To reproduce:
1. Open the attached project and run it
2. Click "prepare" button and wait for "Prepare completed" event logged in Console
3. Once "Prepare completed" message is logged disconnect your machine from the internet
4. Click "Play". Wait until the video reaches the end of the downloaded buffer and pauses
5. Observe the following error in the console:

WindowsVideoMedia error 0x80072ee7 while reading https://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_30mb.mp4
Context: IMFSourceReader::ReadSample
Error details: <Empty>
Track types:
Unreadable Track

Reproduced: 2017.1.4p2, 2017.2.3p2, 2017.3.2f1, 2017.4.6f1, 2018.1.7f1, 2018.2.0b10, 2018.3.0a3

Note: not reproducible on Mac