Video codecs utilize different frame types for compression: I-frames are complete images, P-frames are predicted from previous frames, and B-frames can depend on future frames. This predictive nature, especially with B-frames, means the decoding order differs from the display order, requiring sophisticated encoding logic. ProRes is an example of an intra-only codec using only I-frames.
Impact: High. Explains the fundamental building blocks of video compression, demystifying how frames are stored and predicted to reduce data size.
In the source video, this keypoint occurs from 03:04:52 to 03:07:53.
Sources in support: Jean-Baptiste Kempf (Lead Developer of VLC, President of VideoLAN)

