Plz update for iOS 15.4
I REALLY need this app works😭😭😭
Great
This is exactly what I was looking for, a calculator that would convert video bit rates to file sizes. Unfortunately the app won’t work in future OSes unless the dev updates it.

Archived App
This is an archived listing of the app previously available on the App Store.Calculate bitrate, file size, and time length using various formulas. Convert between SI and binary prefixes for file sizes. Useful for estimating transfer times, data usage, and encoding parameters.
1.0.0
July 20, 2014
Bitrate Calc allows you to calculate bitrate, file size, and time length by inputting any two of these values. It also includes a converter for SI and binary file size prefixes.
For file sizes, Bitrate Calc supports both SI prefixes (KB, MB, GB) and binary prefixes (KiB, MiB, GiB). This allows for accurate conversions, as Windows' 'KB' is equivalent to Bitrate Calc's 'KiB'.
You can use Bitrate Calc to estimate how long it will take to back up data, how much data a video stream will consume, or the maximum bitrate for encoding a video of a specific size and duration.
Yes, Bitrate Calc is supported on iPhone, iPad, and iPod, making it accessible for users across Apple's mobile ecosystem.
Bitrate Calc was last updated on July 20, 2014, with version 1.0.0. The initial release date was also July 20, 2014.
Bitrate Calc has an age rating of 4+, making it suitable for a wide range of users.
The provided data does not specify whether Bitrate Calc contains advertisements. However, it is listed as free with no in-app purchases.
Bitrate Calc has received excellent user feedback, holding a rating of 5.0 stars from 3 ratings.