[HN Gopher] The ReMarkable Streaming Tool v2: Elevating Remote W...
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The ReMarkable Streaming Tool v2: Elevating Remote Work Efficiency
Author : owulveryck
Score : 533 points
Date : 2023-08-20 05:41 UTC (17 hours ago)
(HTM) web link (blog.owulveryck.info)
(TXT) w3m dump (blog.owulveryck.info)
| Evidlo wrote:
| Did you ever look at only transmitting the changed regions of the
| framebuffer? You can really cut down on data rate that way:
| https://github.com/pl-semiotics/mxc_epdc_fb_damage
|
| Thats how the rM VNC project does it, but I prefer the UX of your
| app not needing any client side software.
| owulveryck wrote:
| The problem is that it requires some analysis on the device,
| and I really want the code to be the less intrusive as
| possible. I will have a look on how to do it in a cheap way
| zachallaun wrote:
| A naive approach that may still work well is to simply break
| up the image into fixed, predetermined regions. I don't
| believe this would be significantly more work for the server
| if it's already comparing pixel-by-pixel, and the average
| frame will probably contain updates only in one region. Even
| breaking it into 4 or 6 would, I think, be a significant
| payload reduction.
| ridruejo wrote:
| I wish something like this existed for the Amazon Scribe...
| j45 wrote:
| What have been the major pluses for you with the scribe?
| jimmySixDOF wrote:
| This a great article for the process even if you don't have a RM2
| so great hack to solve your own problem. I have been achieving
| something similar on my home PC setup using tldraw [1] which is a
| live multiplayer infinite canvas board service that I also join
| from a surface laptop with a stylus. I share that tab with others
| in a call from my PC and dump in its screen shots etc that I can
| markup from the surface tablet or anyone can join the tldraw
| session when it makes sense. Anyway its a web service not your
| own, you don't have the RE2 OCR and filing system or eink etc and
| there are a lot of other infinite canvas solution to choose from,
| but it's working and turned out to be simple enough for me to use
| more than once lol.
|
| [1] www.tldraw.com
| lima wrote:
| I'm using rmView for its red-dot-on-hover feature:
| https://github.com/bordaigorl/rmview
| sdflhasjd wrote:
| I suppose the author chose JPEG because that's easy to turn into
| MJPEG which is decoded for free (since you can just hand it off
| to something that supports it), but I suspect that contributes a
| lot towards the straining of the reMarkable CPU.
|
| However, JPEG is more suitable for photography but the graphics
| displayed on the reMarkable are more illustration-like and to top
| it off, it's monochrome. I think another common image format
| (such as PNG), or even a crude RLE compression would be lighter
| on the CPU.
| owulveryck wrote:
| Hello,
|
| You are right, this is indeed why I choose JPEG in the first
| place.
|
| But this is also why I chose a client/server apporach: the
| encoding was done on the client (my laptop) instead of the
| tablet. Threrefore the encoding did not impact the CPU. I made
| some profiling, most of the CPU was used by the transfer of the
| data over the wire. This is the reason of the compression.
|
| Now, the CPU footprint is low.
| sdflhasjd wrote:
| Oops, I misunderstood where the JPEG was being created and
| completely missed your own section on RLE. The resuling 200K
| per frame does still seem a bit high though, I'm sure that
| could be reduced further
| owulveryck wrote:
| I agree with you. It's all about trading memory for
| computation. If you have any idea, feel free to share it.
| Thanks for the comments
| CaveTech wrote:
| Without knowing how often your RLE is hitting the max
| length of 16, but assuming it was often, a further
| optimization could be using one bit as a flag and to
| signal that the following block is pixel is either a
| small sequence of 1-8 pixels, or a large sequence of a
| multiple of 8 pixels (ie. 1 = 8x1, 2 = 8x2, 3 = 8x3).
|
| This lets you compress up to 64 pixels into the space of
| no more than 2.
| owulveryck wrote:
| Sounds like a good idea
| idorosen wrote:
| Take a look at how mosh transfers deltas of terminal
| viewports over the wire using what it calls "SSP". That
| protocol might have some advantages here, especially
| since you can access the state of the pre-rasterization
| drawn objects, not just the pixels, on the screen.
|
| Once you do that, you may obviate the need for any
| transcoding or conversion to MJPEG since you can just
| redraw the objects on the canvas.
|
| Also, RM2 seems to have a built in Screen Share feature.
| Might be worth describing the differences (besides not
| needing their cloud subscription service).
| owulveryck wrote:
| I will try to answer to both points: In the first
| article, I described how I fetched the picture by reading
| the virtual framebuffer. I have not any knowledge of
| what's being drawn. All I have from the beginning is a
| 2.5Mb byte array.
|
| I don't use any jpeg compression anymore in this version
|
| And my understanding is that the native client is
| transmitting the vector representation to the client and
| the client redraws it with the same algorithm. It is only
| doable if you know what algorithm they use. I did a small
| test to decode their format, but it may change more often
| than the format of the picture.
|
| Does it provide you the answer? (thanks for the
| conversation)
| TuringTest wrote:
| Being nitpicky here, but the reMarkable is not monochrome, it's
| grayscale (with 16 gray levels iirc). It also has colour inks
| that will show in the companion app as blue or red for pens,
| yellow or green for highlighter. And the proprietary file
| format is keystroke-based, not bitmap.
| FredrikMeyer wrote:
| You can make your HTML canvas rendering faster by using typed
| arrays as described here
| https://hacks.mozilla.org/2011/12/faster-canvas-pixel-manipu...
| [deleted]
| owulveryck wrote:
| Oh thank you! I will have a look
| smusamashah wrote:
| Don't know if you are doing it but another common
| optimisation is to draw on canvas offscreen.
| https://developer.mozilla.org/en-
| US/docs/Web/API/OffscreenCa...
| owulveryck wrote:
| I will work on it when I have time. The offscreen looks
| like the perfect fit for me, to replace the hidden canvas.
| Many thanks
| jerryjerryjerry wrote:
| Wow, this is a very nice tool! Although I'm a ReMarkable2 user,
| I'm also curious about if this tool can be extended to support
| the newly launched Kindle Scribe.
| alanfranz wrote:
| This is a nice technical achievement, but I'm not sure I
| understand the difference between this and using a virtual
| whiteboard tool, ie FreeForm, Lucida Spark, Miro, Google
| Jamboard, and sharing it live in a meeting.
|
| What kind of context am I missing?
| owulveryck wrote:
| With this tool, I use a pen and write on the tablet as if I was
| writing on paper (with the same feeling).
|
| The main pro for whiteboard tool is the collaborative feature
| which I will never be able to do.
| Fluorescence wrote:
| As a project, neat work! But otherwise, it seems a rather
| self-centred tool and I don't think I would relish someone
| using it in a meeting with me. Feels like someone is making
| me watch them play with their toys and I would question the
| value. If it's just you drawing then something has gone wrong
| e.g. prepare and share material before a meeting.
| j45 wrote:
| I think it has value for being really simple and like a
| sheet of paper on a call.
|
| I used an iPad mini for a long while on zoom calls until I
| discovered something much better received - just use
| PowerPoint/Slides to draw boxes and text as needed
| together, the interface is familiar and people can pick up
| on it and move forward together.
| Terretta wrote:
| Plug for Excalidraw:
|
| https://excalidraw.com/
|
| https://blog.excalidraw.com/
|
| Which, FWIW, supports Apple Pencil and iPad quite well
| since 2022:
|
| https://twitter.com/excalidraw/status/1491044642493992960
|
| As well as a seemingly evergreen release of the Obsidian
| plugin that gets people Doge levels of Such Wow:
|
| https://www.reddit.com/r/ObsidianMD/comments/s58d2o/just_di
| s...
|
| Video walkthrough here:
|
| https://github.com/zsviczian/obsidian-excalidraw-plugin
|
| The team based real time collaboration in Excalidraw+ is
| just fantastic. Glad to have a way to compensate the
| author:
|
| https://blog.excalidraw.com/introducing-excalidraw-plus/
| esalman wrote:
| I can see this being useful in a system design
| brainstorming session with my colleagues, among other
| examples.
| alanfranz wrote:
| So, the point is the remarkable rather than the tool, and
| remarkable doesn't natively support other whiteboarding
| tools?
|
| (Sidenote: I'm using an iPad Pro with a Bellemond screen
| protector, and the paper-like feeling is very good)
| j45 wrote:
| I was shocked to learn I liked the iPad mini a lot, more
| than any of the bigger tablets.
|
| I think it's relative to your every day carry and every day
| use.
|
| Appreciate the recommendation on the screen protector.
|
| Having young kids wanting to touch a screen to interact
| with it might also be a plus for an eink device
| greatgib wrote:
| Nice tool. I like my remarkable2, I'm just so frustrated that it
| is not more open by design. It could do much more so easily
| Arainach wrote:
| Doing less is the core value prop of the device. It is
| intentionally not a full Android experience. If that's what you
| want, there are other competing devices.
| j45 wrote:
| Leaving it open to do what you want as a choice would be
| ideal rather than having it interpreted for you.
|
| It's a great device and could take away a great deal of
| scrolling or reading from other screens that are not as
| healthy to consume that on.
| appletrotter wrote:
| Not the OP, but I have similar feelings. I don't want a web
| browser or the ability check email - I just want decent two
| way sync with other cloud providers.
|
| The device doesn't feel open to me because it's difficult to
| move data out of their walled garden.,
| lee101 wrote:
| [dead]
| jegp wrote:
| If the goal is to share the visual contents of the pad, why not
| just stream the graphics over SSH?
|
| I recommend checking out reStream:
| https://github.com/rien/reStream/ Using nixos, sharing your
| screen is as simple as nix run nixpkgs#restream
| owulveryck wrote:
| I wanted something efficient (high framerate), but most of all,
| I wanted to use it without relaying on any third party tool.
|
| With this, from any device on the network, you can call the
| address of the remarkable and get the content.
| Loic wrote:
| An alternative I am very happy with is the SuperNote[0]. You can
| do screen mirroring and this is effectively really nice to
| quickly draw diagram during a meeting.
|
| The only inconvenient of the approach is that the SuperNote is
| starting a small webserver and you basically use Firefox to
| access it. It is very responsive as one would expect, but this
| means that you need to have your laptop/computer on the same
| network as the SuperNote. In a home office setup, this is not an
| issue, but at work, your company policy may prevent this.
|
| Anyway, be it RM2 or SuperNote, these tools are great for people
| who enjoy writing done ideas with pen and paper. The feeling is
| really different than doing it in an app or just text document.
| You can doodle in your notes :-)
|
| [0]: https://supernote.com/
| riedel wrote:
| Using a Onyx Boox Note and it also works great. They are even
| releasing updates after more than 5 years.
|
| (When buying , you have to ignore the GPL violations: it is
| completely Android and they are not releasing their OS sources)
| emptysongglass wrote:
| But they are violating the GPL or am I understanding this
| wrong? If they are, isn't that a bad actor folks here should
| probably strive to avoid?
| erinnh wrote:
| They are. They actively refuse to release the sources. And
| yeah they should be avoided.
|
| https://en.m.wikipedia.org/wiki/Onyx_Boox#GPL_Compliance
| tmpX7dMeXU wrote:
| If your principles are such that you won't buy a product
| due to a realistically immaterial instance of a GPL
| violation, sure. Given the number of GPL violations in
| the wild I refuse to believe that anyone but the most
| Stallman-esque among us are living to this standard.
| freeopinion wrote:
| Fair enough. Everybody can try to create their own
| community with their own rules. You seem to have decided
| that you prefer a community that doesn't adhere to
| licensing agreements. Don't be surprised if other
| communities exclude you.
|
| Edited for clarity
| otikik wrote:
| Eeehmm. I mean.
|
| I can understand not being ideologically aligned with
| Stallman and Co.
|
| I also agree that there must be lots of violations of the
| GPL out there. Software is often invisible.
|
| That said, I don't think there's many big companies out
| there openly doing it. If get caught, they comply with
| the minimum effort possible, but they comply. I don't see
| them being blatant or cavalier about it.
|
| Two main reasons for me to avoid them:
|
| 1. The attitude makes them untrustworthy. If they are
| blatantly violating this, what else are they willing to
| ignore? They have obligations towards me as a consumer,
| for example. Will they respect those? Will they sale my
| data to others?
|
| 2. There's no guarantee that they will continue being
| able to operate in my country. A judge could
| theoretically force them to close shop. So I'd rather not
| put my data on their product.
| erinnh wrote:
| I don't see how it's immaterial.
|
| Because they are not releasing sources, it's really hard
| to install alternative Android distributions on their
| devices.
|
| Last I looked (which was 1-2 years ago), there were no
| alternative firmware for their devices.
|
| Given the GPL violations in the wild, we should maybe try
| and not encourage them.
| smoldesu wrote:
| Imagine if we treated copy _right_ material like this.
|
| "You _bought_ tickets to Avatar 2? Given the number of
| pirated copies online, I _refuse_ to believe that anyone
| but the idiots among us are willing to pay for content. "
| danmur wrote:
| It's not immaterial, it's literally the point of the GPL.
| If they don't want to release their modifications they
| shouldn't take advantage of the huge effort that went
| into the linux kernel. Maybe use a different OS and
| license it..
| freetanga wrote:
| You are right. But I bought one knowingly and it works
| well.
|
| Microsoft has been a horrible, anti competitor company
| built on unethical values yet I chose their Office 365 in
| my company. Many here use their products and take a
| salary from such a company.
|
| Google has left the "don't be evil" in the dust, with
| anti competitive measures and short changing employees.
| Hardly ethical, yet widely used in this crowd, and many
| here choose to draw a salary from them.
|
| I hate the Castro brothers and what it does to Cuban
| people, but I do smoke a cigar now and then.
|
| I hate Nestle, but have a Nespresso.
|
| I hate Big Oil but drive an ICE as is only viable option.
|
| And so on.
|
| My point is both parts are right. Companies can un
| unethical or illegal things, we can stay away from their
| products out of principles, or cave in out of (a) having
| no principles or (b) being practical.
|
| In reality I think we all cave in a bit (even Stallman
| and co), so virtue signaling for choosing the hard path
| sometimes feels hypocrital.
| criddell wrote:
| There's a lot of people here that are opposed to IP
| restrictions/protections of any kind.
| innocenat wrote:
| If you could, yes. Unfortunately Onyx Boox offers one of a
| kind products which its competitors don't really come
| close.
| freeopinion wrote:
| Is it one of a kind? Or does it have competitors? If the
| only way you can compete is by breaking the rules... why
| would anybody want to play with you?
| [deleted]
| jsheard wrote:
| What makes the Boox tablets unique isn't their Linux
| kernel, it's their customizations to Android to make the
| UI more usable on a slow e-Ink display. They could
| release their kernel sources to comply with the GPL and
| still keep their Android skin to themselves, just like
| every other Android device manufacturer does.
| [deleted]
| idonotknowwhy wrote:
| Remarkable 2 ftw
| danShumway wrote:
| > Unfortunately Onyx Boox offers one of a kind products
| which its competitors don't really come close.
|
| I wonder if absent the Linux kernel they be capable of
| offering a one of a kind product? It would be more
| accurate here to say that if they could keep their code
| proprietary that would be nice for them, but
| unfortunately the _Linux kernel_ offers them a one of a
| kind base to build a product on and so they need to take
| the compromise and release their modifications as GPL if
| they want to be able to build a good product.
| shadowfiend wrote:
| That feels like the start of talking past each other here
| heh. GP is making a values statement. If a good product
| gets to be exempt from the values in someone's value
| system, then any product is.
|
| More likely here following the law in this instance isn't
| part of your value system, and neither is free/libre
| software being used on its authors' terms, so you are
| (internally) free to decide to buy something even if it
| doesn't adhere to the GPL. If I'm right about that,
| adherence to these things is a (maybe very-)nice-to-have
| rather than a core value, whereas the GP I think is
| coming from a place where one of those is a core value.
| danShumway wrote:
| Their whole handling of the situation suggests that the
| company doesn't care about any regulation and they're just as
| likely to lie or refuse to comply with other legal
| requirements for their products. When asked about source code
| they actually said, "well, the US is anti-China, so we don't
| think we should have to."
|
| That just doesn't make me feel confident about their
| products. If something goes wrong is there going to be
| customer support, or are they going to decide one day that I
| don't get that because I live in the US? If I order an Onyx
| Boox can I trust it will even be the same hardware as someone
| else gets or are they going to treat labeling requirements as
| optional as well?
|
| People get bent out of shape about TikTok, but TikTok has
| never said, "we don't think we should have to obey legal
| requirements because we're mad at you." And it's so
| transparently just an excuse for them to do what they want,
| their anger about anti-China sentiment in the US is not
| preventing from selling to the US. Convenient that it only
| prevents them from obeying legal requirements. I don't see
| how I could trust a company with these kinds of business
| practices, they're advertising to me that the moment it's in
| their best interest they'll break the law and throw me under
| the bus.
| ekianjo wrote:
| Thanks for sharing! How does the writing experience on the
| supernote compares to the RM2?
| MrJohz wrote:
| I'm not the person you're replying to, and I've not compared
| them myself directly, but I've heard a few people describe it
| as the difference between writing with pen (Supernote) and
| writing with pencil (RM2). At least on the Supernote side,
| that matches with my experience - it's fairly smooth, but it
| does feel like you're writing on paper rather than, say, a
| glass screen.
|
| There is almost no noticeable lag while writing, and even
| while doing more complicated things like scrolling through my
| Kindle list, or resizing a block of writing, the screen keeps
| up very well.
|
| Purely from my perspective, I find the smaller screen size
| (roughly A5 dimensions) of my Supernote a lot nicer than the
| more A4-proportioned Remarkable, but that's just a preference
| thing - I like writing in smaller notebooks in general. You
| can also get the Supernote in a size closer to the Remarkable
| if that's more what you want though.
| phpisthebest wrote:
| Having used both the best description would be the Supernote
| a5x is like writing with a rollerball pen, where the
| Remarkable is like writing with a pencil.
|
| Both are good, fluid, responsive, but slightly different
| owulveryck wrote:
| I did not face the "being on the same network" problem yet. But
| I already know that implementing a native Ngrok feature is
| straightforward and a couple minute work. It would allow to
| stream over internet.
| gloosx wrote:
| i don't understand: how does this server goes around NAT? Is it
| really suitable for overseas remote work or it is only local and
| you have to stream your screen itself via proper webrtc system?
| tanepiper wrote:
| Very nice - I have a ReMarkable, but haven't used it as much as
| I'd have hoped but might give this a try.
| weekay wrote:
| Excellent write up. This is the kind of content that I love to
| see here. Great to see how chatgpt helped you along the way to
| learn and solve a problem you weren't very well versed with.
| Resonate with the comment that you were the developer and chatgpt
| was the coder ! Exactly how I felt with some of the projects.
| Also indeed true that Simplicity is indeed complex .
| idorosen wrote:
| How does this tool compare to the built-in streaming (screen
| share) feature?
| owulveryck wrote:
| The main difference is that you don't need any client
| installation now. You simply type the address of the remarkable
| in the browser to get the content.
| movedx wrote:
| I was just thinking: it can already do this. I find the screen
| sharing just fine, and even use it on live streams.
| dxdm wrote:
| You need to have their desktop app installed to use the built-
| in, and AFAIK there is no Linux version of it.
|
| https://support.remarkable.com/s/article/Screen-Share
|
| The solution in TFA seems to work on Linux, if you have a
| capable browser.
| intothemild wrote:
| I had it working fine in Linux with Wine.
| captn3m0 wrote:
| The app is still wonky for me, I always preferred using
| reStream. And it doesn't support ARM.
| [deleted]
| owulveryck wrote:
| Greetings HN community! I'm excited to share the latest iteration
| of my reMarkable streaming tool, designed to enhance remote work
| productivity. In 2021, I developed a tool that enabled me to
| stream content from my reMarkable tablet to my laptop, making it
| an invaluable asset during virtual meetings and presentations.
|
| My newly published article delves into the details of this
| revamped version, discussing its architecture, components, and
| the iterative journey of improving user experience. As a product
| manager, I gained unique insights into user perspectives, which
| drove me to simplify the tool's activation process.
|
| This article is a deep dive into the technical aspects of the
| tool, exploring how I eliminated the need for a local service and
| optimized network consumption. If you're curious about DIY tech
| solutions, optimizing remote work setups, or simply exploring
| innovative projects, I invite you to explore the article.
| sireat wrote:
| Looks like awesome project!
|
| EDIT: Ctrl-C and restart with ./goMarkableStream got it working
| more or less. Saving the below message if it helps anyone else
|
| EDIT2: Awesome when it works - but getting quite a bit of
| spotty service. Still frequent `waiting for reMarkable screen`
| . SSH is showing everything normal, except for occasional:
| 2023/08/20 14:48:16 read /dev/input/event2: file already closed
| 2023/08/20 14:48:16 read /dev/input/event1: file already closed
|
| I upgraded my reMarkable2 to 3.5.2.1807 (from ancient 2
| something version)
|
| Unfortunately I am getting waiting for reMarkable screen after
| installation.
|
| That is nothing is happening when I draw on reMarkable2 - in
| notebook, in sheets, on book.
|
| On inspection ReMarkable2 is certainly serving html with canvas
| element
|
| Both https://192.168.8.143:2001/ and https://10.11.99.1:2001/
| work (after accepting unsafe SSH cert which is normal) and are
| serving html.
|
| Tried on Chrome, Firefox, Brave
|
| I installed it per github instructions.
|
| From Windows via PuTTY through 10.11.99.1
|
| EDIT3: Looks like limitation is one browser (and one IP
| address) per stream - normal considering the usage :). Still
| sometimes no matter what address and browser I try I get
| `waiting for reMarkable screen`
|
| EDIT4: tried `nohup ./goMarkableStream &`, closed PuTTY and
| restarted client computer - all browsers giving `waiting for
| reMarkable screen`
|
| How would I restart the stream? Inspecting
| https://10.11.99.1:2001/stream gives `too many requests`
| response.
| owulveryck wrote:
| Regarding Edit 3: Yes it is a feature not a bug. I don't want
| to stream to several browsers at once.
| sireat wrote:
| Agreed that is completely reasonable. One stream is
| sufficient.
|
| Unfortunately per EDIT4, it looks like it is not possible
| to leave this service running on reMarkable2 until the next
| time.
|
| Any way to reset without going into SSH again?
|
| EDIT: looks like enabling USB on reMarkable2 got the stream
| working. Curious though why did the web server work at all
| then (possibly sharing of common wi-fi?)
|
| FINAL_EDIT: I give up, there is no sense to this madness.
| Suddenly the stream starts working on same same
| https://10.11.99.1:2001/ where it was giving `waiting for
| reMarkable` canvas for last 15 minutes.
|
| Possibly there is some sort of timeout for the old stream?
| owulveryck wrote:
| There is a timeout of one hour (after an hour you need to
| refresh the tab). Adding a & at the end does not help to
| make it run until next time? Do not hesitate to open an
| issue on GitHub.
|
| Thank you
| sireat wrote:
| Thank you once again!
|
| It seems the timeout is about 15-20minutes (when a new
| tab or new browser starts working).
|
| Adding & did work, I was able to go to a different
| computer attach USB cable and have
| https://10.11.99.1:2001/ work (without SSHing and
| restarting goMarkableStream).
|
| I
| timoteostewart wrote:
| Engaging and informative write-up. Thanks!
| d__a__n___g wrote:
| [flagged]
| j45 wrote:
| Agreed from the majority who is just upvoting and bordering
| on a comment to say thanks.
|
| To the flagged comment, HN isn't littered with many thanks
| comments per article, a few ways to thank go a long way.
| natsucks wrote:
| As a reMarkable owner, I love it. I want it. gimme gimme gimme.
| danShumway wrote:
| Thanks for not only building the tool but also releasing such a
| great technical writeup. This is a wonderful blogpost.
| Knee_Pain wrote:
| Would it be possible to implement this via USB connection?
| owulveryck wrote:
| It already works via USB if you activate the sharing option
| and connect via the 10.x.x.x address
| flarg wrote:
| The sorely missed Kent Boogie Board did this out of the box and
| it worked really well!
| mmastrac wrote:
| I love remarkable, and I wish they would focus on features like
| this rather than the subscription that I don't ever plan on
| paying for.
| [deleted]
| wodenokoto wrote:
| On one hand I really like the no-distractions philosophy of the
| remarkable, but on the other hand it is just missing that one app
| that I want.
|
| Great to see people work around it. I assume this web app would
| also work for streaming other devices.
| dxdm wrote:
| > My initial approach was to compile the client into WASM. This
| seemed promising as it would let me leverage my expertise in Go
| development. However, I encountered several limitations that
| would have necessitated substantial modifications.
|
| I'd be interested to read more about this.
| owulveryck wrote:
| Hello,
|
| In a glimpse:
|
| The main issue was with the gRPC library. The support is very
| limited by now. Then the JPEG compression is slow in Go and it
| is CPU intensive. And finally, I even if I could generate the
| Mjpeg stream, how would I display it?
|
| Then I though about the "canvas" mechanism, but I could not
| address the backend of the canvas without heavy copying between
| wasm and JS. And remember the size was 2.5Mb.
|
| Anyway, I though that relying on wasm would make me implement a
| lot of image primitives that are natively accessible in JS (for
| example image rotation).
|
| Hope that answers your question.
| dxdm wrote:
| I haven't really looked into wasm yet, and am wondering what
| constraints one might run up against for interesting
| practical applications like yours.
|
| You satisfied my curiosity at the perfect level of detail,
| thank you very much for taking the time!
| KeplerBoy wrote:
| The same can be achieved on Android (eInk-) Tablets using scrcpy.
|
| Surprisingly fun for combined with a boox note.
| stedaniels wrote:
| This is very cool, and I _really_ want to love the ReMarkable 2,
| but it's stance on being an insecure device [0] makes this
| difficult.
|
| [0] https://support.remarkable.com/s/article/Does-reMarkable-
| off...
| NhanH wrote:
| For anyone who didn't click on that link: this is about the
| device having the same physical security as the thing it want
| to replace (paper). That is if someone has access to it, they
| can read it.
|
| It is not about the device having some known software
| vulnerabilities in the usual sense when we hear about network-
| connected insecure device
| pbhjpbhj wrote:
| Surely it replaces a briefcase, or a filing cabinet, that
| stores lots of documents/files/folders. Those things have
| locks.
| xiwenc wrote:
| Lack of full device encryption is also a no-go for me.
|
| I can't imagine loosing such device that contains
| confidential data.
|
| The difference between this and a piece of paper is that this
| could contain your whole stack/library. Not just a single
| piece of paper note.
| HL33tibCe7 wrote:
| Also someone is way more likely to steal some iPad-looking
| thing than a paper notebook
| [deleted]
| ekianjo wrote:
| The software is also very limited as it is... too bad they dont
| make it possible for a marketplace or extensions to exist
| officially on the device...
| [deleted]
| IshKebab wrote:
| Do any ebooks offer full disk encryption?
| yunohn wrote:
| Remarkable is meant to hold all your notes, books, any such
| textual data. Ebooks are only one small part of its intended
| usage.
| IshKebab wrote:
| I know. The question stands.
| pests wrote:
| I don't think so.
|
| What does a book e-reader have to do with the ReMarkable
| though? Why does that question still matter?
| captn3m0 wrote:
| Unofficial gocryptfs based home directory encryption is
| available; https://github.com/RedTeamPentesting/remarkable-
| encryption
| joe_the_user wrote:
| Also,
|
| The context is ReMarkable has a sharing service that costs
| $2.99/month. And subscription software is generally noxious but
| subscriptions more or less necessary for a device especially so.
|
| https://remarkable.com/store/connect
| j45 wrote:
| I'd happily pay a one time fee to self host relative to the LTV
| of subscribers.
| varispeed wrote:
| I don't know how people can justify using ReMarkable for work?
| Device is not encrypted, so it is a huge security risk.
|
| The company seems to be not interested in adding encryption, so
| this is just a toy.
| AshamedCaptain wrote:
| Encryption is not what would make this device secure. Avoiding
| the cloud and treating it like a notebook is.
| varispeed wrote:
| Nothing wrong with the cloud if data was encrypted at rest.
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