Keeping Video Quality Pristine throughout the Production Process: Introducing 10-bit 4:2:2 AVC/H.264 encoding

摘要

This paper discusses how using the 10-bit 4:2:2 AVC/H.264 encoding profile for transmission can maintain quality throughout the production process workflow. Upto now an MPEG-2 4:2:2 8-bit profile was used, the new AVC/H.264 encoding profile will allow for significantly lower transmission bandwidth or higher quality for the same transmission links. The profile is also compatible with pre-existing native SDI signal infrastructures used already in production processes. Furthermore 4:2:2 10-bit processing can help to preserve quality during multi-generation encodes/decodes that can happen often in the production process. This paper presents empirical results using real-time implementations to demonstrate the advantages of using this profile. Examples are also presented where this new technology can assist in production workflows ranging from remote uplinks of live broadcasts, non-collocated collaboration of dailies, support of playout-to-tape infrastructures, to international distribution & editing of content.