Clarify question: 

horizontal time scroll of the video letting users to move forward or backward to a specific timestamp. Ideally the user wants to preview the thumbnails as they scroll along

Is this feedback for all videos or specifically for longer videos (>4 mins) ?

Understand if this aligns with company mission/growing trends/competition:

Tiktok’s mission is to inspire creativity and bring joy, by empowering everyone to become creators and share their experiences with users all over the world.

user feedback seeks to address a possible painpoint – for repeat users, and for longer videos.

This is especially useful for Tiktok’s ambitions to enable creators with both short and longer videos to become easily consumable.

Clearly users are spending more and more time watching video either on Tiktok or on Youtube, and it positions Tiktok well if it makes it easier to consumer longer form videos from creators like exercise session, cooking session etc.

Experiment (A/B test):

Outcomes that i’m interested in:

More users watch longer videos

User watches more longer videos than before.

Users are able to jump easily to longer videos and hence watch it more than once

Metrics to track:

Previously longer videos may have been watched for more time trying to get to the exact point in video. But people may find it frustrating and stop watching longer videos. So time spent may not be the right metric to track. Instead we want the # of users who watch longer videos to increase as well as # of longer videos watched per user, # of longer videos watched more than once per user (to test for the hypthesis that repeat users find scrubbing useful), and time spent scrubbing.

Run this experiment on subset of users (sampleset distributed among high freq, avg and low freq users of the platform) within a specific geo

Will decide based on the metrics.