http://www.codza.com non-denominational computing Mon, 22 Mar 2010 14:30:26 +0000 http://backend.userland.com/rss092 en The iPhone SDK provides a high level movie player, but so far there is no way to decode movies or extract frames. In this post I will show you how to do that using FFmpeg. First, thanks to the FFmpeg project, Martin Böhme for his tutorial on using libavformat and libavcodec ... http://www.codza.com/extracting-frames-from-movies-on-iphone For some strange reason there is no way to specify a company name in XCode. Most source code templates include __MyCompanyName__ in the comments. To change it, open terminal and type this command replacing __MyCompanyName__ with whatever you want: defaults write com.apple.Xcode PBXCustomTemplateMacroDefinitions -dict ORGANIZATIONNAME "__MyCompanyName__" For example: Restart XCode. New files will be ... http://www.codza.com/change-mycompanyname-in-xcode-templates EXC_BAD_ACCESS. Debugging this one is on par with figuring out why the wife says "not tonight, honey." And they are equally unfortunate situations. Let's see what we can do about EXC_BAD_ACCESS. EXC_BAD_ACCESS happens when a message is sent to an object that has already been released. By the time the error is ... http://www.codza.com/how-to-debug-exc_bad_access-on-iphone I came across this issue when I received a UTF-8 encoded string from a URL. I was expecting the UTF-8 string to be automatically decoded, but then I realized that it's probably not trivial to identify a UTF-8 string, so NSString doesn't automatically do this for a reason. (Unfortunately, this realization ... http://www.codza.com/decoding-utf-8-nsstring I needed a quick way to encode an NSString to be used in a JSON object in an iPhone project. There are libraries to do this like TouchJSON, but I didn't want to link a whole library to insert a string into a Facebook query. A JSON string looks like this ... http://www.codza.com/converting-nsstring-to-json-string The OS X registration process can come up with some pretty stupid computer names like chuck johnson's macbook. This will show up in the Terminal, on the network and it has a freaking single quote and spaces in it ?! Here's how to rename it to something that makes sense, like ... http://www.codza.com/how-to-rename-a-mac-and-change-the-hostname-in-os-x Microsoft offers a tool to create a bootable USB stick (thumb drive? flash drive? floppy disk?) using a Windows7 ISO image, but if you purchased an educational/student copy of Windows7, it won't work for you. Don't be sad, you can create a bootable USB stick installer from the online download. It's ... http://www.codza.com/installing-windows-7-from-usb-stick Adobe Photoshop CS4 comes with a script that exports layers to files, but it adds layer numbers to the file names by default. After lots of manual renaming I decided to add an option to suppress the layer numbers. You can download the modified Export Layers To Files script from here. ... http://www.codza.com/suppress-layer-numbers-in-export-layers-to-files I've recently replaced the network card in my Acer Aspire One 250 netbook with a Dell DW1510.I had some trouble finding the drivers on Dell's site, so I'm posting the info here. The DW1510 uses the Broadcom 4322 chip and supports 802.11n wireless networks and seems to have better reception than ... http://www.codza.com/dw1510-windows-xp-drivers I've recently worked on an update to MeanPhoto. The project was originally done using the iPhone SDK 2.1. I made the new distribution build with the 3.1.2 SDK without any issues, but when I uploaded the binary on iTunesConnect, I got an error saying that the app was not signed ... http://www.codza.com/provisioning-profile-not-showing-in-2x-project