Minimum Maximum slider – Usability best practice

I'm developing an iOS mobile app for slowing down/speeding up videos. After some research and intuition I've decided to choose a Slider as the responsible UI component for the video speed change. The video speed range is between 16x slower to 16x fast than original speed.

Naturally, the leftist side on the Slider should be the slowest, and the rightest side should be the fastest.

Than I've noticed something interesting, when using the standard Slider of iOS, where the thumb starts from the leftist side (minimum value), and the maximum value is the rightest side. It's gives a "bad" connotation to the left side, where a positive connotation to the right side. Plus, it was a bit confusing, either i'm on the slowed down part or the speed up part.

Example:

Than I've decided to change things a bit. I've decided to place the origin of the Slider at the center. The center stands for "original speed". dragging left will focus only on slowing down, where dragging right focus on speeding up. Same example above with the new version:

I feel like it's still lacking of usability. Maybe adding indicators next to the center origin? Would love to hear your thoughts and ideas. thank you for reading!