Which is the fastest decoder for jpeg full-scale decoding ? I want to accelerate my apps' jpeg decoding speed, how can I do this? I am using libjpeg now, it is a bit slow, is there any one faster than libjpeg? I do not need partical decoding. Many thanks! ...
I currently have a jpeg file which I converted to an flv using the following command: ffmpeg -r 10 -b 180000 -i test.jpg test.mp4 Now, I want to increase the duration of this .mp4 clip, so the picture stays on the screen for more than a split second. Eventually, I hope to merge a stream of these files to create a slide show out of jpe...
Are there any gems / libraries which can be used with Ruby to convert a JPEG into a SWF file with a specific duration? I need to take a list of JPEGs and convert them into a SWF slideshow. ...
In Flash, via the authoring environment, you can put bitmaps in your movie that are compressed with JPEG but still support full alpha transparency, something JPEG does not support out-of-the-box. Is there a way to achieve the same when embedding bitmaps via the Flex [Embed] tag? ...
I currently have it working so it displays a dialogue box to save the image on your computer: if (isset($GLOBALS["HTTP_RAW_POST_DATA"])) { // get bytearray $jpg = $GLOBALS["HTTP_RAW_POST_DATA"]; // add headers for download dialog-box header('Content-Type: image/jpeg'); header("Content-Disposition: attachment; filename=".$_GET['name'])...
I need to convert bitonal (black and white) TIFF files into another format for display by a web browser, currently we're using JPGs, but the format isn't crucial. From reading around .NET doesn't seem to easily support writing bitonal images, so we're ending up with ~1MB files instead of ~100K ones. I'm considering using ImageMagick to d...
Hi, I want to send video from the phone (Nexus one) to other devices on the network. I know Android supports video encoders/decoders. But for now the other devices can only accept Base64 encoded JPEG images. Has anyone done something like this or can provide pointers to if and how it can be done ? Thanks. ...
Hi, How can I convert from NV21 to JPEG. Currently, NV21 is the only previewFormat that is supported by the camera on a Nexus One (running Android 2.2). Thanks. ...
A JPEG image, if it is non-progrssive loads from top-to-bottom, and not from left-to-right or any other manner. Doesn't that imply that jpeg uses some row-wise compression technique? Does it (use a row-wise compression technique)? ...
I have a BufferedImage I'm trying to write to a jpeg file, but my Java program throws an exception. I'm able to successfully save the same buffer to a gif and png. I've tried looking around on Google for solutions, but to no avail. Code: File outputfile = new File("tiles/" + row + ":" + col + ".jpg"); try { ImageIO.write(m...
Last time I saw someone asks why Safari on iPad doesn't show some 1920x1440 jpeg with real size & I solved that puzzle. You have to use a progressive-encoded jpeg. However, I find another different problem. Say, demo.jpg is a progressive-encoded jpeg with 2000x3000 & I upload it to my website. I then access it via url ...demo.jpg, Safar...
Is there a table that gives the compression ratio of a jpeg image at a given quality? Something like the table given on the wiki page, except for more values. A formula could also do the trick. Bonus: Are the [compression ratio] values on the wiki page roughly true for all images? Does the ratio depend on what the image is and the siz...
Any PHP functions that deal with JPEGs don't seem to be working on my server. This code: <?php $im = imagecreatetruecolor(120, 20); $text_color = imagecolorallocate($im, 233, 14, 91); imagestring($im, 1, 5, 5, 'A Simple Text String', $text_color); header('Content-type: image/jpeg'); imagejpeg($im); imagedestroy($im); ?> creates an e...
Hello, this is a strange case, I have a jquery script that works with load() and a PHP script with a gif loader until this script is retrieved FADING IN, this jquery is launched on click The problem is that the jquery script is kinda useless for its real intent because this php script I call returns something like <img src="resizer.php...
Hello everyone, When trying to print any webpage with Safari 5 for Windows, JPEG images don't get printed. The only thing I could find about this issue is here but it doesn't help. Anybody having the same problem ? ...
Hello , this is my code : TImage.Picture.LoadFromFile('File.jpg'); but i got JPEG error #53 ! what is the reason for this error? ...
Hi! I need to join several jpg files into video using FFmpeg library. But I have a problem with reading this files. Here is a function which reads image file and makes AVFrame: AVFrame* OpenImage(const char* imageFileName) { AVFormatContext *pFormatCtx; if(av_open_input_file(&pFormatCtx, imageFileName, NULL, 0, NULL)!=0) {...
Hello, I own web photo print service, main problem is that pictures users upload are twice in size (megabytes) than those I need to print them in standard photo size. Bandwidth and disk space is not a problem, what IS a problem is time it takes to upload them (for user). If photo from camera is 2-3MB I wish to resize them somehow in ha...
procedure TmainForm.FormCreate(Sender: TObject); var img : TImage; pic:TPicture; begin pic := TPicture.create(); pic.LoadFromFile('my_picture.jpg'); img := Timage.create(Self); img.Picture := pic; end; ... "Project MyProect.exe raised exception class EInvalidGraphic with message 'Unknown picture extension (.jpg)'"...
Photoshop has a very good jpeg compression algorithm, using which it creates smaller files with same visual quality (compared to for example ImageMagick). Is there some utility, which can produce same or better quality to size ratio? ...