All Input 1 Video 8 Audio MPEG2/MPEG4 4:2:2:2 Encoder 608/708 Captioning 

Description

Thor MPEG-2/H.264 HD Encoder is the new broadcasting audio & video encoding and multiplexing device with powerful functionality. It has multiple video input interfaces (SDI, CVBS, YPbPr and HDMI) and 4 audio input interfaces (AES, RCA and XLR). It supports 4 stereo (8 mono) audios embedded to mix with the video to form a stream output. The encoded program outputs as a TS 9transport Stream) through ASI/IP port in the same time.

https://www.satellitedish.com/H-MPEG2-H264-E2.pdf