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

 

Python tools

#Force to install a version Python-3.7.4

 wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz

tar xvf Python-3.7.4.tgz
cd Python-3.7.4
./configure --enable-optimizations --with-ensurepip=install
make -j 8
sudo make altinstall



#Install pip module into any version of Python

curl -o get-pip.py https://bootstrap.pypa.io/pip/get-pip.py
python3.8 get-pip.py  #or
python3.9 get-pip.py

Stock Price Prediction - data source

 

[1] Nasdaq API https://data.nasdaq.com/sign-up 

[2] API https://data.nasdaq.com/tools/python (API is in setting option)

ML Resources

 

[1] Machine Learning Simplified https://themlsbook.com/

 

 

 

3D Design software

 

 

[1] Tools ESP https://all3dp.com/es/1/mejores-programas-diseno-3d-gratis-modelado-3d

 

Convert webp to png

 

Any file to PNG

$ sudo apt install webp

$ for i in *.webp; do name=`echo "$i" | cut -d'.' -f1`; echo "$name"; dwebp "$i"
 -o "${name}.png"; done


Add to Nautilus Script

fincahuanaco@pisces:~/.local/share/nautilus/scripts$ cat toPNG   
dwebp $1 -o "$1.png" 
rm $1


$chmod +x toPNG 

Updated to Selection to PNG (2023)

#!/bin/bash
count=0 
success=0

# Transform command line arguments (if provided)
[[ -z "$NAUTILUS_SCRIPT_SELECTED_FILE_PATHS" ]] &&
    NAUTILUS_SCRIPT_SELECTED_FILE_PATHS=$(printf "%s\n" "$@")

# Process each file in turn
while IFS= read -r src
do
    if [[ -f "$src" ]]
        then
      # Target
      dst="${src}.png"

      # Primary conversion to PNG
      step=0
    
      dwebp $src -o $dst  && ((step++))

      # Remove src
      if [[ step -eq 1 ]]
      then
        rm $src && ((step++))
      fi

      # Update
      if [[ step -eq 2 ]]
      then
          ((success++))
      fi

      # Count it
      ((count++))
    fi

done <<<"$NAUTILUS_SCRIPT_SELECTED_FILE_PATHS"

[[ count -gt 1 ]] &&
    notify-send "Conversion finished ($success files of $count)"

exit $((count - success)) 

AVIF format support

[1] libavif https://github.com/AOMediaCodec/libavif/ 

 
References:

[1] https://unix.stackexchange.com/questions/710013/making-a-bash-script-apply-to-only-selected-files-nautilus 

Linux Libraries path

#Cuda 8.0 Settings
export CUDA_HOME=/usr/local/cuda-8.0
export LD_LIBRARY_PATH=${CUDA_HOME}/lib64  
PATH=${CUDA_HOME}/bin:${PATH}


#Cuda 9.1 Settings
export CUDA_HOME=/usr/local/cuda-9.1
export LD_LIBRARY_PATH=${CUDA_HOME}/lib64  
PATH=${CUDA_HOME}/bin:${PATH}


#Cuda 9.2 Settings
export CUDA_HOME=/usr/local/cuda-9.2
export LD_LIBRARY_PATH=${CUDA_HOME}/lib64  
PATH=${CUDA_HOME}/bin:${PATH}

 

$ LD_LIBRARY_PATH=. ./programtest  #direct execution
 

$ echo $LD_LIBRARY_PATH  
/usr/local/cuda-8.0/lib64
 

$ ls /etc/ld.so.conf.d
cuda-8-0.conf                   opencv.conf
fakeroot-x86_64-linux-gnu.conf  x86_64-linux-gnu.conf
glew.conf                       x86_64-linux-gnu_EGL.conf
i386-linux-gnu.conf             x86_64-linux-gnu_GL.conf
libc.conf                       zz_i386-biarch-compat.conf

$ldconfig -p  #list libraries

$sudo ldconfig #update paths

 

 


 

C/C++ Tools

 

[1] BIC Interactive C tracer https://github.com/hexagonal-sun/bic

Miner cryptocurrency

 

[0] Card power https://whattomine.com/ 

[1] Linux Dodge https://www.youtube.com/watch?v=Ng-OU38-RjY

     Tool for mine Dodge https://xmrig.com/download

[2] Linux bittorrent https://www.youtube.com/watch?v=y5EWimXPOD0 

[3] Linux Minero(Alternative to xmrig) https://www.youtube.com/watch?v=NMMiT_eMd-s

[1] Windows tool https://unmineable.com/coins/MATIC

[2] How to mine Matic ESP https://www.youtube.com/watch?v=m_qLQQSWRW0

 

Cryptomarket Trading and bots

Bots

[1] Master disseration about bots https://repositorio.ufpe.br/bitstream/123456789/30495/1/DISSERTA%C3%87%C3%83O%20Severino%20Mizael%20da%20Silva.pdf

[2] Api info https://www.mercadobitcoin.com.br/trade-api/

[3] Documentation https://www.mercadobitcoin.com.br/docv4#section/Overview 

[3] Documentation v5.3 https://api.mercadobitcoin.net/api/v4/docs

[3] Glossary https://www.mercadobitcoin.com.br/trade-api/#glossario-trade-api

[4]  Api Wrapper MB

       https://github.com/mbampi/mercado-bitcoin 

       https://github.com/samuelfac/mb-api-client-python

[5] Api Wrapper Binance https://python-binance.readthedocs.io/en/latest/

 

Other Strategies

[1] https://zignaly.com/

[2] Free option/triggers https://www.cryptohopper.com/pricing 

[3] Copy trading https://www.napbots.com

[4] Bots $15 / month  https://tradesanta.com/en/pricing 

[5] 1 free Bot https://3commas.io/pricing

[6] AI powered https://signalboa.com

[7] Bots https://bitsgap.com/pricing/