Відео

Hello and thank you very much for your comment! Glad you like my videos! I've been too busy with work to make videos recently, but in the meantime, feel free to check out the channel to see if there's anything else you like!

Hello and thank you for your comment! This depends on both the physical layout of your keyboard and they keyboard language you have set on your computer. There are many possible answers, here are some of them: www.quora.com/How-do-I-get-a-pound-sign-on-a-keyboard

Thank you very much! I remember your comment on another one of my videos as well, glad to know you like my work =)

You're welcome! Glad you liked the video :)

You're welcome! Very happy to be of help =)

That's great to hear! All the best for your CS journey =)

Hello and thank you very much for your comment! Yes, colors are a really powerful way to create visual separation and groupings between things, and I find myself using it a lot to subtly convey certain ideas. Glad it worked well for you!

Thank you! Glad you liked the video :)

Hello and thank you for your comment! Yes it does. You can create multiple HTML pages and navigate between them as per normal. Just ensure that each page includes the eel.js script. There was a bug back then that may cause the backend to shut down if you navigate between pages too quickly, but in my recent use this didn't crop up anymore so I'm inclined to say it's probably been fixed.

Hello and thank you so much for your comment! I'm glad you think so, I poured my heart into this one so this was good to hear!

In Singapore at Toys R Us, in 2018!

@@NERDfirst In US dollars? That's crazy.

Singapore dollars. Converts to about US$73 in today's rates. (I should have included the rates back then in the video)

@@NERDfirst OK. Thanks. Why can't they make the writing brighter on these LED gadgets?

From a technical perspective, all LCD does is to selectively block a rear layer of material, which can be a luminous color like green, to reflect as much light from the environment back to your eyes. Traditional displays even used mirrors to achieve this. But ultimately, without an active backlight, your writing can only look as bright as the light reflected from the environment. It's a limitation of the technology, especially since the low-power nature of such boards is a major selling point.

Hello and thank you very much for your comment! Glad you like my work! If there's anything you haven't completely understood, feel free to let me know and I'll try to explain it further for you.

Hello and thank you very much for your comment! Glad you liked the video :)

Hello and thank you very much for your comment! Honestly this stuff isn't my strong suit since my background is in Computer Science, but I'll see what I can do! Many of these topics are really interesting!

You're welcome! Very happy to be of help :)

Hello and thank you for your comment! Yeah, I'd love to, this is a topic I enjoy. Got any specific topics you'd like to see?

Hello and thank you for your comment! I think for storage and synthesis, this is certainly possible. However, I think this might be difficult when it comes to capture - Ultimately, all you could do is to take measurements of a signal at a fixed interval, and at that point you already run into aliasing concerns.

You're welcome! Very happy to be of help =)

Heh, at least you found it, so the next time you need it, you know what to do!

You're welcome! Happy to be of help :)

You're welcome! Glad to be of help :)

Hello and thank you for your comment! In my initial draft for this video, I did have framerate operations, but I scrapped it after it turned out to be less trivial than what it seems on the surface - Changing the framerate inherently affects speed, so if you just reduced the framerate for example, FFMPEG compensates by dropping frames, which isn't all that intuitive to me. I ended up covering speed and framerate changes with the SetPTS filter a long time later, in this video: ua-cam.com/video/ckCuy7dmyPI/v-deo.html

Hello and thank you very much for your comment! Glad you like my work =) If I'm understanding you correctly, what you'd like is to perform video conversion in the background in a way that won't tie up your CPU completely, so that you can continue to use your computer while the conversion is in progress? First thing to bear in mind is that FFMPEG will try to use up as much resources as it needs to, which means that switching to FFMPEG and processing one file at a time might still not be enough for your computer to be freed up enough to do other tasks while the conversion is running. This really depends on where the bottleneck in the process is (eg. If you're using a slower hard disk, the CPU may be largely idle while waiting for file reads and writes). To run a number of FFMPEG conversions sequentially in a batch, you can use the forfiles command. I've made a video on this before and is what I use if I want to convert multiple videos using FFMPEG: ua-cam.com/video/1mTFYyfYBS4/v-deo.html I am not familiar with any tool that can defer processing until a later time. Technically the command line has commands like sleep that you can use, or you can use the Windows task scheduler, but both of these don't really feel like great solutions in this context. I think a good starting solution to test out will be to use forfiles and process your videos sequentially, and see if it helps. If you really need to, you can also consider limiting FFMPEG to less threads, so other cores on your CPU remain free for other tasks. There's discussion on how to do this here: superuser.com/questions/792525/how-to-change-ffmpeg-threads-settings

@@NERDfirst I'm so impressed with your lengthy and thoughtful response to my question. I appreciate your time. I'll look into your ideas as I have a backlog of about 20 videos I need to convert. I'll test a few. I use task scheduler and as I use a program interface and not the direct cmd line to convert my files, I'll try that! My hard drive is a 2tb SSD so drive speed should not be a problem. Again, I 'll watch your suggested youtubes and thanks again for the help.

No problem at all! Your use case is interesting and it gave me a chance to learn something new as well. All the best, hope you can find a solution that works well!

You're welcome! Very happy to be of help :)

Hello and thank you for your comment! Typically on Windows, quotation marks worked for me, eg. ffmpeg -i input.mp4 "output video.mp4"

@@NERDfirst i meant with the forfiles command, eg. forfiles /c "cmd /c ren @file "new name.@ext"" (this returns an error)

I apologize, when I first saw your comment I thought this was on my other video about the FFMPEG command line application. I did a bit of digging and I was surprised to find that you might have run into a limitation of forfiles, and so what you want to do might actually be impossible. The reason is that forfiles always introduces quotation marks around the parameters (you can try a simple `forfiles /c "cmd /c echo @fname"` and you'll see that in action). If you introduce your own quotation marks, they clash since they're interpreted as a doubling up of quotation marks.

@@NERDfirst right, i figured. oh well, thanks for the help! :3

Hello and thank you for your comment! Yes, I wasn't confident enough for that which is why I didn't broach those topics. Maybe one day!

Hello and thank you for your comment! There's no such thing as "best" really. It all depends on what tradeoffs you're willing to put up with. For astrophotography, if you're stacking exposures and want a brighter overall image at the expense of more noise, "addition" might be a good choice. If you want to average out the effects of noise across multiple shots, you can also consider the Normal blending mode, playing with the opacity to get the effect you want.

@@NERDfirst Yes I am stacking between three and six images with each one being red, green, blue, if I have more than three then I have red, green, blue yellow. So all my images are a single color and then I just blend them together. So you feel that addition would be a good fit for that method?

Yes that sounds good. If each of your images are already RGB (in that, for example, the red image has the red channel populated while the other two are completely black), then using addition will even restore full color information. For combining your RGBY images, you'll have to play around with the opacities of the channels to make it look right since R+G=Y so there might be some overlap of color information.

@@NERDfirst perfect thank you. This is all new to me so i am trying to figure it all out haha

You're welcome! I'm glad to be of help. The good news is, there really aren't any right or wrong answers. Once you've figured out the basics, the rest is about experimentation and making your art look the way you want it to! All the best with your astrophotography work :)

Hello and thank you very much for your comment! Glad you liked the video =)

1. Do you mean to look at the address of the pointer variable (not its target, but its own address)? If yes, then you can. I briefly discuss this at 6:55. 2. Yes, they're not the same, but only because you said "string". In C, a string is a sequence of characters, where an address looks more like an int or a long. What this means is, you could technically take an int that represents a valid memory address, cast it to a pointer type, and then use it to access a memory location. This is not common practice and comes with many caveats and risks, but it _is_ something that is technically possible.

Hello and thank you for your comment! Variable names are really just an abstraction for memory addresses, making it easier for us to understand the code. By the time the program is compiled into machine code, the variable names are substituted with memory addresses, and they disappear. The low-level instructions generated for the CPU only manipulate memory addresses, registers, and other low-level constructs.

Hello and thank you for your comment! These are fair points, I'll do what I can to clarify! I'm not sure that my animation shows that there's noise on the wire - It shows an electrical connection between the pin and ground. The kind of random noise we experience when the pin is floating comes from sources like electromagnetic induction. These are typically very low energy signals and therefore, the current generated is miniscule. When a voltage source is connected, the current generated is significantly higher. It "overwhelms" the noise by being the higher-energy source, exerting a greater "force" on the electrons in the conductor. When we pull down to ground, all the stray currents have a low resistance path to ground, so they "drain" that way instead of registering on the microcontroller's pin. We can use the same line of reasoning to understand why the closed switch overrides the pull-down resistor. There are two paths for the current to flow - Through the resistor to ground, or through the microcontroller pin, which has next to no resistance. Hence, most of the current flows to the pin, allowing it to register the voltage. That's what I mean by "overwhelming" the path to ground. Let me know if this makes things clearer or if you need further clarification!

You're welcome! Very happy to be of help =)

Hello and thank you for your comment! I'm afraid I don't know enough about your use case to properly advise. The best I can do is to refer you to the Limit Switch page of the GRBL documentation here, I see that resistor values are given: github.com/gnea/grbl/wiki/Wiring-Limit-Switches

Thank you, that helped alot 👍And Thank you for the great video.

Hello and thank you for your comment! I hope this is not in reference to me, as this was an original work, though I would admit, not particularly groundbreaking.

You're welcome! Yeah, it's not a feature everyone needs, but if you do, it's definitely great to pay attention to.

You're welcome! Glad to be of help :)

Hello and thank you very much for your comment! Glad you liked the video =)

Hello and thank you for your comment! Do you mean that you want to stop the greenscreen effect before the video ends? If so, you probably can use timeline editing features (discussion starting at 9:06) - The "enable" option discussed might be useful.

You're welcome! Very happy to be of help :)

Hello and thank you very much for your comment! Glad you're liking my work so far :)

Hello and thank you for your comment! We typically only include one i-frame in each group of pictures (so don't end on an "I"). Other than that, both are valid ways to do GOP.

You're welcome! Very happy to be of help =)

You're welcome! Very happy to be of help =)

Christ 10 years ago... wow

Hello and thank you very much for your comment! Yeah this is from a loooong time ago, but at least I'm still here, lurking in the comments. Any specific topics you're interested in? I'll see what I can do.

You're welcome! Very happy to be of help =)

Hello and thank you very much for your comment! Thanks for hanging around and checking out my videos, glad they were useful for you =)

You're welcome! Glad to be of help :)

Hello and thank you very much for your comment! Glad you liked my work :)

@@NERDfirst I've then watched your other video about advanced filters, great too ! I knew the basics already, but it's always interesting to check how other people explain things, there's always something to learn you either didn't know or didn't use properly. I had no idea about the difference using '-ss' before '-i' vs after ! :) Thanks, your videos are very understandable and I like the effort with the animation/graphics you put in them ! Cheers

Thank you again! Yes, that clarity is exactly what I'm aiming for so I'm glad I was able to achieve it.

You're welcome! Glad to be of help :)

Thank you! Glad you liked the video :)