Update cheatsheets

linux/rpicam-vid

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rpicam-vid
+
+> Capture a video using a Raspberry Pi camera.
+> Some subcommands such as `vlc` have their own usage documentation.
+> More information: <https://www.raspberrypi.com/documentation/computers/camera_software.html#rpicam-vid>.
+
+- Capture a 10 second video:
+
+`rpicam-vid -t 10000 -o {{path/to/file.h264}}`
+
+- Play the video using `vlc`:
+
+`vlc {{path/to/file.h264}}`