A few years ago YouTube introduced a premium subscription service that allowed consumers to watch YouTube videos without ads. The new feature is called YouTube Red. However, Google abandoned the brand name in May 2018 and renamed the service as YouTube Premium.
YouTube Premium is a premium membership that gives you ad-free, feature-rich (offline viewing), and increased access to several Google video and music services, including YouTube, YouTube Music, YouTube Gaming, and YouTube Kids.
A transcript is a text version of all the words spoken in the video in sequence. You may want to get a transcript of a YouTube video for whatever reason; there are a number of ways to do that. Although reaching 100% accuracy of the transcript is not guaranteed, it can be achieved if the video uploader uploads the transcribed file too. YouTube offers the option for content creators to upload a transcript file with their videos. By owning the transcribed video, and uploading the transcript to YouTube, Google gets specific information about the video's content. This helps in the SEO of questionable videos.