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Comment by kevsim | Hacker News Reader

This is very cool, but for me the problem has always been the repeatability of demo videos. I make a demo video of our product, and two weeks later that demo is out of date and now I need to make the same video again.

Additionally, the need to add fake CSS pseudo classes to get it to work with focus, etc. seems like a bummer.

Nonetheless, seems like a nice compact way to make and share demos, so well done!

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Repeatability can be such a pain. Company I used to work for had separate product and marketing teams that didn't talk to each other much. Which meant that by the time the recording was finished a new product update had been pushed out which made the whole recording obsolete.

This problem inspired me to build https://RecordOnce.com which does the re-recording automatically and periodically.

For the initial recording we also uses rrweb. (Can't wait to get us on the rrweb donor/supporter list!)

Justin’s cofounder here:

Example video that was completely generated by the bot: https://video.recordonce.com/play/dBZ66RussA8

That's addressed in the post too. They make their demos as Selenium scripts so in many cases they can simply re-record the demo when the UI changes.

Exactly — you could even automate this and add it to a CI pipeline, no? Very, very cool.

Yes, it would be very easy to do in CI, just one shell command.

We don't, because we don't need to update the demo movies often so it saves cycle time to trigger updates manually when required.

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