https://www.cyberlink.com/products/powerdvd-ultra/compare-versions_en_US.html
https://www.techhive.com/article/3384710/powerdvd-19-review.html
New Features
8K playback
360-degree-video spatial audio
color, lighting, and HDR TrueTheater enhancements for 4K video (these were formerly available only for 1080 video)
an internal 64-bit engine for more precise processing
support for external subtitles (streamed across the web)
HEIC/HEIF and GIF image support
WEBM support
https://www.techhive.com/article/3384710/powerdvd-19-review.html
New Features
8K playback
360-degree-video spatial audio
color, lighting, and HDR TrueTheater enhancements for 4K video (these were formerly available only for 1080 video)
an internal 64-bit engine for more precise processing
support for external subtitles (streamed across the web)
HEIC/HEIF and GIF image support
WEBM support