YouTube has a great transcription and captioning service. However, they only allow you to export in certain formats. These limitations decrease the ability for you to quickly turn your transcriptions into other valuable pieces of content.
Using Speak to generate your SRTs so they can be edited for YouTube will give you more freedom, provide YouTube viewers with a better experience, and help rank your videos higher on their search engine.
You can find more details on Google’s guide.
If you have a subtitle and closed caption file, you can upload it to your video. These types of files contain both the text and time codes for when each line of text should be displayed. Some files also include position and style information, which is especially useful for deaf or hard of hearing viewers.
Before you start, make sure that your file type is supported on YouTube.