top | item 33421751

Rewind: The Search Engine for Your Life

164 points| mxstbr | 3 years ago |rewind.ai

90 comments

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[+] timfrietas|3 years ago|reply
I've been a beta tester for a few weeks now. And as a Search and Discovery person I have plenty of granular feedback and feature requests for Dan, Brett and team that I still owe :)

Overall it has helped me in a couple situations. I will say when I was onboarded I don't believe audio was mentioned and a quick search for things I know I said in Zoom recently comes up empty--perhaps that functionality is new?

For now, I've found that I haven't yet hit the equilibrium point where I've forgotten something badly enough to replace my instinct to use Spotlight, browse Finder, or even search Google Drive (shudders). The Fitness app on iOS needs 180 days of data before it shows you trends; I feel like Rewind is similar in that I need a critical mass of data and time before I truly don't know where to look and go to Rewind first. Audio support would greatly reduce that window, however, so maybe I am missing out.

Overall I definitely recommend trying it out, however!

[+] singhshashi|3 years ago|reply
Congratulations on the launch! Looks fantastic! I have built a product https://gettrici.com that records your screen and stores the recordings locally as well. As a developer, watching a quick replay of my recording helps me recover my lost train of thought very very fast and saves me a ton of time. [ Show HN Post: https://news.ycombinator.com/item?id=29277671 ]

Its great that you have leveraged the power of Apple Silicon to analzye and index the recordings as well as keeping the size of the recordings very very small. Do you see this becoming available for Intel Chipsets a.k.a Windows and Linux anytime soon?

[+] shubhamjain|3 years ago|reply
Claim: For your privacy, we store all of the recordings locally on your Mac. Only you have access to them.

From the docs:

> Video data is never sent off your Mac. The only data sent to a cloud service is the audio. We send it to a cloud transcription service in order to generate a transcript of what was said. This transcript is created so you can read it and search for specific words that were said. [1]

Yeah, we only "store locally", but hey, that doesn't stop us from sending it to a third party service for transcription. I was already uncomfortable with the idea of being voice recorded. Reading between the lines of how it works doesn't inspire a ton of confidence.

[1]: https://help.rewind.ai/en/articles/6526620-recording-meeting...

[+] dsiroker|3 years ago|reply
The reason we wrote that article is to be 100% transparent about what happens to your data. No reading between the lines necessary.

The only time this cloud-based transcription is used is during a Zoom meeting, which is already in the cloud.

When you join a new Zoom Meeting we prompt you to ask if you want to record & transcribe the audio. You can choose to do this selectively for each meeting, or not record & transcribe any of them if you aren't comfortable with cloud-based transcription.

That said, we do plan to move away from cloud-based transcription, likely with Whisper from OpenAI.

[+] nshm|3 years ago|reply
They could easily use offline transcription like Vosk
[+] squokko|3 years ago|reply
Then don't use it
[+] Toine|3 years ago|reply
Feels great to see ambitious products like these pop up every now and then. I feel like there are too many boring startups nowadays. Yes, there's a big brother feel to it, but I believe it's a feature, not a bug. Otherwise it might not be innovative enough...

Edit : do you hire EU citizens ? :)

Edit edit : most of the world doesn't use macOS : what's your long-term vision for non Apple silicon users ? On smartphones ? Any plan on a hardware product that literally records everything you say ?

[+] 8en|3 years ago|reply
I really admire the ambition of this product. I've noticed how much I use the internet as a "second brain". Being able to quickly get back to things would improve my life.

The UI also looks very good for a first version. Excited to give this a try!

[+] thundergolfer|3 years ago|reply
This looks awesome. The Entire History of You is my favorite Black Mirror episode and yet I still want this personal search functionality and much more.
[+] justinlloyd|3 years ago|reply
Interesting product. I will take a wait and see approach though because my trust of companies pinky promising not to upload my data, especially when dealing with such invasive data as camera and audio and screen recordings, has been wearing thin of late.

I've been recording my desktop on Mac, Windows and Linux, recording audio in my office, including transcription of the audio, and multiple camera capture for over a decade since early 2000's, and using a SenseCam-like device, on-and-off, for almost 20 years. My current setup of an NVidia Jetson does an admirable job of determining if one or more people are in the room, the activity they are engaged in, multiple camera angles, transcribing what is being said, music identification, desktop image capture and OCR of the images is very much kept locally and I can be assured nothing is leaking out without my explicit knowledge. I have a custom device on my desk that I built that can "pause the recording" or "forget the last 30 seconds" or "forget the last five minutes" for those events that probably shouldn't be captured, e.g. I'm picking my nose and carefully inspecting whatever was retrieved.

[+] v8xi|3 years ago|reply
Wow - would love to hear more about the hardware/software stack you're using to perform all this. And how do you go about it when away from the office?
[+] gardenfelder|3 years ago|reply
This seems pretty cool. There's an OSS platform [1] which is nowhere near as powerful, but on the same path

[1] https://memex.garden/

[+] stoicjumbotron|3 years ago|reply
I honestly don't think this is in the same realm

This is more akin to Raindrop or a bookmarking addon with notes and folder structure built int

[+] theropost|3 years ago|reply
I've started some work on a similar project as well on Windows. We should be able to fully query our lives, and we should also be guaranteed that data is ours. I believe this is where data collection should go - your data is yours, and you own it. All the data that Google, Facebook, Apple, Amazon, etc collect on us, yet we have such limited access to it. This should be ours, and ours to analyse, search, and gain insights on in any way we wish. This should really be an open-source, community project as well - tools, analytics, apps, all made to help you be a better version of yourself.
[+] mlajtos|3 years ago|reply
The compression rate seems like a magic. Surprised nobody talks about that point...

Signed up for the beta. Really curious about it.

[+] froster134584|3 years ago|reply
I'm pretty sure this is a BS marketing claim. Their site mentions "We compress raw recording data up to 3,750x times". This is just the regular hardware supported h.265 codec that comes in every mac. They're claiming "up to" because there are compressed frames such as B-frames that are the smallest frames which can typically be as small as 2000 - 4000 bytes. So if you look at an uncompressed 4k frame (3840 pixels * 2160 pixels * 10 colordepth)/ 8 = 10.368 MB. So an uncompressed frame of 10.368 MB / 2700 Bytes (H265 B-Frame) will give you ~3750X compression.

I could be wrong but I'm skeptical about this claim because video compression can't be done so simply just by creating a new algorithm and writing it in software. Especially the newer codecs such as h265, h266, and AV1 must be in hardware or else it would be too computational heavy and your device will just choke up trying to spend so much cpu time compressing when you're trying to run other processes.

Also if it was their own video compression, they would have to write their own decoder for their own player for every device. That is way too much for a start up to take on. It just smells like BS to me.

[+] staticfish|3 years ago|reply
I believe it's because they are using middle-out compression.
[+] singhshashi|3 years ago|reply
Agreed. The compression seems pretty impressive.
[+] danielovichdk|3 years ago|reply
I would rather have everything deleted by default. But with an option to opt in for saving things locally.
[+] flyingsky|3 years ago|reply
Looks interesting but also seems kinda creepy
[+] dsiroker|3 years ago|reply
Totally understand how it might feel that way initially. Rewind is built privacy first. Unlike other cloud-based products, all of the recording data is stored locally on your Mac. It's not accessible to others (or to us as employees).

Not only that, but we have the following features focused on privacy:

1. Full control: users can pause and delete recordings at any time

2. Exclude apps: users can exclude specific apps they don’t want recorded (e.g. Signal or 1Password)

3. Incognito: by default, we don't record Chrome Incognito or Safari private browsing windows

We have a long roadmap of things we have planned to further our commitment to privacy. Anything in particular you'd love to see us implement that might make you feel more comfortable?

[+] mcast|3 years ago|reply
Side note the landing page with it's hard gradients and shadows looks like something from the late 2000s when you would buy Mac apps without the App Store
[+] PStamatiou|3 years ago|reply
That was me. The site definitely has some areas I need to refine, but I'm bringing some gradients and shadows back. We've lived in a flat world for far too long.
[+] mitchdoogle|3 years ago|reply
This looks very much like many contemporary sites. Stripe comes to mind
[+] dsiroker|3 years ago|reply
I'm Dan, co-founder & CEO of Rewind.

I am eternally grateful to Hacker News for helping me launch my first startup, Optimizely (YC W10), so I’m back here to launch my second one: Rewind.

Rewind is the search engine for your life. Check it out: https://www.rewind.ai

It’s a macOS app that enables you to find anything you’ve seen, said, or heard.

We’re also announcing that we’ve raised $10m at a $75m valuation led by Andreessen Horowitz.

In case you are curious, the inspiration for Rewind came from an unlikely place:

Our founding story

I started to go deaf in my 20s. When I turned 30, a hearing aid changed my life. To lose a sense and gain it back again felt like gaining a superpower. Ever since that moment, I’ve been on a hunt for ways technology can augment human capabilities and give us superpowers.

That hunt ultimately led me to memory. Studies show that 90% of memories are forgotten after a week. Just like our hearing, our memory gets worse as we get older. But does it have to? If we have hearing aids for hearing and glasses for vision, what’s the equivalent for memory?

What if we could use technology to augment our memory the same way a hearing aid can augment our hearing? This question is why we founded Rewind. Our vision is to give humans perfect memory.

Introducing Rewind

Here’s how it works:

1. Local and Private By Design: We record anything you’ve seen, said, or heard and make it searchable. For your privacy, we store all of the recordings locally on your Mac. Only you have access to them. Learn more: <https://help.rewind.ai/en/collections/3616305-privacy>

2. Mind-Boggling Compression: Storing all the recordings locally means compression is very important. We compress raw recording data up to 3,750x times without major loss of quality. For example, 10.5GB of raw recording data becomes 2.8MB. That means that even with the smallest hard drive you can buy from Apple today, you can store years of recordings.

3. No Cloud Integration or IT Required: In order to enable you to search for anything you’ve seen, we use native macOS APIs and Optical Character Recognition (OCR) to recognize & index all the words that appear on your screen. This means you don’t need to integrate with cloud products like Gmail, Dropbox, or Slack. Rewind starts capturing these apps right away, with no IT required. Also, OCR enables you to copy & paste anything from your past.

4. Meetings: In order to enable you to search for anything you’ve said or heard, we use state-of-the-art Automated Speech Recognition (ASR). This is particularly useful for meetings, where the content of discussions, debates, and decisions are often lost forever as soon as a meeting is over. With Rewind, you never have to worry about losing this content again. Rewind can capture the content of meetings, including everything that is said and everything that is shared visually. All of the content is searchable. You can go back to the exact moment in a meeting you are looking for by simply searching for a word that was said or a word that appeared on your screen. Learn more: <https://help.rewind.ai/en/articles/6526620-recording-meeting>

5. Unleashes Apple Silicon: The key enabling technology that makes Rewind possible is Apple Silicon. We utilize virtually every part of the System on a Chip (SoC) so that running Rewind doesn’t tax system resources (like CPU and memory) while it is recording. It feels virtually imperceptible.

Rewind is just the first step toward our vision of giving humans perfect memory.

Please share any and all feedback you might have! We’re all ears

[+] spullara|3 years ago|reply
FYI, recording someone without telling them in California is illegal so be careful with this when you are talking to people.
[+] mritchie712|3 years ago|reply
Dan! Can't find the tweet (bc I didn't have rewind yet), but Patrick Collison described this exact product in a tweet once. Amazing work. There's a mic drop moment in the demo when you're able to click on the link shared in the zoom, totally sold me.

If you could bump me on the invite list ([email protected]), would truly appreciate it. I'm a good beta user, promise.

[+] fragmede|3 years ago|reply
Personally/imho/since you asked/nitpicks - point 2 and 5 are overly technical. For 2, it's a really great thing that the data compresses down, but my local machine has enough space that I don't think about local storage because I've not run out of space. (yet, on my M1 macbook air.) I'd lead with "you can store years of recordings on the smallest hard drive apple sells". Maybe mention how awesome your compression is as enabling technology.

For 5, start with "It feels virtually imperceptible." rather than end with that, and don't define/use SoC. Maybe something like "Unleashes Apple Silicon: Thanks to the advancements with Apple Silicon, the overhead of Rewind is virtually imperceptible by utilizing every part of the chip including the Media Engine."

Really intrigued by the product and hope I can try it soon!

[+] parthianshotgun|3 years ago|reply
Have you ever read Ted Chiang's 'The Truth of Fact, the Truth of Feeling'? What if forgetting is a part of forgiveness or healing? Eidetic memory seems fraught to me, but I'd love to know your thoughts on this.
[+] rrwo|3 years ago|reply
> We record anything you’ve seen, said, or heard and make it searchable. For your privacy, we store all of the recordings locally on your Mac. Only you have access to them

Until an unauthorized person gains access to your computer.

I'm assuming there is some sort of encryption, but if the software can transparently decrypt the data to access it, then what is to prevent someone stealing the key from the software?

How is this affected by wiretap and privacy laws, where you would need the consent of other people in the room?

At home, I certainly don't want something recording every sound.

Even at work, I don't want everything recorded. Sometimes people need to communicate freely and discretely, e.g. your manager says to you like "Don't prioritize the CEOs request. It's a bad idea and won't go anywhere. If he asks you, we're working on it. I'll deal with the fallout later."

[+] edm0nd|3 years ago|reply
Since a16z is involved, it seems you are gunna look for a buyer and then peace out.

What companies do you think would be interested in purchasing Rewind and why?

Why focus on Macs when the majority of the world uses Windows?

[+] DeathArrow|3 years ago|reply
I have two questions:

1. You claim that the user data is stored locally, that no data is sent to the cloud but audio is sent to a cloud transcription service. How do you reconcile these things?

2. What languages does the app support?

Thank you.

[+] Hadriel|3 years ago|reply
Hi Dan, curious if you guys might be looking for a product person for the team in the future.
[+] yewenjie|3 years ago|reply
Given that OpenAI Whisper is open source now, and pretty near SOTA, I think creating an audio only open-source version of this shouldn't be difficult. However, I don't know how to easily contextualise the audio - how would I search 'name of the movie I was discussing with Zeynep last week'?
[+] thundergolfer|3 years ago|reply
Yes it does seem within reach. Even just the base-en whisper modal with 74M params performs remarkably well on transcription (the large model has 1550M params!).

Compare a base-en whisper transcription to a human transcription. This is the A Powerful Theory of Why the Far Right Is Thriving Across the Globe latest episode of the Ezra Klein Show, transcribed just now:

1. [whisper] https://modal-labs-whisper-pod-transcriber-fastapi-app.modal...

2. [human] https://www.nytimes.com/2022/11/01/opinion/ezra-klein-podcas...

(You can use the same app to transcribe other episodes on-demand and see the base-en model's quality)

[+] dsiroker|3 years ago|reply
I got OpenAI Whisper running locally on my Mac but the plumbing to make it NOT tax system resources (like CPU) and to get it to work with search isn't trivial. It's on our roadmap.
[+] jsf01|3 years ago|reply
The problem I have with this is that meetings and discussions—exactly the kind of thing you would want to recall—involve more parties than just yourself. But rewind appears designed to record everything in the background and be left on, not enabled manually when you want it. That means in every conversation you have you’re either going to need to get consent to record (which is super weird for 90% of quick chats) or just do it without consent which is creepy and probably illegal in a lot of places.
[+] zxienin|3 years ago|reply
> Mind-boggling compression

> ..We compress raw recording data up to 3,750x times..

Richard Hendricks should've run "Pied Piper" with this use case :-)

[+] mxuribe|3 years ago|reply
Well, if things don't work out in this use-case, there's always an opportunity to greatly evolve the tech industry with your compression. That resultant comprssion size sounds crazy amazing! Kudos to you and your team for your launch!
[+] ozozozd|3 years ago|reply
Great concept! Love the time machine inspired UI for rewinding. And super-curious about the compression. My guess is it's by saving diffs/incremental changes to the screenshots using Computer Vision.