2 Caption tool features/upgrades

I would love to see 2 improvements made to the Captioning tool.

1. Being able to Export a .vtt file, not just an .srt. I work for an organization that uses a service that only accepts .vtt files. It would be nice not having to go into the file and change all the commas to periods. It's a real time suck, especially to make sure we don't accidentally change the punctuation in a sentense. It's also nice since we can't just install or use online tools to convert files.

2. I would like a "character counter" so I know how many characters are in a line. I think this is a very specific scenario, but when working with captions and transcripts, it's hard to make sure I'm counting correctly and I don't have time to count each character. This is a semi-accessibility reason, for Braille readers, as personally and organizationally, I don't want to have text broken in inconvient spots.