allanjos

Fedora 39 NVidia issues

Try 1: Rebuild NVidia kernel module with akmods.

sudo akmods --rebuild --kernels $(uname -r)

Reboot.

Try 2: Remove current NVidia kernel module and rebuild it.

allanjos

Anomaly Detection Anomaly Detection for Dummies https://towardsdatascience.com/anomaly-detection-for-dummies-15f148e559c1

Introduction to Anomaly Detection in R Learn statistical tests for identifying outliers and how to use sophisticated anomaly scoring algorithms. https://www.datacamp.com/courses/introduction-to-anomaly-detection-in-r

Anomaly detection Using Generative Adversarial Networks(GAN) https://medium.com/analytics-vidhya/anomaly-detection-using-generative-adversarial-networks-gan-ca433f2ac287

allanjos

Streaming: Mobile / Web

FFmpeg Web

• In-browser transcoding of video files with FFmpeg and WebAssembly https://blog.scottlogic.com/2020/11/23/ffmpeg-webassembly.html
• FFMPEG.WASM: ffmpeg.wasm is a pure WebAssembly / JavaScript port of FFmpeg. It enables video & audio record, convert and stream right inside browsers https://ffmpegwasm.netlify.app/
• Port of FFmpeg with Emscripten https://github.com/Kagami/ffmpeg.js/
• Ffmpeg.js demos, both for browsers and node.js https://github.com/muaz-khan/Ffmpeg.js/

Android Video Streaming https://stackoverflow.com/questions/2511045/streaming-to-the-android-mediaplayer

allanjos

let recordButton = null;
let stopButton = null;
let audioPlayer = null;
let playButton = null;
let chunks = [];

async function init() {
    console.log('init()');

    // Initialize UI controls

allanjos

package br.com.olivum.player.activity;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTrack;
import android.media.MediaCodec;
import android.media.MediaExtractor;

allanjos

WPF

Syntax Highlighting Editor

From Scratch

• Components
  • RichTextBox
• Line by line text accessing from RichTextBox https://social.msdn.microsoft.com/Forums/vstudio/en-US/1af3da39-a9f2-411c-a4b8-90c45b14301a/line-by-line-text-accessing-from-richtextbox?forum=wpf
• Use LockWindowUpdate to get flicker-free RichTextBox update https://weblogs.asp.net/JDanforth/88458
• Syntax Highlighting in Rich TextBox Control
  • Part 1 https://www.c-sharpcorner.com/article/syntax-highlighting-in-rich-textbox-control-part-1/
• Part 2 https://www.c-sharpcorner.com/article/syntax-highlighting-in-richtextbox-control-part-2/

allanjos

Ruby Language Tips

Setup

RVM

List available packages:

rvm list known

allanjos

Playing Digital TV channel in Linux:

ISDB-T Digital TV

It's needed to have a Digital TV receiver plugged in. It's used a MyGica Mac TV S880i device with the steps presented:

dmesg output:

[ 1103.828820] mc: Linux media interface: v0.10

[ 1103.834059] smsusb:smsusb_probe: board id=18, interface number 0

allanjos

Black/white:

ffmpeg -i VID_20210131_202207090.mp4 -vf format=gray VID_20210131_202207090-gray.mp4

Blur:

ffmpeg -i VID_20210131_202207090-gray.mp4 -filter_complex "[0:v]boxblur=luma_radius=10:chroma_radius=10:luma_power=1[blurred]" -map "[blurred]" VID_20210131_202207090-gray-blur.mp4

allanjos

AOSP

Fedora

Install dependencies:

dnf install \
  @development-tools \
  android-tools \