The left images are from the North Fork American River in the 1000-2000 foot elevation band. The images in this video are taken by a pair of identical game cameras that take an hourly picture, on the hour, 24 hours a day. This video shows images and hydrographs from two nearby rivers capturing the same moment in time. After a year's worth of captures, we realized we could do some other processing with these videos. Part of this research includes monitoring the river's edge habitat with remote game cameras. The Center for Watershed Sciences has a set of study sites on rivers throughout the northern Sierra Nevada range in California. Time Lapse Hydrography for North Fork American and South Fork Yuba Rivers in California from Center for Watershed Sciences on Vimeo. Additional Examplesįor additional examples, using code developed by Nick Santos (using python and perl):Ĭosumnes River Streamlapse 2015 from Center for Watershed Sciences on Vimeo.Ī Streamlapse video of the Cosumnes River for the early 2015 floods North Fork American October-December 2016 from Center for Watershed Sciences on Vimeo. The following example is from the NF American in 2016. Some examples below can be found on the CWS Vimeo website. Here are some example stills of the two different plots and a composite photo. If not, many options like VirtualDub, Moviemakier, iMovie, etc.

If you have ffmpeg, you can create quick timelapse.

Use -composite call to imagemagick to get timelapse photo and overlay plots.

Make thermohydrograph plots or hydrograph plots for each photo, synced to photo timestamp.

Get logger/temperature data for creation of overlay and subset to photos (can subset using specific date window as well).

Get a list of the photos in the folder and use imagemagick to pull photo info (datetime, baro, exposure).

Create folders and copy the timelapse photos to the photos folder.

There are several components, but the main requirements are imagemagick and ffmpeg. (Center for Watershed Sciences, UC Davis) The Script Process This is a process that can take some time running in parallel may speed initial processing of photos. This repository is set up to provide an R-based process to take timelapse photos from any given site, sync with flow or temperature data, and overlay plots in the photos before stitching together into a mp4/avi.

This project is maintained by ucd-cws Timelapse Hydro Code to make timelapse hydrography movies via R.

Ffmpeg speed up video time lapse