do it? I have syncronized this images in my desktop to cloud ...
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Colour change occurs when exporting png/jpeg compared to h.264 in after effects

when I'm exporting an animation in after effects the colour seems far darker than when I'm exporting a still frame. Using PNG/JPEG for frame and H.264 for the animation. Any way I can make them come ...
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How to Paste a picture as JPG instead of PNG

The keyword to my question i "paste", not "save". My company uses a tool that will evaluate the Word documents we made, and one of the criteria is all the images must be in JPG. Regardless of what ...
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Recovering a JPEG image with broken sections

Some files were corrupted while being recovered from a disk drive, including portions of videos and images. They all seem to share the trait of having sections of data replaced with repeating bytes (...
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What's the difference between jpg and JPG on mac?

Why does the picture on top have 'jpg' capitalized, when they are all JPEG images? Is it because the file size is larger?
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How to use dcmcjpeg to convert DICOM to JPEG?

The dcmcjpeg tool from the dcmtk package (sudo apt-get install dcmtk) is supposed to convert DICOM image files to JPEG. But I suspect it still wraps the image in a DICOM container, because when I try,...
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What software is used here to compress jpeg?

https://compressjpeg.com/ The copression level is pretty inpressive, and I would like to use that encoder (or something similar) offline.
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Jpegoptim on Xubuntu 16.04.6

I'm using jpegoptim to optimize jpg images, it works flawless, but I have one question about optimize multiples jpg images using a short script: n=1 for i in *.JPG; do jpegoptim --max=25 "$i" $...
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CIFS mounted on Linux from Windows shows corrupt/distorted images

I have mounted a Windows (NAS) folder onto a Turnkey-Linux server using cifs-utils. When viewing some of the images on the Linux side they will visually show distortion/corruption but will be fine on ...
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how to send an image in the body of the mail using any of the mail utilities in Linux

How can we send an image in the body of a mail with rich text / HTML. I tried to get from few of the links , but i am not able to get complete solution. I tried below code but no luck mpack -s "...
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Convert multiple .jpg files to .bmp files

I am currently making a game with iGraphics, and for that I have to use images only in .bmp format. I have multiple .jpg images, and I want to convert all of them to .bmp format. Just changing the ...
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ffmpet RAW .tif to jpeg to dark

I know, this problem is known, but I cannot actually find a solution for this. I am using Topaz JPEG to RAW. The output, I selected, is .tif. So a 4:3 4k image is a proud 80MB large. Now I need to ...
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Samsung S7 photos that were compressed by Windows are now are over 40GB each and I can’t open them

Archived file found here. This is a random picture that is 2MB when compressed but 45GB when decompressed I stored the files from the phone on a Windows 10 laptop that had little memory left and ...
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resize many different images with different sizes

I have a large selection of jpeg that are all different shapes/sizes (450 x 60 pixels, 800 X 200 pixels etc). I am trying to batch resize them (there are many) using automate/batch on Photoshop (I ...
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338 views

How to compress multiple .jpg files simultaneously, using “Send to”?

If I have say 20 photographs saved as .jpgs, each of size 3MB, and I need to send them as attachments to an email, it can be useful to compress them each to say no more than a few hundred kB before ...
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How to convert multiple images at once from JPEG to PNG?

How can I convert multiple images at once from JPEG to PNG? The JPEG to PNG converter on my MacBook does not convert many images quickly at once. My option is now: Convert JPG to PNG - JPG4PNG
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Higher quality of JPEG frames extracted with FFMPEG from MP4 video

I got a 4k mp4 video file and my goal is to extract the individual frames. Unfortunately, the video is quite big ~10GB and storing all the frames lossless (e.g. using png, results in 12MB per frame) ...
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Get a location of application in open with list of Windows 10

Today after system restore I found a suspicious application with name %1 in open with a list of application that can open JPG images. So, I want to know where this application installed on my hard-...
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Can I pad the size of an image without changing the dimensions or content?

I am using an internal tool at my workplace that has a minimum image file size. Unfortunately, I have a use case where I need to upload and interact with image files that come in below this limit. ...
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How to create an image with plain text?

You open a new .txt file, you write the instructions there for an image and when you save it as .png it should present you an image. How the image looks is not important. I'm just curious if I could ...
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Is it possible to optimise and resize an image with mozjpeg?

I want to be able to compress and resize and image with mozjpeg's cjpeg command However according to the usage file it does not seem like cjpeg can do both in one single command. Is it right? If ...
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Why doesn't my bmp save with transparent background? [duplicate]

I have the following .bmp file called mapa.bmp As you can see, from the embedded picture, my background is fully transparent. I made sure to check and my Image->Mode is set to RGB as well. and I ...
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Mediainfo recognising jpg files as video. Glitch or jpg fie issue?

So i've just scanned a bunch of photos and the resulting files are just standard JPG but for some reason MediaInfo is picking them up as Video? For instance i have a 1.86mb jpg file (according to ...
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NTFS compressed photo occupies 3M times more space than on disk

I've got some photos copied from a smartphone. Each file's properties says that it's size is 12 GB while it only occupies 4kB on the drive. The result is that 83 files occupy 1TB of 256GB HDD :). I'...
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I want to convert jpg image sequence in folder to mov by adding windows context menu for a folder

I am using ffmpeg code to convert the available jpg sequence to mov(Photojpg) ffmpeg -f image2 -r 24 -start_number 1001 -i /ip/Seq/image.%04d.jpg -y -xerror -vcodec copy -r 24 /ip/Seq/movie.mov But ...
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Which cwebp parameters to specify to avoid loosing quality when converting pictures from JPEG? [closed]

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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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
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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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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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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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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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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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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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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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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
3k 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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547 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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