The deterioration in quality which results from cascaded low bit-rate coding is well known. This deterioration can be reduced or eliminated if the coding decisions made by the original encoder are reused for subsequent encoding. This paper describes how these coding decisions can be conveyed using a MOLE signal and how this signal can be used for optimum re-encoding.
https://www.aes.org/e-lib/browse.cfm?elib=8474
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.
Learn more about the AES E-Library
Start a discussion about this paper!