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Show HN: Web Video editor, 100% local, AI subtitle, auto cut based on volume

https://silenceslicer.com

I made this mostly to make content creation faster.

When recording a youtube video/ podcast. there's alot of downtime (silence) while looking at scripts or getting the correct item to display. So I made a webapp to automatically cut and stich the video back together then I can further edit in davinci resolve.

But I recently found out that this is crazy good for rewatching lectures or meeting recordings, No need to render, just drop the video in and watch it right away.

30min lecture can be watched in 12min!

I even added auto generation of subtitles to make studying lecture /meeting better.

Best of all everything runs locally, even the AI is running local models.

Hope HN finds this useful like it did for me!

( 15 comments | 2 points | on HN )
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by mertleee on Saturday April 19, 2025 @09:32PM (#43740876)
Hey, I've built a very similar tool aimed at creating shorts! Would love to potentially collaborate.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Saturday April 26, 2025 @07:06AM (#43802569)
Cool! Link?
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by bluecrab on Sunday April 20, 2025 @05:02AM (#43742566)
If it's 100% private as you state n your website, it would be opensource.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by thisislife2 on Sunday April 20, 2025 @10:36AM (#43744053)
Not necessarily - if it works offline (without internet), that also satisfies the "privacy" requirement for many of us.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by dharmab on Sunday April 20, 2025 @11:40AM (#43744482)
Not necessarily - software can collect data offline and then send a payload at a later time.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Saturday April 26, 2025 @06:50AM (#43802484)
It definitely can! However that is easily verifiable. First is that. You can see in the network tab that nothing is uploaded Second is that you can just close the tab before enabling internet. It’s not possible to send payload if the webpage is gone.

Either way I’m not collecting video information. It’s gonna bankrupt me just on storage fees given how videos are so large

Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Saturday April 26, 2025 @06:56AM (#43802514)
Funnily enough. It was open source. But I had to close it because it was getting in the way of my implementation velocity. I can always open source it again. But there’s a decent chunk of work to clean the code up with keys etc. Also when it was open source I got 0 PR it was mostly just ppl filing bugs which makes me think my audiences don’t really care, and I could just save time if close source it
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by d3Xt3r on Sunday April 20, 2025 @05:54PM (#43746779)
Is this lossless? Or does it re-encode the video (resulting in a loss of quality)?
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Saturday April 26, 2025 @06:46AM (#43802464)
Lossless! I think that was one of my biggest pet peeves on why lots of video editors would re-encode.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by evolve2k on Tuesday April 22, 2025 @03:39PM (#43765538)
Cool service, difficult to use website. On my iPhone random videos kept full screening as i scrolled down and the site was almost unreadable with Firefox dark mode on (I’m reading at night).
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Saturday April 26, 2025 @07:03AM (#43802554)
Ah I didn’t consider phone usage haha. Didn’t expect people to edit video using phones. It theoretically should work. But I’ll take a look and see if it’s fixable.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by evolve2k on Sunday April 27, 2025 @09:20PM (#43816632)
Might be less people using the tool on the phone and more folks discovering your site via socials etc. the homepage at least needs to be responsive.
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Monday April 28, 2025 @11:57AM (#43822909)
Yea that’s a great point!

It should be mobile friendly now. I did do some quick tests. While the format support on mobile is super limited. It actually runs AI extremely efficient. Crazy how powerful phones gotten these days.

Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by LauraMedia on Tuesday April 22, 2025 @04:14PM (#43765823)
I'm a bit confused, why is this 100% local web video editor asking for a login when exporting a video?
Re:Show HN: Web Video editor, 100% local, AI subtitle, auto ... by jerryliuoft on Saturday April 26, 2025 @07:01AM (#43802535)
2 reasons!

Most important reason is to link membership.

Second is to prevent abuse for some of my features. Think of it like my poor mans recaptcha.

I can see why you were confused. Local in this case really meant there’s no uploading of videos. Render, editing, processing all done on your computer. Which also meant that speed of the app could vary depending on if you use it on your Apple Watch vs gaming pc. Hope that helps!