jpeg

Is there any Container for playing MJPEG and MP3 as video?

So I have MP3 track and MJPEG Is there any container for combining those 2 and playing them as one video track in one container? ...

How to convert Java Image into JPEG array of bytes?

Is there a way to convert a Java Image, encode it into JPEG (but not saving it to a file), and store it as an array of bytes? (byte[]) I need the JPEG-encoded image as an array of bytes. ...

FFMPEG: How to convert 1000 jpegs and 100 mp3 seconds into video?

So my programm generates JPegs and MP3 stereo track. I want to convert my programm results with FFMPEG to h264+aac or OGG (vorbis+theora) 100 seconds video. So how to do It from commandline at least (or using pure ffmpeg lib from C)? ...

C#: Take Out Image Portion of JPEG to Backup Metadata?

This will be a little backwards from the typical approach. I've used ExifTool for metadata manipulation before, but I really want to keep the best metadata backup I can before I make anything permanent. What I want to do is remove the compressed image portion of a JPEG file to leave everything else intact. That's backing up EXIF, Maker...

How can I tell groovy/grails not to try to "re-encode" binary data? (Revised title)

I have a groovy/grails application that needs to serve images It works fine on my dev box, the image is returned properly. Here's the start of the returned JPEG, as seen by od -cx 0000000 377 330 377 340 \0 020 J F I F \0 001 001 001 001 , d8ff e0ff 1000 464a 4649 0100 0101 2c01 but on t...

Python Post Upload JPEG to Server?

It seems like this answer has been provided a bunch of times but in all of it, I'm still getting errors from the server and I'm sure it has to do with my code. I've tried HTTP, and HTTPConnection from httplib and both create quite different terminal outputs in terms of formatting/encoding so I'm not sure where the problem lies. Does an...

jpeg image taking long time to load in blackberry

I have developed an application in blackberry in which I provided a functionality to load image..but when image is set it does not appear on the screen till the light of the phone is on and later once light goes off and light is made on image appears. I want to know why image takes long time to load or there could be a problem with imag...

how to tell if a photo was taken in landscape or portrait? JPEG .NET metadata orientation

Thru VB.net/C# is there any way to read any metadata of off a JPEG to tell if the photo was taken in landscape or portrait? I would assume a camera would need an accelerometer first of all to even tell what direction is up...correct? Assuming there is that kind of intelligence to detect the angle of tilt, how would I go about reading th...

How can I access the JPEG image pixels as a 3D array like we do in MATLAB?

I want to process an image in C++. How can I access the 3D array representing the JPEG image as is done in MATLAB? ...

JPEG image with alpha channel on website

I would like to make a JPEG image file with some pixels that are partially transparent or fully transparent, similar to a PNG file with an alpha channel. Is this possible? If so, how would I go about doing this? I would like to use the image on a website. If I try to do this, would it work in any or all of the popular browsers (IE 7+, F...

How to remove EXIF data without recompressing the JPEG?

I want to remove the EXIF information (including thumbnail, metadata, camera info... everything!) from JPEG files, but I don't want to recompress it, as recompressing the JPEG will degrade the quality, as well as usually increasing the file size. I'm looking for a Unix/Linux solution, even better if using the command-line. If possible, ...

Fast Remote PHP Technique To Detect Image 404

What PHP script technique runs the fastest in detecting if a remote image does not exist before I include the image? I mean, I don't want to download all the bytes of the remote image -- just enough to detect if it exists. And while on the subject but with just a slight deviation, I'd like to download just enough bytes to determine a JP...

How to update EXIF tags of a picture file in Ruby ?

Title says everything. ...

C++ Zig-Zag Scan with libjpeg

Hi, right now i am implementing a Zig-Zag scan in C++. In addition to that i use the libJpeg8a. I want to intervene into the process when encoding images. My questions is: How can i connect to the scanning process out of C++??? Or: And where exactly is the zig zag scan located within the libJpeg??? ...

Does Exif metadata always get stored just after the JFIF header?

In JPEG files, Does the exif metadata always gets stored as the first marker? Or it can be in between other markers? The following has a comment that "After the APP1 Marker area, the other JPEG Markers follows." http://www.media.mit.edu/pia/Research/deepview/exif.html Is it confirmed? Thanks ...

Am I correctly extracting JPEG binary data from this mysqldump?

I have a very old .sql backup of a vbulletin site that I ran around 8 years ago. I am trying to see the file attachments that are stored in the DB. The script below extracts them all and is verified to be JPEG by hex dumping and checking the SOI (start of image) and EOI (end of image) bytes (FFD8 and FFD9, respectively) according to the ...

Compressing three individual jpeg pics containing temporal redundancy?

I am interfacing an embedded device with a camera module that returns a single jpeg compressed frame each time I trigger it. I would like to take three successive shots (approx 1 frame per 1/4 second) and further compress the images into a single file. The assumption here is that there is a lot of temporal redundancy, therefore lots of ...

Jpeg calculating max size

I have to say the I don't know much about how file formats work. My question is say I have a jpeg file that is 200 px by 200 px, how can one calculate what the maximum size that file could be in terms of megabytes/bytes? I think that the reasoning that led to the question will help some one answer me. I have a Java Applet the uploads I...

converting webpage into jpeg image using java

I am building a web application, in Java, where i want the whole screenshot of the webpage, if i give the URL of the webpage as input. The basic idea i have is to capture the display buffer of the rendering component..I have no idea of how to do it.. plz help.. ...

C# library for handling pictures

Does any free C# (.net) library exist for handling properties of pictures. Main targeting functions is to read Camera Information from as it does "Google Picasa" picture viewer, I also want to try find identical pictures. ...