Media utils

Video Subtitles

This tutorial explains how to add subtitles to the video files.

Prepare

Install:

sudo apt install qnapi uchardet ffmpeg recode

Download subtitles for your language

qnapi -l pl *.mp4
qnapi -l pl *.mkv

Detect encoding

uchardet *.txt

Expect UTF-8, Windows-1250 or UTF-16.

Verify that converted encoding is actually fine

cat S01E03.txt | recode cp1250..utf8
cat S01E03.txt | recode utf16..utf8

Recode to UTF8

recode cp1250..utf8 *.txt
# or
recode utf16..utf8 *.txt

Convert to SRT

Convert TXT to SRT, add .default.srt suffix for Jellyfin:

ffmpeg -i 'S01E03.txt' 'S01E03.default.srt'

ls -1 *.txt | sed -e 's/\.txt$//g' | xargs -d '\n' -I %s echo 'ffmpeg -i "%s.txt" "%s.default.srt"'

Appendix

Do the ffmpeg conversion for all TXT files in the current directory:

from pathlib import Path
from nuclear import shell

for path in Path('.').iterdir():
    if path.name.endswith('.txt'):
        stem = path.name[:-4]
        print(f'converting {path.name}')
        shell(f"ffmpeg -i '{stem}.txt' '{stem}.default.srt'")

Download YouTube video as MP4

pip install -U yt-dlp
yt-dlp -f 'bestvideo[height<=1080][ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best' URL