How I recorded my first product demo in 54 seconds (OBS, ffmpeg, openai.fm)
I shipped my first product demo video this week for Convertify (my free image converter). 54 seconds, no team, no budget. Here is the exact toolchain and what I would change next time. The stack OBS Studio for screen recording at 1920x1080, 60fps, CRF 20. The 60fps is not vanity. Product demos live and die on smooth scroll and cursor motion. 30fps for a converter tool with drag-and-drop looks…
I recorded my first product demo video in just 54 seconds, using only free, open source tools. The entire process involved OBS Studio for screen recording at 1920x1080 resolution and 60 frames per second, followed by trimming and cropping using ffmpeg. The voiceover was generated using openai.fm, with the Ash voice selected for its clarity in technical explanations.
The final video was merged using ffmpeg, with audio and video processed separately to allow for quick re-recording of the voiceover if needed. Lessons learned included starting the script with the user's pain point rather than the product name, scripting cursor movements ahead of time, testing all voices upfront, and recording the screen segment before writing the voiceover.
The product demo is now available at convertifyapp.net, offering a free, watermark-free solution for converting HEIC files to JPG.
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