Add srt subtitles to mp4 files with ffmpeg

Step 1

Go to the directory where your video files are.

Step 2

Make sure you have the desired subtitle files ( `.srt` ) and that they have the same filename as the source video files. So, if you have videofile_01.mp4, you should have videofile_01.srt.

Step 3

Make sure ffmpeg is installed.

Step 4

Copy the below script to a file, for instance: `add_subtitles.sh` and modify the file properties to make it executable.

chmod +x add_subtitles.sh

#!/bin/bash
for i in ./*.mp4
   do
      ffmpeg -i "$i" -i "${i%.*}.srt" -c copy -c:s mov_text "added/${i%.*}-added-subtitle.mp4";
      echo -e "${1} converted successfully ${i%.*}-added-subtitle.mp4";
   done

Step 5

Execute the script by running add_subtitles.sh.

Step 6

Test the generated file(s) and remove the one(s) without subtitles if you want to free up some disk space.

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