To stitch videos together horizontally losslessly using the audio from the left-hand video:
$ ffmpeg -i left.mp4 -i right.mp4 -filter_complex "hstack,format=yuv420p" -c:v libx264 -crf 18 output.mp4
To rotate a video clockwise:
$ ffmpeg -i in.mov -vf "transpose=2" out.mov -c:a copy
To add an application or script to always start when Windows has finished starting up and logged in:
- Press
Win+Eto open a file explorer. - Paste this into the address bar:
%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup - Create a shortcut to the application you’d like to start and add it to the Startup folder.
WiFi USB
To compile & install usb -> wifi dongles for the Raspberry Pi for different kernels, use this script: http://downloads.fars-robotics.net/wifi-drivers/install-wifi
Run it as sudo: $ sudo ./install-wifi.sh
You may need to chmod it to make it executable: $ chmod +x install-wifi.sh
If it fails to self update, try commenting out those lines (line ~399) and re-run.
The script will need to be run every time you update the kernel version via $ sudo apt update.
Setting the date/time
If your pi won't get the time from an ntp server, you can run this one liner to set it from your favourite website:
$ sudo date -s "$(wget -qSO- --max-redirect=0 google.com 2>&1 | grep Date: | cut -d' ' -f5-8)Z"