Google Code-in

"Given a video file and a subtitle file (through an arguments list or standart input), the task is to write a program to ""burn"" subtitles on video (or ""draw"" them, or ""create hard subs"", call it whatever you want). It's better to have some additional arguments like the size of the text and its color.

Hint: there are a lot of free video and subtitles processing libraries exists. You aren't required to write your own video format decoder or something like that."

Hint2: Take a look at ffmpeg.