Overlay audio with autogenerated closed captions (aka TTS)

[dudash]

Possibly leverage this open source (not the cloud service - run locally or on our servers)
https://opensource.googleblog.com/2019/08/bringing-live-transcribes-speech-engine.html

[dudash]

was thinking we could use NVIDIA RIVA. Did some brainstorming in Miro here:
https://miro.com/app/board/uXjVOZLd2gQ=/

[dudash]

• https://docs.nvidia.com/deeplearning/riva/user-guide/docs/tutorials-asr-contents.html
• https://github.com/nvidia-riva/tutorials/blob/stable/asr-python-basics.ipynb

notionally we will:
First, import the Riva API
Next, create a gRPC channel to the Riva endpoint
Then, create a ASR request

TODO - figure out if the stream format from RTC track can be sent directly to RIVA or a transformation is needed.
TODO - figure out how to launch local RIVA server to support local TTS
TODO - figure out where overlay text will appear? In chat log, in other part of CLI, do we need to refactor CLI UI (#5) first?

[dudash]

https://docs.nvidia.com/deeplearning/riva/user-guide/docs/asr/asr-overview.html#streaming-recognition