Q:"Which is the best software for adding subtitles to an .mp4 video file?" – Question from Quora

It's a really disappointed thing when you watch your favorite MP4 video on a player, only to find there is no subtitle matched with it. Worst of all, the language is not the native one you can understand by yourself. So how can you get out of this worry? As the question asked, you have to primarily choose one proper software. Then it's your time to add subtitles to MP4 with the selected best tool.