• ImageMagick Converted PDF to JPEG some files have a black background solution


    Use these flags: convert -alpha flatten -alpha remove "output.pdf" ljll.jpg And even the pesky black backgrounds should be gone after converting to jpg........
  • ffmpeg Linux Mint download, compile and install howto


    #if you have nvidia make sure you install the nvidia-cuda-toolkit so hardware acceleration can be used wget http://ffmpeg.org/releases/ffmpeg-3.3.2.tar.bz2 tar -jxvf ffmpeg-3.3.2.tar.bz2 cd ffmpeg-3.3.2/ ./configure --disable-yasm install prefix /usr/local source path ........
  • dir2slideshow Centos rpm requirements


    yum -y install dvdauthor ffmpeg mjpegtools sox bc rpm -ivh dvd-slideshow-0.8.4-2.noarch.rpm Preparing... ########################################### [100%] 1:dvd-slideshow ########################################### [100%] /usr/bin/dir2slideshow: line 553: bc: command not f........
  • Linux bash read exif data tags from image jpeg/tiff/jpg


    Use the program exiftags exiftags 20141031_155127.jpg-45460829d582e9.jpg exiftags: couldn't find Exif data........
  • PHP Warning: imagecreatefromjpeg(): gd-jpeg, libjpeg: recoverable error: Premature end of JPEG file


    I was having an issue with only certain random/jpeg files with the functions imagecreatefromjpeg imagecreatetruecolor and other related ones. This issue was annoying basically it seems like a libgd issue/bug with newer versions of PHP and it was difficult to trace-out. One very useful thing that helped me was using "php-cgi" and passing the query string as an argument eg: php-cgi images.php source=IMG.jpg (that way you get all the error messages wh........
  • Ubuntu 10 Nvidia Drivers Not Updated After Kernel Update Solution/How-To Manually Rebuild nvidia kernel modules for Ubuntu


    I dread updating the kernel and rebooting to find the Ubuntu graphics aren't working and you have to manually intervene. This is usually because Ubuntu for whatever reason didn't update the drivers you need (eg. the manually compiled Nvidia Kernel driver that MUST be recompiled for each and every kernel update unfortunately). The most common reason may be that "linux-source" hasn't been installed automatically on my system. I tried to manually reinstall the........
  • Convert PDF to JPG/JPEG without low resolution/small picture size


    convert -density 400 somepdf.pdf -scale 2000x1000 output.jpg The key is the "-density 400" switch and also -scale 2000x1000 To give credit I found the solution here: http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=10928 That was the perfect solution when I was frustrated with how small the resulting JPG's resulted. I'm sure this will help a lot of people when it comes time to converting a PDF to JPG which I'm amazed Imag........
  • Convert doc images/jpg/jpeg to PDF


    Use "ImageMagick" which can be installed easily on most UNIX/Linux distros. Remember that it will go with the standard file listing to determine the order but I believe you can manually specify multiple jpg's in the arguments. Convert image/jpg to PDF convert *.jpg yourpdf.pdf This is a very handy and free tool. Convert DOC/TXT documents to PDF If you wanted to convert a .doc file or text........
  • Compile PHP 5.3.2 on Centos 5 and CPanel/WHM because of error - Fatal error: Call to > undefined function imagecreatefromjpeg()


    This function and others may not work with the stock PHPinstall on Centos/CPanel: Fatal error: Call to > undefined function imagecreatefromjpeg() Even with libjpeg-devel installed it won't work because PHP was not compiled with jpeg support, so we have to do the dirty work ourselves :) Here is the command/yum's I did to install missing libraries for PHP that configure will complain about (yes it is a one by one process). yum install bzip2-........
  • PDF File Conversion/Solution Using Imagemagick to create PDF files for free, quickly and efficiently


    I'm really starting to love ImageMagick, I've used it to mass convert/resize family photos with scripts and all kinds of handy things. Today I just learned that you can create PDF files with it too, say if you have images scanned or anything else it's very simple: convert *.jpeg output.pdf You can replace jpg with whatever format your files are in. One thing to remember is that you can specify the order that the images/pages are added to the PDF manu........
  • PHP cannot access /usr/bin/openssl


    PHP cannot access /usr/bin/opensslI have verified the username that runs the process is able to access /usr/bin/openssl and it does exist but the PHP script is saying it doesn't exist: [code:1:1fd0f3abbe] if (!file_exists($OPENSSL)) { //echo "ERROR: OPENSSL $OPENSSL not foundn"; }[/code:1:1fd0f3abbe] I don't get itI can clearly see the contents of /usr/bin by using the PHP system fu........
  • PHP imagecreate() not found but compiled with GD


    PHP imagecreate() not found but compiled with GDHere is what I get: [code:1:be41bc7717] Fatal error: Call to undefined function: imagejpeg() in image.php on line 56 [/code:1:be41bc7717] I am positive it is compiled with GD so I don't get the errorI need to install the linux-jpeg package then I need to recompil........
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