Timelapse

Turn the snapshots from --record-type=snapshot into a timelapse video at 30 fps.

1. Make the file list

ffmpeg -f concat needs one file '...' line per image, in order:

find /mnt/ext_disk/video/20260509/ -type f -iname "*.jpg" | sort | sed "s/^/file '/; s/$/'/" > file_list.txt

2. Encode the video

ffmpeg -f concat -safe 0 -i file_list.txt -r 30 -c:v libx264 -pix_fmt yuv420p timelapse.mp4

-safe 0 allows absolute paths in the list.
-r 30 sets the frame rate of the video.
-pix_fmt yuv420p makes it play in browsers and on phones.

Put the video in <record-path>/timelapse/. Clients can then list it with QUERY_FILE and mode: TIMELAPSE. See Browsing recordings.

Storage

Give recordings a disk of their own, so they do not fill the system disk. Use a USB drive, or a disk image with a fixed size.

Integrations

Connect pi-webrtc to your own software. Send messages both ways, read a gamepad, show the camera in Home Assistant, or stream from a ROS robot.

On this page

1. Make the file list 2. Encode the video 3. Share it with clients