All Questions
27 questions
1
vote
1
answer
299
views
Revisiting how to repair broken JPEG images?
This has come up a number of times. This post here shows a way to extract the thumbnails:
How to repair corrupted JPEG files that still have their thumbnails (AskUbuntu)
That's a low-res solution, ...
- 13
0
votes
1
answer
449
views
ffmpeg split JPEG-encoded MOV video into frames without reencoding
I have a MOV video file from an old digital camera where the video stream is just a series of JPEGs. I'm trying to extract those JPEGs without reencoding them (or at least come as close to the ...
- 165
1
vote
0
answers
220
views
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 &...
- 11
1
vote
1
answer
3k
views
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 ...
- 837
3
votes
2
answers
8k
views
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,...
- 361
0
votes
0
answers
480
views
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 "...
- 119
1
vote
1
answer
2k
views
How do I convert a JPEG file into a black and white (1-bit) monochrome TIFF in Ubuntu?
JPEG is a scan of a text document so not much to loose in terms of colour/tones.
convert foo.jpg -flatten -monochrome bar.tif
gives
convert: BitsPerSample 1 not allowed for JPEG. 'JPEGSetupEncode' ...
- 111
2
votes
2
answers
1k
views
Photos do not save after I rotate them in Ristretto
The photos I am trying to rotate are JPEGs. I open them in Ristretto and press Ctrl+[ or Ctrl+]. Even if I press "save copy", the rotated image doesn't get saved to disk! Why?
All files have 777 ...
- 425
0
votes
1
answer
1k
views
guess the secret text inside a jpg file using outguess in linux
How can I get the secret content of a jpg file using outguess command without knowing the passphrase ? Before all is it possible to do so, guessing the content using outguess in linux without knowing ...
1
vote
1
answer
2k
views
How to remove string from JPEG files using find?
I have many files in many media catalogs with some string and I want to remove this string.
The string is contained inside JPEG files and looks like:
eval(base64_decode('...
- 113
2
votes
2
answers
161
views
Is there a programmatic Linux/Unix/Mac way to obtain the dimensions of a JPEG?
Inner Sanctum ~/mirror/images $ file wardrobe_square_90.gif
wardrobe_square_90.gif: GIF image data, version 89a, 90 x 90
Inner Sanctum ~/mirror/images $ file wardrobe_square_90.jpg
wardrobe_square_90....
- 963
15
votes
6
answers
32k
views
How to repair broken JPEG files?
I have some JPEG files which have some colours wrong after a certain point and also every pixel is shifted to the left. I think this is because of some missing bytes at the point where it changes.
I ...
- 343
5
votes
1
answer
2k
views
How to find all jpeg images of the same camera model
Recently during a installation messup , I lost all my files from my windows NTFS drives. I installed on testdata on Ubuntu 12.10 Desktop edition and with the help of photorec could recover a lot of ...
- 53
5
votes
1
answer
14k
views
FFMpeg convert jpeg images to video
I'm attempting to take a set of images taken at 1-second intervals to form a timelapse video. I figured this would be easy with ffmpeg, but i'm running into cryptic errors.
All the images are yuv420 ...
- 284
8
votes
1
answer
2k
views
How do I achieve lossless JPEG joining without truncation of partial MCUs?
I am working on a project for which I need to join thousands of JPEG images losslessly (I'm not talking about the Lossless JPEG/JPEG 2000/JPEG-LS formats here).
Aforementioned images have varying ...
- 57k
24
votes
3
answers
28k
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? ...
- 832
3
votes
1
answer
7k
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 ...
- 1,705
30
votes
4
answers
47k
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?
- 3,094
3
votes
1
answer
2k
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?
- 251
4
votes
2
answers
6k
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 ...
- 41
0
votes
2
answers
412
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 ...
- 1,169
0
votes
1
answer
1k
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
1
answer
299
views
Encoding multi-jpegs with mencoder, skipping broken files
I've multiple jpegs uploaded form IP cam via FTP, I use mencoder to periodically pack them into single avi file, problem is that sometimes one or two jpegs submitted by cam are broken, and this make ...
- 205
10
votes
3
answers
65k
views
Which is the best utility for opening .jpeg, .png and .tiff files on Linux? [closed]
Which is the most commonly used utility?
- 18.2k
0
votes
5
answers
11k
views
Does linux support images in .jpeg format?
Does linux support images in .jpeg format? What is the difference if I save my image in .jpeg or .JPEG or .jpg from a linux point of view? Is this case sensitive?
amanda
250
votes
13
answers
339k
views
Batch converting PNG to JPG in linux
Does anyone know a good way to batch-convert a bunch of PNGs into JPGs in linux? (I'm using Ubuntu).
A png2jpg binary that I could just drop into a shell script would be ideal.
- 3,332
49
votes
6
answers
59k
views
Convert a bunch of BMP files to JPEG on Linux
Someone sent me a bunch of BMP files and I need them in JPEG. I could convert them one by one using GIMP, but I'd rather do it all in one go. I have Ubuntu.
- 3,922