Video buffering verifier
From Wikipedia, the free encyclopedia
The video buffering verifier (VBV) is a theoretical MPEG video buffer used to assess whether a video stream complies with the MPEG standard buffering requirements. By definition, the VBV buffer shall not overflow nor underflow when its input is a compliant stream except the case of low_delay. It is therefore important when encoding such a stream that it comply with the VBV requirements.
The buffer is filled up with a constant rate and emptied in varying chunks depending on the size of the coded frame.
Many popular video encoders support this standard, including Xvid and DivX.
In the H.264 standard, the VBV is called the Coded Picture Buffer (CPB).
[edit] References
 |
This computer-related article is a stub. You can help Wikipedia by expanding it. |
