I bought Vegas Post and I installed with my license. Now I would love to have the Speech to Text option. Do I need to subscribe Vegas Post 365?
That feature is only available in the subscription version.
https://www.vegascreativesoftware.com/int/vegas-post/ (Click the globe button at the top bar of that page to see the url of your area)
TTS is only available in the subscription (365).
However, if you are only interested in TTS (and not the other extra features the subscription offer), and do not want to pay extra for a subscription to have TTS, there is an open-source solution available that works just as well (and arguably even better than Vegas implementation (Vegas uses Microsoft's solutions)).
It is called Whisper (openAI), and I made a Vegas Pro script for TTS that uses Whisper.
A fair bit of warning however: before you can use the script in Vegas Pro, it requires a substantial amount of installation of supporting software that Whisper is dependent on, such as Python, FFmpeg, Rust, etc. and some manual settings of environment variables. If you are not comfortable to go through all the trouble to prepare the environment for Wisper for reasons of time or the technicality of it, or are not familiar with Vegas Pro scripting, it is best to stick with the subscription option.
That being said, the process to install Wisper is elaborate, but doable, and once it is installed, it is a breeze to use the script:
It is all described in detail in my post on whisper with download links for the script and install documentation:
https://www.vegascreativesoftware.info/us/forum/speech-to-text-via-whisper-openai--137928/