https://youtu.be/DqS606K0Jdk
A lot of you guys have requested this, so I thought I'd make a video on it! I'm quite new to making tutorials like this, so please leave a comment if anything I explained was unclear.
Download Shotcut (the editing software for adding the timer): https://shotcut.org/download/
Timestamps:
0:00 Sponsor message
0:06 Intro
0:33 Downloading Shotcut
1:03 Importing footage
1:24 Cropping footage
1:59 Adding the timer
2:16 Formatting the timer
3:08 Saving a preset
3:56 Incorporating the timer into your solve
5:24 Exporting the video
5:35 Bonus tip for solves over a minute long
6:03 Outro