The new version of HipChat added support for video and screen-sharing. It also introduced the new requirement of OpenGL 2.0. On my computer, HipChat would crash on startup with repeated messages of [code] can’t find build id HashElfTextSection can’t find build id HashElfTextSection can’t find build id HashElfTextSection can’t find build id HashElfTextSection [/code] I […]
Archives for the ‘Graphics’ Category
Batch organize photos by date
Sunday, 9 June 2013
I wanted to get a pile of jpegs organized by the year, and then the day. For example, IMG00001.JPG would go in 2013/06-04 based on its EXIF creation date. The handy exiftool can do this, via its own virtual “Directory” tag. The “Directory” tag is not an actual EXIF tag, but exiftool will move the […]
Convert video with subtitles to MP4 for iPhone/iPad (preliminary notes)
Wednesday, 17 August 2011
By now, we know of a few requirements for viewing video on iOS (iPhone/iPad et al.). The video codec should be H.264 or another “standard” MPEG codec, and the audio should be AAC. AC3, as far as I know, is not supported. That’s all fine and dandy, but subtitles have been one of the trickiest […]
Command-line snippets for processing scans
Sunday, 14 August 2011
I originally wrote this in 2009 as a cheatsheet for processing black and white scanned sheet music. It’s a collection of tips for converting and processing scanned images to ultimately get a nice, high-quality PDF that you could archive. The programs convert and mogrify are part of the ImageMagick suite and the program pdfimages is […]
How to scan like a pro
Sunday, 9 November 2008
Scanners have been around for a long time, and today’s scanners are cheap, are fast, and produce high-quality output. Still, people haven’t figured how to make good scans—just take a look at scanned scores, manga, etc.—from their scanners. This means the difference between: and Guide follows: