How small should input files be?

[SamyBencherif]

It also appears that the API only likes smaller audio files so there is a built in chunker that allows us to split the audio up into smaller chunks.

I have a large audio file I wish to convert. It did not work all at one go, so I'm opting to split it up. I'm not a ruby programmer so I was going to do it myself. What's an example file size that has worked for you? IE do I need 7 quarter hour long files or 100 minute long files?

Or should I abandon splitting it myself altogether and use the built in chunker? If so, how might I go about that?

Thanks in advance!