Here is two small files, both a quarter of a meg, providing interlaced content both in bottom field first and top field first interlaced formatting:

https://www.sendspace.com/filegroup/I2yDRXfoc8xEQvUjunir%2Fg

Deinterlacing has not worked since I started using PowerDVD 10, and having reported it faithfully those years ago, it still fails to work to this day. Its entirely beyond me how any media player cant reliably do such a basic feature, let alone one which your company claims in marketing that "your the number 1 media player". Free open source players do this reliably and have done so for many years.