Weathercam timelapse capture March 25, 2021
Channel: hunt1803
Date: 2021-03-27

*update* The puffy clouds turning into a rainstorm is an example of a weather event called an Orographic Lift.  Thanks to RogueWeather.com !

A rather unassuming start to what turned out to be a spectacular batch of weather in timelapse! 
Undulating puffy cotton balls start circling and become a dark precursor to an afternoon downpour in the valley and lots of crazy weather.  I am adding a bit of youtube music background this time; let me know if you like these timelapse better silent or with musack. 

Timelapse created using an inexpensive USB Webcam pointing out at the world from inside our home towards the North/Northeast. Connected to an older laptop running OBS Studio and ffmpeg freeware to record and process the video.  

To get the timelapse effect I researched how to set parameters in OBS Studio to record at 1/6th of a frame per second. This captures a frame of video every 6 seconds. Unless the recording is modified, that frame will also take up 6 seconds of the playback from the raw recording, sort of like a slide show.  

To make this into a usable timelapse, I have to remove that extra length of each frame. So I processed the video using ffmpeg, another open source tool, to shorten those frames and get the video to have the timelapse effect.

I've added some overlays to the OBS Studio recording. One to indicate day and time, and the other to display a portion of my home weather station data.