Thank you for reaching out with this question.
One thing that can help you adjust the accuracy is looking only at topics and labels with high confidence score in the insights JSON and filter out lower confidence results.
In addition, can you report the issue (with the video information) using the follow these steps:
Trial account customers:
- Go to the "Issues" tab on the Video Indexer Developer Portal (https://portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/newsupportrequest) and sign in
- Scroll down and click "Report Issue"
Paid account customers:
- Go to Azure portal Help + support (https://portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/newsupportrequest)
- Create a new support request. Your request will be tracked within SLA.