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Extract and prettify YouTube transcripts
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# -*- coding: utf-8 -*- | |
# @Author: Isaac Pei | |
# @Date: 2020-09-28 18:11:14 | |
# @Last Modified by: Isaac Pei | |
# @Last Modified time: 2021-05-29 13:49:12 | |
## Take the vtt file as input, to generate the transcript text, 1 per line | |
# -- | |
# -- There is an online tool doing similar work: https://hierogly.ph/ | |
import sys | |
import re | |
vtt_input = sys.argv[1] | |
previous_line = "" # Define previous line, only when line is different then print | |
with open(vtt_input) as f: | |
for l in f: | |
if "align:start" in l: | |
pass | |
elif "<c>" in l: | |
# for those <c> </c> marked split worded lines | |
# there are often repeated full line in the next few lines | |
pass | |
elif l.strip(): | |
# Reach below only when line is not empty | |
line=re.sub(r"<.*>", " ", l.strip()) | |
if line != previous_line: | |
print(line) | |
previous_line = line |
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#!/usr/bin/env bash | |
# DESCRIPTION | |
# Given the input url, download the transcipt from url ($1) | |
# USAGE | |
# yt_transcript_dl.sh $URL | |
# e.g. yt_transcript_dl.sh https://youtu.be/LSvJX2pJxQ | |
# dependencies for MacOS, comment these out if not needed | |
# needs youtube-dl | |
brew install youtube-dl | |
# needs jq | |
brew install jq | |
# needs coreutils | |
brew install coreutils | |
# The following command is used to download the youtube transcript | |
url="$1" | |
mkdir -p input/ | |
mkdir -p output/ | |
# getting title | |
title=$(youtube-dl -f mp4 -o '%(id)s.%(ext)s' --print-json --no-warnings --skip-download "$url" | jq -r .title) | |
title=$(echo "$title" | sed 's/ //g') | |
# downloading transcript | |
youtube-dl --write-auto-sub --output "input/transcript" --skip-download "$url" | |
# cleaning up | |
python ./parse_youtube_transcript.py input/transcript.en.vtt > output/"$title"-transcript.txt | |
rm -rf ./input | |
echo "The transcript is available at:" $(find . -iname "$title*" -exec realpath {} \;) |
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