About subtitles for videos on Commons

After uploading a video on Commons, I had a hard time trying to figure out how to add subtitles in another language. I wonder if there are any efforts aimed at making this process simpler, so more people can add subtitles.

Considering the amount of videos there are out there, am I crazy to think that people would be more likely to contribute if this tool existed? Feel free to point me to the tool or the procedure if it exists. :smiley: