Cisco D9054 Encoder. The Cisco D9054 Encoder is the right choice for any operator who wants to compress high-definition video using MPEG-4 Part 10 compression technology. PreSightPlus pre-analysis, dual-pass technology and single-slice architecture, efficiently helps utilize the scarce bandwidth resources in distribution systems and provide excellent picture quality. The encorder offers AVC encoding for various distribution and contribution applications, supporting 1080i and 720p. Based on a dedicated encoder resource, the D9054 Encoder optionally supports picture-in-picture (PIP) functionality for convenient channel change and mosaic applications. The D9054 Encoder supports multiple audio formats, MPEG-1 Layer II audio, Dolby Digital (AC-3) audio, Dolby Digital Plus (AC-3) audio, AAC audio, pass through of pre-encoded audio, with a broad range of bit rates. Up to six stereo audio pairs or as many as two 5.1 audio channels can be supported depending on the audio format.