You have uploaded your video in Youtube and want to have accurate and correct spelling subtitles?
Or just want your video to have subtitles both in the internet and home player?
There is a way and I offer you to subtitle it into original english and if you want to reach the spanish community in the Internet, I can translate it and your video will be understood by 420 million people.
1 Gig: 1:30 minutes or 350 words in spanish You will get a .srt file Translation from English 1 extra Gig No automatic translation used
If you want your subtitles to be embedded in your video that's an extra Gig.