Currently there is no way of passing [sync window](https://github.com/gdavila/easyVmaf#syncing-reference-video-delayed-in-regard-with-the-first-frame-of-distorted-one) and [sync start time](https://github.com/gdavila/easyVmaf#syncing-distorted-video-delayed-in-regard-with-the-first-frame-of-reference-one) to easyvmaf. We should add this functionality.
Currently there is no way of passing sync window and sync start time to easyvmaf. We should add this functionality.