I have been watching Ros na Rún. Mainly because I am a messy bitch that lives for drama but also to learn Irish. The subtitles are really high quality. Here is how to extract them.
Go to the episode you want. And make the developer tools viewable at the bottom of the browser
TG4 have gone to the trouble of making great subtitles. And they want people to learn the language. It would be good to turn this resource into something that helped people even more. For learners to watch an TV episode and have a list of new words and their meaning might really help their learning.