1 how good it is. VP8？ Can this file format be better than H.264 in terms of compression? And an excellent VP8 encoder can beat x264? On2 claims that VP8 is 50% better than H.264, but On2 often makes such absurd statements that they can't provide valid evidence themselves, so such figures can almost be concluded to be incorrect. For example, VP7 was once considered to be better than H.264 15% and much faster, but in fact, its quality is neither better nor faster than H.264. ..
2. How about the VP8 implementation of 2.ON2? It has nothing to do with how good the standard itself is, which means whether the specific implementation is excellent, or whether the VP8 implementation of On2 will release a poor implementation that can't be used at all, like VP3, and pin its hopes on the developer community to correct it. Let's pray VP8 doesn't do this. Theora's repair took six years!
3. What is the real possibility of patent-free VP8? Even though VP8 is worse than H.264, patent-free is obviously a very useful feature. But as I mentioned in my last article, Google's statement does not guarantee that it is patent-free. Microsoft did something similar when it released VC- 1 a few years ago, but a few months after its release, a bunch of companies kept applying for patents on it, and it wasn't long before the number of patents was enough to form a patent pool.
We analyze the core features of VP8. We mainly analyze it by comparing with the existing video formats. Remember, encoders and standards are two different things. It is entirely possible that a good encoder is based on a bad standard, and vice versa. This is why a very good MPEG- 1 encoder can beat a bad H.264 encoder.
Encoder: prediction->; Transform+quantization->; Entropy coding->; Blocking filtration
Decoder: entropy decoding->; Forecast-> Inverse quantization+inverse transform->; Blocking filtration