Uploading a video counts against the preview playtime limit:

Every time we complete processing a video you have uploaded, the live action playtime of that video is counted against your preview playtime limit within the accounting period applicable for the account you have subscribed for.

Downloading a motion capture file counts against the download playtime limit:

We do not count the live action playtime of a processed video against your download playtime limit, unless you download the motion capture file for the results we have produced.

Every first time you initiate a download of a motion capture file for the results we have produced (but not on subsequent downloads in respect of the same scan), the live action playtime of that video is counted against your download playtime limit within the accounting period applicable for the account you have subscribed for.