Dope Tech Episode 2

<<@ExplainingComputers says : As some people have noted below, in the word cloud "bz2" appears incorrectly as "b2z". But all is correct in the BZip 2 section at 7:11. And I have corrected the thumbnail. Also note that GZip compressed TAR files have the extensions tgz or tar.gz, not tar.tgz, as noted in the third bullet point around 7:53. My apologies. This video was checked, corrected and re-rendered many times . . . but at the moment, things like this are slipping through. :(>> <<@20thCB says : Didn't know Jarvis Cocker was also a computer scientist!>> <<@dngleberry says : I 100% agree, if you're going to buy one of the archiving applications then let it be RAR. I did it and haven't regretted it since. I paid once and multiple version upgrades and an OS switch (From windows back to Linux) later the same license still works. 10/10, well worth the purchase. Oh, also! One of the things about RAR you forgot to mention is the ability to break larger files into smaller, more manageable chunks. While they're not the only ones doing it now, I think they were the first or one of the first to do it.>> <<@HuskieBeats says : You're lit cuz keep it up>> <<@charge.in.motion says : 4:11 Android also support zip compression and decompression.>> <<@grahamjones7070 says : Can you solve a problem I've got. I shoot video in 4k 30 and edit my footage through Capcut editing suite.I then export my piece of footage through the same Capcut. But if that footage is 4GB or more i can't transfer it to my memory stick to watch on my TV/Projector. So i have to import it into Clipchamp which is a Windows owned editing suite. Then export it in 720p quality. It compresses the file to under the 4G to go on the memory stick. But in some cases it still won't go on there. Says unsupported file. Is there another way to solve this. Is there a storage device I can transfer my videos too and then link up to my TV or projector. Just picking your brain about this. Thanks.>> <<@incognito_AH says : Nice but why does this feel like a 2011 video>> <<@HenryNugraha says : I feel like playing a video game and listening a tutorial from an npc. Great explanation!>> <<@FraserChapman says : @14:29 - Great video - just re "online transfer speed" and compression. Compression hasn't become less critical, it's just become invisible. Technologies like gzip, Brotli, etc are routinely used automatically between servers and browsers for almost every site you visit, so it's happening more than ever. It just the entire compression and decompression cycle happens in a fraction of a second, completely transparent the user.>> <<@mrh829 says : One of the most irritating things about the built-in ZIP functionality in Windows is how it deals with password-protected files. Whether or not you can extract a ZIP archive depends on the specific type of encryption used. Using the older "ZipCrypto" encryption, it will work fine. But, if the file is encrypted with something newer/more secure (like AES256), the Windows tool will fail--and it won't tell you that it's an incompatible file, it will instead tell you that you entered the wrong password! This, of course, can lead to a lot of confusion, with you thinking you have a corrupted ZIP archive, even though it's just fine. The other really irritating thing with the Windows tool is that on machines that have MIcrosoft's "enhanced security" turned on, any ZIP files downloaded from the Internet or copied off a network share are marked as "blocked" unless you go into the file properties and unblock it. If you extract the ZIP archive while the file is in the "blocked" state, it will still extract everything, but it will change the "last modified" date on every file to be the date and time you extracted it, as opposed to keeping the original modification date stored in the zip archive (and I really do not understand how this behavior could possibly aid system security in any way). Simply using a better compression tool, like 7-Zip, solves both of these problems.>> <<@MrPJunior12 says : heh, ur intro music thing is so bad and u r such an old nerd, and all your pauses between sections, oh god, so cringe. nevertheless, the content u make is top notch, its so good and interesting, love everything u do.>> <<@Auroral_Anomaly says : Decompression bomb go brrrrr…>> <<@nosuchthing8 says : Excellent video as always. One minor thing, to spice it up you could have dug deeper into the life and death of the dude involved with pkzip. Straight out of game of thrones.>> <<@-kekmacska-48 says : 8:59 *unless you use paq8 or zpaq8. That can even utilize modern processors 100℅>> <<@-kekmacska-48 says : zz, rz, xz, pva adt are my favorites. they can compress up to almost 50% efficiency which is crazy>> <<@neoaldus says : One key factor that you missed in your video presentation is the ability to recover the content of a damaged or corrupted archive. The main reason I prefer WinRar is the possibility to add recovery records to an archive (3% by default, but configurable by the user). I only found one more piece of software capable of doing this, but it was old, kinda buggy and unmaintained. Until 7-Zip (your main recommendation) will add something similar, I will not even consider it. What's the point of making an archive that could no longer be read later because of bit rot, transfer errors, faulty CD/HDD sectors and so on?>> <<@marksc111 says : 10:17 WinZip is also available for macOS, although hardly anyone seems too use it.>> <<@Busto says : Hahaha!!! EC is funnier than I thought!😂 Nobody pays for WinZip & WinRar!!!🤣🤣🤣>> <<@as.september1996 says : How to extract a ".car" file?>> <<@peterc4082 says : ARJ format was left out!>> <<@simrikinnos says : Dear king,,, you could have billions of subscribers but only hindered by the short term joke monkeys. 1000% respect...>> <<@TurboLoveTrain says : ...Great video. I had to learn compression in analog systems. It's also pretty amazing how similar multiplexing often looks to compression. I still send people uncompressed Bitmaps just to see if anyone notices... they usually don't.>> <<@DopeXen says : 6:43>> <<@genericelaf1007 says : Really love the style of this man.!!>> <<@dannyboots says : Zip, 7z, and RAR I use all the time>> <<@spoidermon6185 says : WinUHA should have been mentioned>> <<@desiredditor says : 7zip is the best app>> <<@k4piii says : Sorry about this ,but your voice is perfect to sleep>> <<@lucasmoratoaraujo8433 says : I love this guy! And this hairstyle is not easiest one to pull off, but does it nonetheless. Thanks for sharing you knowledge with the world! ❤>> <<@VíctorGauto says : Great explanation, thanks!>> <<@sebastjansslavitis3898 says : mostly useless thing nowadays, the biggest files are pictures and videos and they don't compress. it works great on text files, but I don't know how much text you need to worry about space... maybe if you own a library :D password protection and archiving is only thing that matters>> <<@JfromUK_ says : Great video! I knew some of this but it filled in a lot, and was so complete, well paced and expertly put together. Big 👍🏻 from me, as a newbie to your channel 😊>> <<@americanswan says : I'm conflicted. I love RAR. It offers great features. But I genuinely don't have much need for compressing anything.>> <<@IamTheHolypumpkin says : Sometimes file compression can achieve amazing results. With xz. I was able to compress a diskimage from 20 GiB to about 2 GiB.>> <<@nico3534 says : this one of the craziest intro tracks iv ever heard>> <<@elblanco5 says : I install the free 7-zip on windows almost as soon as the updates for the OS finish. It's great, supports a ton of formats, it's free and source is available. There's also version for Linux and MacOS.>> <<@xeridea says : Compression is still used commonly on the internet. Generally web pages compress the HTML, CSS, JS, etc files on the fly to the browser (using fast compression option), as it still generally saves time loading, and is useful for your phone on mobile data, and those still on DSL. It was a huge deal in the 80s though, connecting to BBSs over slow dialup, compression was a godsend.>> <<@Jeroen74 says : No ARJ 😢>> <<@SegNode says : I almost clicked off the video at the beginning since the intro was a little slow and boring, but I'm glad I stayed around because the rest of the video held my attention well and was very informative 😊. Thank you for making it.>> <<@ShadowKestrel says : one curious strength of gzip is that both compression and decompression support streams, whereas most formats require entire files at a time. This is especially useful for sending lots of data over networks>> <<@adv_josh says : Comparing xz vs 7zip is just comparing your settings since they use the same format.>> <<@adv_josh says : its a mistake to suggest reliance on password protected zip files. The method used in pkzip is defeatable in fractions of a second. The method used in winzip is better, but as winzip (into zip really) has been unmaintained for 20 years, it too is defeatable in a short timescale, likely hours even with a good password on a single machine.>> <<@jamesmnguyen says : My favorite thing about data compression is that the resulting data is generally more random looking. Or to put it another way, pure random data cannot be compressed.>> <<@lidarman2 says : We did a clever trick at work for 8 bit lidar data compression. We take a chunk of data which in this case is a set of successive time series values, load them in a 2D array and save as a PNG file. This reduces the data storage size losslessly but also allows one to look at the thumbnails and visualize the data when browsing the data set.>> <<@feynstein1004 says : 4:55 You say that like it's a bad thing 😁>> <<@encephlopedia19x1 says : This video is painful to listen to to my American ears.>> <<@El-Ge says : For so many years I am using 7z for it is free>> <<@pierrekilgoretrout3143 says : thank you, interesting summary! You confirmed my choice of 7zip for compactness, and zip for openness (my partners can open without additional sw) If everybody is using windows I can also create a self-extractive 7z archive password protected, however not everybody will trust an exe!>> <<@gosnooky says : Compression is more prevalent than most people realize. Nearly every request through the web for text-based files (HTML, CSS, JSON, JavaScript, Plain text) is gzip (or Brotli) compressed on the server and decompressed automatically by the browser. It can save tons of money when using cloud-based services where bandwidth usage is metered, or on people's metered data connections on mobile. The system I work on needs to send tens of megabytes of text-like files every second from one server to many mirrored (load-balanced) smaller cloud nodes, so everything is compressed. Our AWS bill for this particular service would be 15x higher without compression. It's also good for the planet - smaller files, less network attenuation, less power usage.>> <<@SirKerzenhalter01 says : Win.RAR and its never ending trial And we love it>>