Jetson Nano installation

 

Installing cuda11 in Jetson Nano [1]. All instructins works, but doesn't run on it. Better is cuda10.

 

[1] https://jfrog.com/connect/post/installing-cuda-on-nvidia-jetson-nano/

 

 

Errors:

The following packages have unmet dependencies

...
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

Fix:

sudo apt-get -o dpkg::Options::="--force-overwrite" install --fix-broken

 

Python and OpenCV issues

Error:

   import cv2, numpy as np,time
 File "/home/fincahuanaco/.local/lib/python3.7/site-packages/cv2/__init__.py", line 3, in <module>
   from .cv2 import *
ImportError: numpy.core.multiarray failed to import

 

Solution:

$ python3 -m pip install opencv-python==4.0.0.21

$ python3 -m pip list  
 

opencv-python          4.0.0.21

numpy                  1.15.0

 

Other combinations

opencv_python==4.4.0.46 and numpy==1.19.3 works.

 

AWS Python issues

$ curl -O https://bootstrap.pypa.io/get-pip.py
$ python3 get-pip.py --user
 

References:

[1] https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/eb-cli3-install-linux.html

 

AWS Common commands

 

Without ifconfig command

public IP

$ curl ifconfig.me

private IP

$ ip addr 

References:

[1] https://opensource.com/article/18/5/how-find-ip-address-linux

Vocal Remover

 

[1] AI Vocal Remover and Isolation https://vocalremover.org/

[2] AI Vocal remover, it split in to tracks https://multimedia.easeus.com/vocal-remover/    #2024

[3] Split Music and Vocal https://studio.mikrotakt.app/  #2024

 

Register as researcher in Peru country

 

Sunedu 

Renacyt

1) https://ctivitae.concytec.gob.pe/appDirectorioCTI/

2) http://regina.concytec.gob.pe 

3) https://www.gob.pe/9648-ser-parte-del-registro-nacional-cientifico-tecnologico-y-de-innovacion-tecnologica-renacyt

 4) https://www.gob.pe/9603

[5] Niveles I-VII https://conocimiento.concytec.gob.pe/preguntas/renacyt/cuales-son-los-niveles-de-clasificacion-de-los-investigadores-renacyt/

[6] Reglamento https://portal.concytec.gob.pe/images/renacyt/reglamento_renacyt_version_final.pdf

[7] Qualis/BR https://homepages.dcc.ufmg.br/~bigonha/Ranking/cc-qualis-conferencias-2016-ranking.pdf

[8] SCImago Journal Rank http://www.scimagojr.com/journalrank.php

[9] JCR https://jcr.clarivate.com/jcr/browse-journals

[10] Global Ranking  https://www.topuniversities.com/university-rankings/world-university-rankings/2024

[11] Reglamento de Evaluación https://www.unsa.edu.pe/transparencia/docs/regl-ensenanza-aprendizaje.pdf

(keyword:unsa  san agustin nota vigesimal)

[12] EPIS Egresados por año https://fips.unsa.edu.pe/ingenieriadesistemas/lista-de-egresados/

ffmpeg: Extract audio and reinsert a new for use in whatsapp

 

#Extract audio

ffmpeg -i mad-pi.mp4 -map 0:a:0 mad-pi_audio.wav 

 

#Extract reinsert new audio

ffmpeg -i mad-pi.mp4 -i mad-pi_audiohd.mp3 -c:v copy -map 0:v:0 -map 1:a:0 new.mp4
 

#reencode for whatsapp

ffmpeg -i new.mp4 -c:v libx264 -profile:v baseline -level 3.0 -pix_fmt yuv420p working.mp4

 

Python tools for Web Developers

 

[1] FastAPI https://fastapi.tiangolo.com/

[2] Dash Python https://dash.plotly.com/background-callbacks

 

Ringtones: Download mp3

 

 

Resources:

[1] Easy download https://mp3-ringtone.com/

[2] Play and using FireBug download https://www.zedge.net/find/ringtones/2023

ffmpeg: Extract mp3 from video

 

 ffmpeg -i mad-principio_peter.mp4 -vn -y out1.mp3 #9M

 

ffmpeg -i mad-principio_peter.mp4 -f mp3 -ab 192000 -vn out2.mp3 #14M

ffmpeg -i mad-principio_peter.mp4 -f mp3 -ab 128000 -vn out3.mp3 #9M
ffmpeg -i mad-principio_peter.mp4 -vn -acodec libmp3lame out4.mp3 #9M

ffmpeg -i mad-principio_peter.mp4 -acodec libmp3lame -ab 128k out5.mp3 #9M

ffmpeg -i gym.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis gym.webm -hide_banner

Second

ffmpeg -i sample.avi -q:a 0 -map a sample.mp3  #complete

ffmpeg -i sample.avi -ss 00:03:05 -t 00:00:45.0 -q:a 0 -map a sample.mp3 #fraction

Parameters :

-q:a 0 for variable bit rate

-ss starting timestamp

-t  the encoding time (If you don't specify, it will go to the end)

-map 0:a:3 selects audio stream #4 (ffmpeg starts counting from 0) 

** specific the timestamps in HH:MM:SS.xxx format.

 

References:

[1] https://json2video.com/how-to/ffmpeg-course/ffmpeg-extract-audio.html

Download zip file from Google Drive

 First

Share your file in GD (with anybody access by link) and get FILEID

Second

Execute next code(replace FILEID and choose FILENAME):

wget --load-cookies /tmp/cookies.txt "https://docs.google.com/uc?export=download&confirm=$(wget --quiet --save-cookies /tmp/cookies.txt --keep-session-cookies --no-check-certificate 'https://docs.google.com/uc?export=download&id=FILEID' -O- | sed -rn 's/.*confirm=([0-9A-Za-z_]+).*/\1\n/p')&id=FILEID" -O FILENAME && rm -rf /tmp/cookies.txt

 

Note:

Previous methods doesn't work, because now GD needs confirmation, then using cookies it's possible.

Ubuntu NFS Installation

On Server (10.10.7.229):

$ sudo apt install nfs-kernel-server  #install server

$ sudo mkdir -p /mnt/nfs_drive  #create share point

$ sudo chown -R nobody:nogroup /mnt/nfs_drive  #no owner

$ sudo chmod 777 /mnt/nfs_drive  #set r/w permission

$ sudo vi /etc/exports  #define clients grants
 

/mnt/nfs_drive 10.10.7.218(rw,sync,no_subtree_check) #mine
/mnt/nfs_drive 10.10.7.235(rw,sync,no_subtree_check) #houdini

$ sudo exportfs -a

$ sudo systemctl restart nfs-kernel-server
 

On Client: 

$ sudo apt install nfs-common 

$ sudo mkdir -p /mnt/nfs_drive_client   #mirror

$ sudo mount 10.10.7.229:/mnt/nfs_drive /mnt/nfs_drive_client

Notes: 

$ sudo ufw status  #verify the firewall, more details in reference[0]

References: 

[0] Working https://linuxhint.com/install-and-configure-nfs-server-ubuntu-22-04/

[1] https://www.tecmint.com/install-nfs-server-on-ubuntu/

qemu bridge to enable network during simulation

 Install brctl

 sudo apt install bridge-utils

Add new virtual bridge

sudo brctl addbr virbr0
sudo brctl addif virbr0 eth0 

Check

/etc/qemu-ifup and /etc/qemu-ifdown  #files
 

 

 

 

Candide Model Applications

 

[0] Model and code https://github.com/wobushizhanghua/candide3-face/blob/master/src/main.cpp

[1] Landmark 3D https://webspace.science.uu.nl/~veltk101/publications/art/wss06.pdf 

[2] https://github.com/MarekKowalski/FaceSwap

[3] https://github.com/jorticus/face-replace/blob/master/README.md

 

Gimp Python-Fu

 

[0] https://www.gimp.org/docs/python/index.html#PREGION-OBJECT-MEMBERS

[1] https://www.gimp.org/docs/python/index.html#DRAWABLE-OBJECT-METHODS

[2] http://myvirtualbrain.blogspot.com/2012/06/gimp-python-fu-very-basics.html 

[3] Samples https://github.com/jfmdev/PythonFuSamples

[4] https://github.com/gummyCowboy/GIMP-python-fu

[5] https://gist.github.com/garystafford/5259576a7e9299d5b80284489aa25fc3

OnLine Animation

[0] gif editor crop, mp4 to gif https://ezgif.com

[1] https://www.powtoon.com/?locale=en

[2] https://www.animaker.com/

[3] https://biteable.com/

 

 

Houdini Trying to use textures

 

[1] How to use textures on Houdini

http://wordpress.discretization.de/houdini/home/advanced-2/textures/

[2] Repository of textures with normals

https://opengameart.org/content/50-free-textures-4-normalmaps

[3] Textures for Blender

https://polyhaven.com/textures/brick/outdoor/wall

[4] HDRs (Environment Ilumination patterns) https://polyhaven.com/hdris

NVIDIA tools

 

 

[1] https://github.com/NVIDIA/warp

Ubuntu upgrade cmake

 

1. Download https://cmake.org/download/

2. Unpack and enter to folder to execute commands

./bootstrap
make -j$(nproc)
sudo make install

 References

[1] https://askubuntu.com/questions/355565/how-do-i-install-the-latest-version-of-cmake-from-the-command-line

 

Linux: Debuging and Inspecting binary files and libraries

 

 

$ nm libmanson.so | grep -n apply
1:00000000000058ef T apply