How to Add Subtitles to MP4 YouTube Video

Why do we intend to add subtitles?

*For hearing-impaired members in family who are not that desperate for a hearing aid, embedding subtitles or closed captions to videos for them would be very considerate. In this case, closed captions are what you need to find.
*For those who can't understand foreign languages, inserting subtitles to foreign movies, like Amelie (Le fabuleux destin d'Amélie Poulain), Baahubali the Conclusion बाहुबली: द कॉन्क्लूज़न, and Ghost in the Shell 攻殻機動隊, can facilitate your comprehension. In this case, narrative and forced subtitles are what you should looking for.
*Easier to track and understand the lyrics if it's a music video: like Sia the Greatest.
*Sci-fi movies and TV series may contain alien languages like Klingon in Star Trek: the Next Generation, and other sign languages. To understand what they are saying, forced subtitles are definitely needed.
*Also, for those who want to learn foreign languages by watching videos and movies, embedding subtitles is always necessary for them to take notes and make sure the correctness.
*Also, how can we forget those who want to watch 3D movies with 3D subtitles.

Info about Subtitles:

There are two kinds of subtitles in terms of manipulability: Closed subtitle and Hardsubs. Closed subs can generally separate video frames overlaying the original ones so that can be turned off, while Hardsubs or open subtitles are irreversibly part of the original video frame, therefore cannot be turned off. Thus, to add extra subtitles to a video, you might want to avoid videos with hardsubs.

Closed subtitle formats can be divided further into 2 categories: image based subtitles (Prerendered) and text based subtitles.
SUB/(DIXSUB) is a typical image subtitle format that is apt at maintaining perfect accuracy and usually mixed into MKV files;
SRT is a commonly used text based subtitle formats usually encoded in AVI files that can be edited and extracted easily.
So, before loading subtitles, make sure the format you have or want.

Where to Obtain Subtitles to Be Added in the Movies?

*Download Subtitles from Best Online Subtitle Sites: if you want to add subtitles for commercial movies in MP4, AVI, MKV formats, you can easily find them online. Note that subtitle formats like SRT, ASS, SSA, SUB goes well with these MP4, AVI, MKV formats.
You can search the subtitle by typing the full name of the movie into the Google search box and then add "subtitles" or "subs". Google will present you some online websites providing with those subtitles in many languages. Take Dawn of the Planet of the Apes as an example, you will find its subtitles of all kinds (forced subtitle, narrative, content subtitle and even 3D subtitles) in many languages like Arabic, Bengali, Brazillian Portuguese, Coratian, etc in 2016 great subtitle sites like Moviesubtitles.org, Subscene.com, Opensubtitles.org, Subtitles.hr, yifysubtitles.com.

*Create Your Own Subtitles for your home-made videos/gang-reels to be uploaded on YouTube/Face Book for sharing. Popular subtitle formats like SRT and SUB goes well with YouTube videos.
In this scenario, you can create your own subtitles by using freeware like subtitle editor, AHD subtitle maker, subtitle workshop, Jubler, SubMagic, and Gaupol etc, and then put the subtitles to YouTube videos or movies for uploading on video sharing sites.

*Extract Subtitles from Videos Using Subtitle Extractors. You can use a subtitle extractor like MKVExtractGUI-2 or MKVcleaver with MKVtoolnix to extract subtitles from AVI, MP4, WMV, MKV movie videos etc and then insert subtitles to another video/movie. Note that subtitles in DVDs are stored in VOB files and unlike text -based subtitles, subtitles in DVD can't be edited, scaled or modified. Refer to detailed guide on how to extract subtitles from DVD.

What Can 5KPlayer Do for Subtitle Insertion?

This free subtitle adding tool supports 42 subtitle encodings and tons of varied text fonts in 5 major sizes i.e. smaller/small/normal/large/larger. Uers can customize the text default color, background color, and the corresponding opacities as they like. When the preset is done, users can right click and select load subtitle file to let 5KPlayer automatically detect your subtitle file via format or name. This is very handy subtitle adding software as it combines video download, playback and subtitle insertion into one, achieving one-stop solution for a smooth video enjoyment.