MediaConvert : passthrough for Font styles and positionning for WebVTT

Thanks for your question. AWS MediaConvert has the ability to pass through Captions Style information, for certain output formats, such as TTML, WebVTT and IMSC. Perhaps this link will help describe the Style information passed.

https://docs.aws.amazon.com/mediaconvert/latest/ug/ttml-style-formatting.html

When configuring the Captions for a specific output, once selecting the type of Captions, you can select Enable for Pass Style Information.