Format Video Length in HH:MM:SS from Command Line
In my experimentation with audio and video manipulation, I've found that most tools prefer to handle time in HH:MM:SS (hour:minute:second) format. I always presumed that using seconds would be easier but I'm barely a novice media tool user, much less a tool creator.
When I wrote the Create Short Preview from Video post, I calculated the video length in seconds with the following command:
length=$(ffprobe $sourcefile -show_format 2>&1 | sed -n 's/duration=//p' | awk '{print int($0)}')]
That was helpful in detecting if a video was long enough to generate a preview for, but I then needed to get that length in HH:MM:SS format:
formattedlength=$(printf "%02d:%02d:%02d\n" $(($length/3600)) $(($length%3600/60)) $(($length%60)))
In the end you need to evaluate loads of individual statements to get your final HH:MM:SS format!
![An Interview with Eric Meyer]()
Your early CSS books were instrumental in pushing my love for front end technologies. What was it about CSS that you fell in love with and drove you to write about it?
At first blush, it was the simplicity of it as compared to the table-and-spacer...
![Vibration API]()
Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user. One of those simple APIs the Vibration API. The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...
![Fade Images with MooTools LazyLoad]()
I recently received an email from a MooTools developer asking a great question about my LazyLoad class:
"I'm using your LazyLoad MooTools plugin (which is great, by the way). I have been trying to figure out how to modify it so that once an image scrolls into...
![Custom Scrollbars in WebKit]()
Before each of the browser vendors we like was providing unique CSS controls, Internet Explorer was setting the tone. One such example is IE's early implementation of CSS filters. Internet Explorer was also the first browser that allowed developers to, for better or worse, customize...
