Camera board • rpicam-lapse - Rpicam timelapse video recording application

Ever wanted to generate timelapse video, without generating hundreds or even thousands of images and requiring FFMPEG to stitch these images into video, all running on Raspberry Pi? Well, fret not, as I've finally created a modified version of rpicam-apps to include a new command called "rpicam-lapse".

rpicam-lapse is designed to be consistent with the timelapse interval set between still image capture, i.e if you set 1s interval for 1 minute recording, you should expect to get 60-61 frames captured in total. (This is provided that the maximum shutter time set does not exceeding the timelapse interval)

Here's my forked rpicam-apps repo with the added rpicam-lapse: https://github.com/shouta569/rpicam-apps
And here's the only commit that I've added to my forked repo: https://github.com/shouta569/rpicam-app ... ad155ef81c
Feel free to modify the code as you see fit.

Follow this link guide to build custom rpicam-apps
https://www.raspberrypi.com/documentati ... picam-apps

The supported options used for rpicam-lapse are similar to common and video options, with 2 new options:

• Interval - Duration between captured still images (Default: 1000ms)
• Autofocus-on-capture - Run autofocus once before capturing timelapse video (Default: false)

Side note: "no-raw" default value was set to true to avoid unintended image cropping.

Here's an rpicam-lapse example in Raspberry Pi 3B+ running on Raspberry PI OS Lite (Buster)

And here are some of the rpicam-lapse options I've tested and worked so far:

• interval, timeout & framerate - Tested for 1 hour with interval set to 1000ms and framerate set 60, consistently produce 1 min video
• autofocus-on-capture, lens-position & hdr - Tested with Raspberry Pi Camera Module 3 (both with and without HDR)
• tuning-file - Tested using custom tuning file
• width & height - Tested with 3840x2160 (4k) and 1920x1080 (1080p)
• post-process-file - Tested using annotate_cv.json
• codec
  • h264 (default) - Tested at 1080p60 (4k is not supported)
  • libav - Tested at 1080p60 (HDR) and 4k60 (non-HDR) on mp4 and avi file
    Side note: 4k60 only works by setting "--libav-video-codec libx264". Also, cooling fan (at least for my Pi3B+) is required for 4k timelapse capture
  • mjpeg - Tested at 4k60, but the framerate of the output video set to 25fps for some reason. Also, refer to this if you want to play MJPEG video in VLC.

Hope you enjoy this new application and do provide some feedback. Thanks.

Statistics: Posted by ongeelim — Fri Dec 27, 2024 6:11 pm — Replies 0 — Views 28

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