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Generate waveform image from audio file using FFMPEG

This will generate waveform images (jpg) for all files inside media/audios and media/videos to a directory media/waveforms following the sufolder structure of media

Folder structure

Audio/video folder structure

|-- media
|   |-- audios
|   |-- videos

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# assuming we're inside "/a/b/c/d" directory
if not os.path.exists('./x/y/z'):
  os.makedirs('./x/y/z')

# this will create the folders "x", "y", and "z"
"""
.
|-- a
|   `-- b
|       `-- c

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ffmpeg -i AUDIOFILE.mp3 -c:a pcm_s16le AUDIOFILE_OUTPUT.wav

# we can add:
# -ac 1        to convert to mono
# -ar 16000    to convert to 16000 sample rate

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Transcribe audio file to text (speech-to-text) using IBM's Watson SpeechToText API

Convert audio to text using IBM Watson SpeechToText API.

API Reference: https://www.ibm.com/watson/developercloud/speech-to-text/api/v1/?curl#introduction

Each JSON result is stored on a separate file. Results are aggregated in a CSV file.

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Transcribe audio file to text (speech-to-text) using Google Cloud Platform's Speech API

Convert audio to text using GCP Speech API

Requirements

pip install --upgrade google-cloud-speech

Export the GCP credential env and execute the request

#!/bin/bash

ecovictoriano

Python Singleton

Here is how to implement singletons in Python

Taken from: https://stackoverflow.com/questions/31875/is-there-a-simple-elegant-way-to-define-singletons

ecovictoriano

from subprocess import Popen, PIPE

def shell_exec(cmd, cb=None, poll=True):
  with Popen(cmd, stdout=PIPE, bufsize=1) as p:
    if poll:
      while p.poll() is None:
        line = p.stdout.readline().decode('utf-8').strip()
        if callable(cb): cb(line)
        time.sleep(0.5)
      

ecovictoriano

def shell_exec(cmd, cb=None, poll=True):
  """execute a shell command

  cmd=str         command to execute

  cb=<callable>   callable function
  
  poll=True       whether to poll for updates"""
  with Popen(cmd, stdout=PIPE, bufsize=1) as p:
    if poll:

ecovictoriano

AWS Community Day PH Initiative

• When: September (tentative)
• Where: To be announced
• Pre-registration link: bit.ly/AWS2019

What is AWS Community Day?

AWS Community Days are community-organized cloud education events, featuring technical discussions and demos led by expert AWS users and industry leaders from around the world.

What to expect from AWS Community Day?

• Renew, Revive & Revitalize to exemplify your excitement about the work you do