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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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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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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Lossless or near lossless compression options for PDFs containing grayscale with JPEG2000?
I have some older books (pre 1900) that I'm working on archiving to a digital format. Most of the time using greyscale is satisfactory in terms of color preservation, however I'm having trouble with ...
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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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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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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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Batch populate JPEG IPTC keyword from csv or txt file
I have 50,000-plus JPG files which I've tagged for easy lookup by user-selected keywords. The database which matches image files with their keywords is proprietary and utility-specific. I want to ...
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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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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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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 ...
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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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Is it possible to determine which Windows program last modified a jpeg?
I keep finding jpeg images on my computers, which are corrupt. Some have a gray band at the bottom, some are reported bad by Bad Peggy (but look normal when viewed in e.g. XNView) and some are just ...
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In Windows 10, what is changing the filename extension of JPG files to JFIF?
In Windows 10, the value of Computer\HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg/Extension is changing from JPG to JFIF at frequent intervals
This value is changed roughly every 2 to 3 ...
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How to sort thumbnails from a collection other low size photos?
I have a collection of low sized photos (low file size, say around 50KB), consisting of thumbnail images of my camera photos, whatsapp forwarded images and other images downloaded from internet. The ...
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FFMpeg - JPG/PNG images render in incorrect orientation in MP4 output file and can't be combined in same MP4 video
I am a new user to FFMpeg.
I want a command-line that will create a basic slideshow MP4 video from a folder of JPG and/or PNG images. The images are sourced from either digital cameras/smartphones or ...
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How to make video from high resolution jpg?
I try to make video from 2 jpeg (6912x3456 px, files is large it is 360 panoramas) with ffmpeg by
ffmpeg -r 1/4 -pattern_type glob -i "my_dir/*.jpg" -c:v libx264 -profile:v high -crf 18 -vf &...
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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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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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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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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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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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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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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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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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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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Unable to open invalid jpg file
A few days ago I took pictures from my camera and uploaded them to my computer.
Now the photos that I took few days ago was appear to be corrupted or invalid format.
I have tried use third party ...
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Corrupt CR2\JPEG file - correct size but all zeros in Hex editor
I have an SD card with some RAW images (.CR2) and JPEG's that show the correct size but won't open (invalid image). Hex editor shows all zeros in these files.
Before you answer the obvious "All zeros ...
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Software to link up photos in a line to form one image
I have several (around 50) photos of multiple sections along a river, each with a metre stick in the photo for scale. I need a way to link these photos up in a single image, whilst being able to crop ...
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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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Convert list of JPEGs to repeating animated gif using ImageMagick
I am using the convert command in ImageMagick to convert a list of JPEGs to one single animated GIF. The problem comes when the first frame keeps on repeating after every second within the gif which ...
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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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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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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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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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How to convert heic format to jpeg format
The ffmpeg master branch already supports the heic format. How do I pass parameters using the ffmpeg command to convert heic images to jpeg images of other resolutions?
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Is there a program that can select the smallest files by size during a file conflict in windows 10
So I'm resizing some VTFs by converting them back into PNGs then sizing them down to 512x512 as maximum anything smaller stays what it is. that said I have 2 folders 1.oldmats 2.newmats. now while ...
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GIMP advice on JPG to PDF conversion
When I convert JPG files to PDF using GIMP the result is usually a much bigger file.
The first step upon importing is the dialog for a conversion that is titled "convert to RGB working space"...
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gimp exports are about 50% bigger, how should I economize on space?
Suppose I'm satisfied with the quality of a JPEG photo but I just want to crop the edges without ending up with a bigger file. I use gimp to do the cropping. The JPEG photos are always photos of text ...
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Preserve quality parameters when saving jpgs in photoshop
I have a bunch images, all saved using JPEG, quality: 90, subsampling ON (2x2).
When saving as .jpg in photoshop Save As dialog offers no 0-100 quality option, nor a subsampling checkbox/setting.
Is ...
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I don't know how to play this videos
This videos are from an IP camera but I don't know how or where I can play it. I tried with VLC using a demuxer for h.264 but it doesn't work.
I tried converting the videos to mp4 but it looks like ...
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Can apng or any other image filetype be animated over many years?
I am wondering if there is a suitable image type that can be animated or a layer can be animated to vanish over a long period of time... like years?
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Opening JPG/TIFF in Preview, Can't Save from Preview
User is trying to open any image file- tiff, jpg etc in the default macOS Preview app and then save/export it to a jpg- usually to the desktop or documents and cannot. See below.
System 1 Specs:
macOS ...
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How to convert old PEF pentax raw format to jpg or mp4?
I have some old pentax .PEF files and I want to convert it updated jpg or mp4 formats. How do I go about this?
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Context menu entry for .jpg files not showing anymore
My custom made context menu entry for .jpg files does not show up anymore in Windows 10.
I did the steps correctly by going into the HKEY_CLASSES_ROOT\jpegfile\shell key, adding a new key there, give ...
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Convert all Images of a Type to Another Throughout the Computer Simultanously
I just realized my computer has been saving jpeg files as jfif for some weird reason and I have no idea since when. Is it possible to change the extension of all jfif files to jpg again throughout the ...
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Can I convert my octet-stream / text file to a jpeg?
I got a file with MIME type application/octet-stream, off the browser cache. I have a strong feeling it's a jpeg file that I want to open.
First few files of the file:
ÿØÿà �JFIF������ÿÛ�„�
&...
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How to configure Firefox to open JPG files in an external application
I often need to open JPG files from a website that are not rotated properly. I am using Firefox on Windows 10.
When I click on their link in Firefox, they open in a new tab and I have to rotate my ...
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.jif images do not show thumbnail on Windows
Any JPG, GIF, PNG, etc, will display a Thumbnail on Windows File Explorer.
However, JIF images don't:
If I rename ".jif" to ".jpg", it displays the thumbnail:
Is there any way to ...
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Trying to convert jpgs to video but getting only the first frame
Update:
Thanks to everyone who weighed in with help, I did finally get it to work. My best understanding is that it was an issue with threading from the original script and the video creation command ...
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On Widows, how can I screen capture, then paste as JPG (not PNG) into gmail?
How can I capture part of a screen on Windows 10, then paste as a JPG?
Using the inbuilt snipping tool and third party tools, the resulting pasted image ends up as a PNG in Gmail.
PNG files are ...
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