C++ & Qt

27 February 2026 10:05

What is qt, can anyone explain in detail?

C++ & Qt

25 February 2026 22:23

@Ilya_6483 [8547462020] warned (2 of 2).
• Action: Banned 🚷

C++ & Qt

25 February 2026 20:35

the sender is an 4th 5th raspberry or jetson orin nano

C++ & Qt

25 February 2026 20:28

thanks for valuable advice!

C++ & Qt

25 February 2026 20:22

may be you think this is neglible, but maintainance cost is also better that way. you can enchant your lib with the update of other module

C++ & Qt

25 February 2026 20:14

just my advice 🎉. I dont have experience, just some observation of possible steps

C++ & Qt

25 February 2026 20:12

another more concrete example : obs studio — twitch

C++ & Qt

25 February 2026 15:06

hello guys! long time no see!

so i am developing a bit of realtime video streaming client. the rtp and encoding are already handled by the uvgrtp and libav

i have other implementation that is based entirely on gstreamer pipeline (gst.h), that is a lot of a heck easier


i want to show the raw frame buffer (packed rgb or planar yuv 4:2:0) to the user efficiently. i have implemented the qpixmap label thing but it involves a lot of data duplication and in general does not seem professional to me. i am planning to use the opengl widgets integration so my question is: is there some ready-to-use reatime-video-display widgets to put pixels on the screen efficiently from memory?

i tried to investigate the docs qvideowidget thing but i was not able to understand how to pass my own raw data pointer to qvideoframe.

maybe someone have done something simmiral in qt already and could provide some directions?

C++ & Qt

23 February 2026 18:15

But yes - when you're learning these, writing test programs that use the STL algorithms available - benchmarking them to see how they work does help a lot to understand.

C++ & Qt

23 February 2026 18:12

Yes — I was doing a Qt 6 porting effort for Renderdoc a few weeks ago - and RenderDoc has its own string class (rdcstr) with cast operators between it and QString.

In Qt 6, QString went from being internally stored as UTF-8 to being stored as UTF-16, which made conversions more expensive, so I didn't want to make the conversions between QString and rdcstr implicit (plus, the compiler kept giving me ambiguous overload selection errors).

So — to make all of the conversions explicit, I needed to modify a *LOT* of code, and not something I could craft a regex to do. GenAI was a real big help here.

C++ & Qt

23 February 2026 18:10

std::vector is your default choice except you have a good reason not to

C++ & Qt

23 February 2026 18:07

Ronald Rivest is also the very same "R" in RSA, btw.

C++ & Qt

23 February 2026 18:06

Nah, I suppose it isn’t that much worse than most textbooks but it’s a lot more fun when you can use it immediately (and experience what it is all about)

C++ & Qt

23 February 2026 18:02

I didn't find the "Introduction to Algorithms" book to be dry — though you do need to consume it in small chunks to really understand it.

C++ & Qt

23 February 2026 12:13

Куплю USDT TRC20. Без посредников.

C++ & Qt

26 February 2026 03:38

someone is also having a boring evening today

C++ & Qt

25 February 2026 20:36

reciever is the big old x86

C++ & Qt

25 February 2026 20:32

btw, already noted this a few times before, why people always think of embedded device as of something
in
out
cpu-realmode level :D

it's full system, from grub-loader to linux-kernel, drivers for devices at bus, and gnome(so you even can configure it with hands in UI !!!). tho it may start 1 APP full-screen...

C++ & Qt

25 February 2026 20:26

I assume your qt runs at PC, maybe in your mini-linux-distributive with qt as in some embedded device. so access to qt you already have, you MUST not to tweak with mesa, etc. have to use simple approach — system starts your app fullscreen, etc.... just as normal app

cant imagine why you may think about opengl in encoding of stream-packet

C++ & Qt

25 February 2026 20:20

so heavily recommend to use existing API. if license is fine — best way is too hook to obs studio. has already all you may need. (by hook I mean — just compile into your project .obj that you need. but I'm sure there're public API, docs, and headless version)

C++ & Qt

25 February 2026 20:13

should not think through implementation theory. will solve task but not efficient. best to use/hook into already polished API, check the docs. github libs (including heavily qt-oriented but the only main part of the gears are Gather(in any way, may be capture dx-surface every 1/4 sec)-Cache with delay-Encoding-Send-Decode-Show with preloaded timeline optionaly(in any way may draw img as texture, may use qt-widget))

C++ & Qt

25 February 2026 20:10

should not work with pixels/redo everything, should work with packed cadr-S (img at timeline). there're already open-source solutions

example — any popular web-video platform

C++ & Qt

25 February 2026 12:10

Куплю USDT TRC20. Без посредников.

C++ & Qt

23 February 2026 18:14

I would contend that theoretic is what you need — to understand the time complexity and space complexity of different algorithms (Big-O in particular).

C++ & Qt

23 February 2026 18:12

About algorithms, which is really vital, STL gives you a bunch of good ones, but you can enhance your skills by dealing with related exercises or problems.

Benchmark each and do not expect better results just by knowing them.

C++ & Qt

23 February 2026 18:09

CLRS, is mostly theoretic.
I would suggest learning them each by real projects.

C++ & Qt

23 February 2026 18:07

It’s also very useful when you want to refactor or tweak the code

C++ & Qt

23 February 2026 18:05

This is how I use AI in my job (when I can). I will also use it to generate boilerplate application code.

C++ & Qt

23 February 2026 18:01

Get a copy of the CLRS (Thomas Cormet, Charles Liserson, Ronald Rivest, and Clifford Stein) book "Introduction to Algorithms" — it is a really good book for learning algorithms and data structures.

C++ & Qt

23 February 2026 11:48

@Ilya_6483 [8547462020] warned (1 of 2).
Due to: already deleted message once