How to modify this sed awk command so that the output goes to a file of choice?

Question

I am using the last command from this SO answer https://stackoverflow.com/a/54818581/80353

cap()(cd /tmp;rm -f *.vtt;youtube-dl --skip-download --write-auto-sub          


        

Answer 1

Here's a detailed bash script for those who wants to save the subs file with a relative path.

The result is saved as plaintext, removing time, new lines and other markup.

#!/bin/bash
# video-cap.sh videoUrl sub.txt

# Download captions only and save in a .vtt file
youtube-dl --skip-download --write-auto-sub "$1";

# Find .vtt files in current directory created within last 3 seconds, limit to 1
vtt=$(find . -cmin -0.05 -name "*.vtt" | head -1)

# Extract the subs and save as plaintext, removing time, new lines and other markup
sed '1,/^$/d' "$vtt" \
  | sed 's/<[^>]*>//g' \
  | awk -F. 'NR%8==1{$1}NR%8==3' \
  | tr '\n' ' ' > "$2"

# Remove the original .vtt subs file
rm -f "$vtt"