While 200 MB is the size limit for uploaded videos there are two possible workaround that allow users to include larger videos in a presentation.

1. If the video isn’t in MP4 format, try converting it into an MP4. This should condense the video and shrink the total size
2. Break the video into smaller chapters and upload the chapters individually. You can then set up a series of identical slides, each with one chapter of the video. If the slides are set to auto advance when the video finishes the sequence will appear to be one long video

ADVANCED NOTE: The size limit for uploaded videos in Lite accounts is 100 MBs. Lite users can upload videos of up to 200 MB by upgrading to a Trial, Pro, or Enterprise plan.