Safari Downloads YouTube Hex on Init

[ghost]

4357 5311 f91f 0000 78da 8d59 697b db46 7ec7 80c7 9094 a883 b665 5bb6 d7f2 9d38 b004 1eba bc51 1259 9613 39b6 e548 76e2 24ab 4020 3020 61e1 a001 9012 d363 ddb4 e9b1 db76 7b6e efbb bbbd be40 dff5 2bd0 cef3 38af faa6 aff6 1bf4 65fa 9b01 2991

This is a sample of a file that is generated when I load my web application using Safari. The files are roughly 4kb in size, and are named after the YouTube id being initialized. Does anyone know what these files are and why Safari downloads them automatically when I refresh my application?

Edit: This error was the culprit: 'Failed to load resource: Frame load interrupted'. It wasn't a result of angular-youtube-embed, it was due to a preview I had in an secondary iframe. I solved the issue by changing /v/ to /embed/. I hope I may have helped somebody else.