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Science 🔬 + FLOSS 🐧 = 💖

Kevin Wittek kiview

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Science 🔬 + FLOSS 🐧 = 💖
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kiview / video_merge.py
Created January 21, 2021 19:09
Add overlay text to videos and concat them to single video using ffmpeg
#!/usr/bin/env python3
import os, glob
def write_text(input, output, text):
cmd = f"ffmpeg -i {input} -vf drawtext=\"fontfile=/path/to/font.ttf: text='{text}': fontcolor=white: fontsize=42: box=1: [email protected]: boxborderw=5: x=(w-text_w)/2: y=100\" -codec:a copy {output}"
print(cmd)
os.system(cmd)
def merge_videos(folder):
with open('./input.txt', 'a') as input_file:
@kiview
kiview / acc_ubuntu_oracle.md
Created November 1, 2020 20:24
Setup descriptions for acc game server with accweb in Oracle Cloud on Ubuntu

Create computing instance (e.g. VM.Standard2.1)

Install wine apt install wine

Copy accServer.exe to ~/accServer/accServer.exe

Download accweb release https://github.com/assetto-corsa-web/accweb/releases/download/1.11.2/accweb_1.11.2.zip

@kiview
kiview / EthereumTransactionExtractor.java
Created June 15, 2020 06:49
Extract historic Ethereum transactions using web3j
public class EthereumTransactionExtractor implements AutoCloseable {
private final WebSocketService webSocketService;
private final Web3j web3j;
private final ObjectMapper mapper = new ObjectMapper();
private final JsonGenerator jsonGenerator;
public EthereumTransactionExtractor(String url, String fileName) throws IOException {
webSocketService = new WebSocketService(url, false);
@kiview
kiview / stream-gpu.sh
Created May 27, 2020 10:45
Stream and record a webcam with gstreamer usinc NVIDIA hardware encoding for saving the recording
GST_PLUGIN_PATH=$GST_PLUGIN_PATH:/usr/local/lib/gstreamer-1.0/ gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw, format=UYVY, width=1920, height=1080, framerate=60/1 ! tee name=t ! queue ! videobalance saturation=0.0 ! videoflip method=horizontal-flip ! timeoverlay halignment=center valignment=center ! videobox top=200 bottom=200 left=355 right=355 ! videoscale! videoconvert ! autovideosink t. ! queue ! videoconvert ! nvh264enc ! h264parse ! flvmux ! filesink location=recording-gpu.flv -e
@kiview
kiview / ASUS ALC887-VD 5.1 (Ubuntu)
Last active March 31, 2020 07:36
5.1 sound for ASUS ALC887-VD onboard audio in Ubuntu
Model: ALC887-VD
head -n 1 /proc/asound/card0/codec*
Codec: Realtek ALC887-VD
zless /usr/share/doc/alsa-base/driver/HD-Audio-Models.txt.gz
asus 3-jack (ASUS Mobo)
Edit:
/etc/modprobe.d/alsa-base.conf
@kiview
kiview / disable-nvidia.sh
Last active February 5, 2021 22:40
Dell XPS 15 9570 - Fedora 29
# Since out of the box support of nvidia is sketchy, I've done these things to disable nvidia completey.
# Disable nouveau driver
vim /etc/default/grub
# -> Disable nouveau, also use s3 as default suspend mode
# GRUB_CMDLINE_LINUX="resume=/dev/mapper/fedora-swap rd.lvm.lv=fedora/root rd.luks.uuid=my-id rd.lvm.lv=fedora/swap rhgb quiet nouveau.modeset=0 mem_sleep_default=deep"
grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
@kiview
kiview / day1_1.groovy
Last active December 15, 2017 09:43
Advent of Code 2017
def calcDigitSum(String digits) {
digits.collect {it}.withIndex().collect { String entry, int i ->
def nextIndex = (i < digits.length() - 1) ? i + 1 : 0
String nextDigit = digits[nextIndex]
(entry == nextDigit) ? Integer.parseInt(entry) : 0
}.sum()
}
@Bean
KTable reportStream(StreamsBuilder builder, Engine engine) {
def stream = builder.stream(topic)
.groupBy({ key, word -> word })
.windowedBy(SessionWindows.with(TimeUnit.SECONDS.toMillis(1)))
.aggregate(
new Initializer<Long>() {
@Override
Long apply() {
@kiview
kiview / ansible_install.sh
Created January 22, 2017 13:57
Install Ansible on Ubuntu
apt-get install software-properties-common
apt-add-repository ppa:ansible/ansible
apt-get update
apt-get install ansible
@kiview
kiview / upgrade.yml
Last active November 3, 2023 12:52
Ubuntu upgrade with Ansible
---
- hosts:
- all
become: true
tasks:
- name: Update apt cache
apt: update_cache=yes
- name: Upgrade packages
apt: upgrade=dist