When using Slides for .Net to convert a PPTX file to HTML, embedded videos are not included; they render instead as just a dark box with no controls.
Documentation on how to handle video seems to only show how to add a video: https://docs.aspose.com/slides/java/convert-powerpoint-to-html/#export-media-files-to-html
or that these need to be handled manually:
PPTX - video will not preserved
Is it possible for Slides to convert the PPTX to HTML and automatically preserve the embedded videos, like it does for images? If it is possible, a short code sample would be very helpful as your documentation does not seem to cover this topic very well. Note that saving the video to a file and linking it, would be acceptable.