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The same this is happening in the academics.

The take away is some people like downloading apps so if you can it might be a good idea to be effective with your time a design a code base that can be appified using tools such as electron. It's best to have as little code as is possible. This isn't to say don't write code, don't create anything because there will be some problems with it. Instead create as small a code base as you can while delivering the best possible experience.

Existing encoders have suported this for ages using multipass. In the first pass of multipass encoding, the input data from the source clip is analyzed and stored in a log file. In the second pass, the collected data from the first pass is used to achieve the best encoding quality. In video encoding, two-pass encoding is usually controlled by the average bitrate setting or by the bitrate range setting (minimal and maximal allowed bitrate) or by the target video file size setting.

The best way to understand why this is used is to think of a movie — when there are shots that are totally, absolutely black, like scene changes, normal 1-pass CBR encoding uses the exact same amount of data to that part as it uses for complex action scene. But by using VBR and multipass, encoder “knows” that this piece is OK with lower bitrate and that bitrate can be then used for more complex scenes, thus creating better quality for those scenes that require more bitrate.