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Author Archives: carson

Converting from VirtualBox or VMWare to EC2 now Easier than Ever

The new PV-Grub ability introduced by Amazon for EC2 has opened the door for more than just custom kernels, it also makes it a lot easier to turn VirtualBox and VMWare instances into EC2 instances. In the past I have written about transfering VirtualBox images to Xen but to do that with EC2 required a [...]
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Installing Cent OS 5.5 on EC2 with the Cent OS 5.5 Kernel

Amazon recently introduced the ability to boot a custom kernel using pv-grub on EC2. This opens the door for all kinds of interesting ideas that I've been thinking about for a while, like seeing if I can boot right into a web server and skip all that extra junk that comes with Linux distributions, but [...]
Posted in system administration | Tagged , , , | 7 Comments

Compiling WebM into FFMpeg for Windows

I have updated this post with a newer version of the VP8 patches to FFMpeg and support for libvorbis instead of the built in vorbis support. Google has released source for the VP8 codec as the WebM project. The WebM project will be an open alternative in the HTML5 video tag codec space and being [...]
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Upgrade to Fedora 13 from Fedora 12

After a week delay Fedora 13 has been released and it is time to upgrade of course. As always there are a decent number of features in this release but here are a few that stand out to me: boot.fedoraproject.org – A small bootable image to start the install from. IntelliJ IDEA – IntelliJ IDEA [...]
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Faceted Search With Sphinx

I decided to use the Sphinx search engine for the GeeQe iPhone app I build last year because it was fast and had a very small memory footprint. Recently I wanted to experiment with a search interface that had facets and wondered if I would need to move away from Sphinx to something like Solr. [...]
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How to Create iPad Formatted Videos Using HandBrake or FFMpeg

This is for those who may want to load a video onto their iPad with iTunes that isn't in the correct format. I needed to do this because I was trying to put an iTunes University video on my iPad a couple days ago and iTunes complained that it wasn't in the correct format for [...]
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iPad Streaming Video and More

I've updated the configuration examples in the open source segmenter project to reflect Apple's recommended stream bitrates for iPad video streaming, added a few fixes and a few new features. If you are interested in streaming video on the iPad, iPhone or iPod Touch and haven't done so yet you it may help to start [...]
Posted in programming | Tagged , , , | 18 Comments

Using Cursors with PHP MySQLi and Multiple Prepared Statements

After my post on using PHP MySQLi and multiple prepared statements at the same time someone commented that using cursors could do the same thing. With that comment I dug some more and found that modifying the cursor type that is used under the covers will indeed let you execute multiple prepared statements concurrently on [...]
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Spring 3 File Upload Example

I had the opportunity to figure out how to do file uploads using Spring 3 the other day and I couldn't find anything that pulled it all together. What follows is a complete example of how to do MVC based file uploads with Spring 3.
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Parsing the SXSW Twitter Stream for Fun

Over the weekend I decided to toss together a simple twitter stream monitoring app that would capture SXSW tweets. I wanted to build on some of what I learned while hacking together the stuff for code2009 and it was also an excuse to play with node.js and a few other things. I figured I would [...]
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