bsf | Modern C++14 library for the development of real-time | Game Engine library

I have a huge memory block (bit-vector) with size N bits within one memory page, consider N on average is 5000, i.e. 5k bits to store some flags information.
At a certain points in time (super-frequent - critical) I need to find the first bit set in this whole big bit-vector. Now I do it per-64-word, i.e. with help of __builtin_ctzll). But when N grows and search algorithm cannot be improved, there can be some possibility to scale this search through the expansion of memory access width. This is the main problem in a few words

There is a single assembly instruction called BSF that gives the position of the highest set bit (GCC's __builtin_ctzll()). So in x86-64 arch I can find the highest bit set cheaply in 64-bit words.

But what about scaling through memory width?
E.g. is there a way to do it efficiently with 128 / 256 / 512 -bit registers?
Basically I'm interested in some C API function to achieve this, but also want to know what this method is based on.

UPD: As for CPU, I'm interested for this optimization to support the following CPU lineups:
Intel Xeon E3-12XX, Intel Xeon E5-22XX/26XX/E56XX, Intel Core i3-5XX/4XXX/8XXX, Intel Core i5-7XX, Intel Celeron G18XX/G49XX (optional for Intel Atom N2600, Intel Celeron N2807, Cortex-A53/72)

P.S. In mentioned algorithm before the final bit scan I need to sum k (in average 20-40) N-bit vectors with CPU AND (the AND result is just a preparatory stage for the bit-scan). This is also desirable to do with memory width scaling (i.e. more efficiently than per 64bit-word AND)

Read also: Find first set

I have a NodeJS application running on an EC2 instance, which has some feature where users can record multiple videos.

When the user logs out I am using ffmpeg(version 4.2.4) to combine all those videos into single a video.

I am recording the video in WEBM format, and the final single video should be in MP4 format.

Suppose the user has recorded 3 videos of 10 minutes each, then in last when the user logs out, all these 3 videos should be combined into the single video on length of 30 minutes.

Now everything is working fine, but the CPU usage is high when all the conversation and concatenation are going around.

CPU usage is sometimes as high as 60-70%

The process I am following is

1. Convert the webm file to the mp4 file.

   ...

I have a AES 128bit encrypted m3u8 playlist. I tried to host this on,

1. Google Cloud Storage Bucket via Cloudflare
2. Local Xampp server

The playlist works on HTML5 web player. Then I tried to play the m3u8 file in a Android app. I tried, A Flutter app, A React Native app and a native Java app

I have tried almost all the HLS libraries available for Flutter and React Native. But at the end every players shows the same error Regarding Google ExoPlayer. I'm trying to fix this for almost a month now. I have checked most of the Github issues but no luck.

This is the error I see ( Copied from the Flutter terminal but same error shows for RN and native java app, too)

Description : I am trying to transform from xml to json using script mediator in wso2 3.2 api manager. The issue which I am facing is the script mediator method getPayloadXML() is not able to pull out a specific value from xml where it always returns as ReferenceError: "code" is not defined. I tried multiple things but couldn't figure out how to achieve this. Any help from someone would be really appreciable.

Response Mediation

I'm using below command to encrypt a MP4 video into a m3u8 type.

I am trying to use regex for word extraction in python, since I am beginner and not experienced in regex I want you to help me, I have this String :

I am scraping https://ic.gc.ca/eic/site/bsf-osb.nsf/eng/h_br02281.html with the rvest package in R. I would like to get the hyperlink associated with the company name. That portion of the html code looks like this: html

My code looks like this:

I am adding video stream capture functionality to a Xamarin Forms project. I am trying to use VLC's LibVLCSharp.Forms (https://github.com/videolan/libvlcsharp) package and the Mobile ffmpeg Xamarin wrapper package, Laerdal.Xamarin.FFmpeg.* (https://github.com/Laerdal/Laerdal.Xamarin.FFmpeg.iOS). However, the internal ffmpeg library from VLC is conflicting with the ffmpeg wrapper and is built with different flags which exclude functionality that I need.

For native development, it looks like you can configure a preferred library with the OTHER_LDFLAGS flag in the Pods-.debug.xcconfig file but I don't see where to do that with Xamarin.Forms. Source: https://github.com/tanersener/mobile-ffmpeg/wiki/Using-Multiple-FFmpeg-Implementations-In-The-Same-iOS-Application

How can I configure Xamarin iOS builds to prefer the mobile ffmpeg library over the VLC ffmpeg library? If I am able to use the mobile ffmpeg library, will it cause issues with VLC?

Here is a log message when I try to run commands with ffmpeg. As you can see, ffmpeg's internal library paths reference "vlc":

I have yet to solve this so far.

So here I have a