B frames

[SaurabhPrajapati]

What is B frames? And how can I use it to improve my video quality?

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Glossary / Terminology

Alpha channel An alpha channel is a part of the image data that describes each pixel’s level of opacity or translucency. Contrast that with the other data, which describes light and color. Many people think of an alpha channel as a transparency mask. However, that can lead one to think of it as rather binary - opaque or transparent - whereas most often an alpha channel has at least 256 levels. Aspect ratio Aspect ratio is how the width of a rectangle compares with its height. In other words…

Video compression is a complicated subject. You would do well to do some general study instead of asking several very targeted questions. Here is an article I recommend, and its author is a popular expert and has many resources on the subject including a book called Video Encoding By the Numbers.

Beginner’s Guide to Encoding H.264 - Streaming Learning Center