EMU-9500
Preliminary
UHD Encoder 4Kp30 HEVC
EMU-9500 Family Encoder Streamer
Technical specification EMU-9504 /08 /12
| Input | 4/8/12 HDMI (1.4) inputs | ||
| Video Encoding | Encoding Format | HEVC/ H.265 or MPEG 4 AVC/H.264 | |
| Resolution | UHD 3840×2160-30P, 3840×2160-29.97P; Limitation: (Encoding 2 CH per module for H.265, and encoding 1 CH for H.264) 1920×1080-60P,1920×1080-59.94P,1920×1080-50P, (Encoding 4 CH per module for H.265, and encoding 2 CH for H.264) 1280×720-60P, 1280×720-59.94P, 1280×720-50P (Encoding 4 CH per module for H.264 and H.265) | ||
| Chroma | 4:2:0 | ||
| Bitrate | 0.5Mbps…20Mbps (each channel) | ||
| Rate Control | CBR/VBR | ||
| GOP Structure | IBBP, IPPP | ||
| Advanced picture correction | De-interlacing, Noise Reduction, Sharpening | ||
| Audio Encoding | Encoding Format | MPEG-1 Layer 2, LC-AAC, HE-AAC, HE-AAC V2, AC3 Passthrough | |
| Sampling rate | 48KHz | ||
| Bitrate (for each channel) | 48Kbps…384Kbps (MPEG-1 Layer 2 & LC-AAC) 24 Kbps…128 Kbps (HE-AAC) 18 Kbps…56 Kbps (HE-AAC V2) | ||
| Audio Gain | 0…255 adjustable | ||
| Stream Output | IP (1 MPTS and maximum 4 SPTS per Module) output over UDP/RTP/RTSP, 1000M/100M Base-T Ethernet interface (unicast/ multicast); IPv4, IPv6 output; IP null packet filter | ||
| System | Web based management in English | ||
| Firmware upgrade by Web-IF | |||
| Miscellaneous | Dimension (W× L× H) | 482mm×328mm×44mm | |
| Weight | Ca. 5kg | ||
| Temperature range | 0…45℃ (operation), -20…80 (in Storage） | ||
| Power | AC 100V-220V±10%, 50/60Hz | ||
HEVC/H.265 encoder advantages
- Providing smooth TS for IPTV and modulators
HEVC/H.265 encoder adopts Fujitsu chip which offers stable bitrate with lower fluctuation compared with other encoding chips, so it provides smooth TS for modulators. It is widely used in variety of digital distribution systems such as CATV digital head-end, satellite and terrestrial digital TV, etc. - Encoding with highest compression format—B frame (IBBP) What is B Frame?
There are 3 major picture types used in the different video algorithms, they are I, P and B.
They are different in the following characteristics:
I frames are the least compressible but don’t require other video frames to decode.
P frames can use data from previous frames to decompress and are more compressible than I frames.
B frames can use both previous and forward frames for data reference to get the highest amount of data compression.
| Frame Type | Byte of data/KB | Compression Ratio |
| I | 18 | 7:01 |
| P | 6 | 20:01 |
| B | 2.5 | 50:01:00 |
In one word, B frame is the highest compression format which makes it possible to process HD video at low bit rate.
HEVC/H.265 encoder is not able to save bandwidth unless it is with B frame. In encoder parameters, B frame is often described in GOP (Group of Pictures) structure, like “IBBP”.
