Review the cut on the client's TV, not a download link

The 90-second spot is done. Instead of exporting a watermarked MP4 and emailing a link, you send a display URL: ?readonly=true&toolbar=false&decorations=false&encoding=h264&sharing=true&steal=false. The client opens it on the TV in their conference room. The editing suite is running in the container with the timeline up. You press play from your desk, and the TV shows the cut at full resolution, straight from the timeline.

They ask for the logo to hold two frames longer. You drag the clip while they watch; the change is on their screen as you make it. No re-export, no version three of the file, no "which link is the latest."

When they approve, you export the final. Until then there is no file to leak, forward, or lose: the edit is running, not rendered.

The client doesn't review a render of the edit. They watch the edit.