saurzv / subtitle-extractor

Utility to generate subtitles of video inputs

Subtitle Extractor

link

---

Dependencies

Required binaries

(Must be installed on local machine)

• ccextractor

  • To extract closed caption

• redis

  • Used as message broker for celery

Required pip modules

• boto3

  • To connect with DynamoDB

• celery

  • To offload task in background

• django

• djago-celery-results

  • To store the task results in django database

• django-storages

  • To store files in remote server (AWS S3 in this case)

• djangorestframework

  • To make REST API

---

Run on local machine

Install the required binaries Clone the repository and install required pip modules

git clone https://github.com/saurzv/subtitle-extractor.git
cd subtitle-extractor
python3 -m venv env
source env/bin/activate
pip install -r requirements.txt

Create a .env file with these values :

AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY
DJANGO_SECRET_KEY

Make migratations and run server

python3 manage.py makemigrations
python3 manage.py migrate
python3 manage.py runserver

In another terminal with same virtual enivronment, run celery

celery -A server worker -l info

Visit the site at http://127.0.0.1:8000/

commands are written with bash shell in mind

---

Further scope of improvements

• Uploading large files can lead to the user being stuck on the homepage for a very long time. POST requests can be offloaded to celery in the background, and a waiting page can be shown with a polling API.
• Progress bar for file upload.
• Error pages can be implemented.
• Option to download the extracted .srt file can be implemented.