AWS Elemental MediaConvert now supports Internet Media Subtitles and Captions (IMSC) 1.1 text profile captions. IMSC is a file format that uses XML to describe text, timing, layout, and styling for subtitles and captions. MediaConvert can ingest IMSC text profile sidecar files and can read IMSC from IMF packages. IMSC text sources can be burned in as subtitles, converted to other text-based outputs such as SRT or WebVTT, or output as IMSC sidecar files. To learn more, please read the user guide .