That seems like a reasonable approach. I’m not quite sure what your feature is doing exactly though.
By start time of the second VOD, do you mean the created_at time for it? All VODs start at 00:00:00, irregardless of where they would be at in the continuation of the first VOD. Or do you mean that if the first VOD was 45 minutes, it would tell the user the second VOD is “at 45 minutes” past the first VOD?
Either way, I think you should have enough information to do what you want, though again need to reiterate that these fields meanings could be altered depending on our backend changes to VODs/etc.