Tejeshwarabm

# Convert Video to audio
    ffmpeg -i video.mp4 -c:a pcm_s16le audio.wav 

# Concatenate 2 or more video files
    ffmpeg -i concat: "part1.avi | part2.avi | part3.avi" output.avi
    
# Crop the video
    ffmpeg -i input.avi -ss 00:00:25 -t 00:00:10 -async 1 ouput.avi
                                          where, -i:      input
                                                 -ss:     start time

Tejeshwarabm

Microsoft: 
  https://docs.microsoft.com/en-us/cognitive-toolkit/object-detection-using-faster-r-cnn
  
  <to create ur own dataset>
  https://docs.microsoft.com/en-us/cognitive-toolkit/Object-Detection-using-Fast-R-CNN#train-on-your-own-data
  
  <To create annotation>
      https://github.com/Microsoft/VoTT/releases
      https://github.com/Microsoft/VoTT/blob/master/README.md

Tejeshwarabm

$ sudo apt install npm
$ sudo npm install dna2json -g
$ dna2json
npm WARN checkPermissions Missing write access to /usr/local/lib
/usr/local/lib
`-- dna2json@1.0.7 
  +-- first-match@0.0.1 
  +-- lodash.reduce@3.1.2 
  | +-- lodash._basecallback@3.3.1