H.265/H.264 HD Encoder 4k NDS3224V
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”.
NDS3224V H.265 HEVC H.264 HD Encoder
Technical specification
| Input | 4/8/12×HD-SDI or HDMI (1.4) inputs for option, HDCP 1.4 | ||||
| Video
Encoding |
Encoding Format | HEVC/ H.265 , MPEG 4 AVC/H.264 | |||
| Resolution (HDMI V1, and SDI) |
Input |
Output |
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| HEVC/H.265 | MPEG-4 AVC/H.264 | ||||
| 4*1080P-50 | 4*1080P-50 | 2*1080P-50 | |||
| 4*1080P-60 | 4*1080P-60 | 2*1080P-60 | |||
| 4*1080I-50 | 4*1080P-50 | 4*1080I-50
2*1080P-50 |
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| 4*1080I-60 | 4*1080P-60 | 4*1080I-60
2*1080P-60 |
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| 4*720P-50 | 4*720P-50 | 4*720P-50 | |||
| 4*720P-60 | 4*720P-60 | 4*720P-60 | |||
|
Resolution (HDMI V2) |
3840×2160_30P, 3840×2160_29.97P
(Encoding 2 CHs per module for H.265, and encoding 1 CH for H.264 ) 1920×1080_60P,1920×1080_59.94P,1920×1080_50P, (Encoding 4 CHs per module for H.265, and encoding 2 CHs for H.264) 1280×720_60P, 1280×720_59.94P, 1280×720_50P (Encoding 4 CHs per module for H.264 and H.265) |
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| Chroma | 4:2:0 | ||||
| Bitrate | 0.5Mbps~20Mbps (each channel) | ||||
| Rate Control | CBR/VBR | ||||
| GOP Structure | IBBP, IPPP | ||||
| Advanced Pretreatment | 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 | ||||
| Bit-rate (each channel) | 48Kbps~384Kbps (MPEG-1 Layer 2 & LC-AAC)
24 Kbps~128 Kbps (HE-AAC) 18 Kbps~56 Kbps (HE-AAC V2) |
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| Audio Gain | 0~255 | ||||
| Stream output | IP (1 MPTS and maximum 4 SPTS) output over UDP/RTP/RTSP per module, 1000M/100M Base-T Ethernet interface (unicast/ multicast); IPv4, IPv6 output
IP null packet filter |
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| System | Web based management | ||||
| Chinese-English control interface | |||||
| Ethernet software upgrade | |||||
| Miscellaneous | Dimension (W× L× H) | 482mm×328mm×44mm | |||
| Approx weight | 5kg | ||||
| Temperature | 0~45℃(work), -20~80℃（Storage） | ||||
| Power | AC 100V-220V±10%, 50/60Hz | ||||
Order Guide
|
NDS3224V HDMI V1 |
NDS3224V HDMI V2 |
NDS3224V SDI |
|
|
Input |
4/8/12 HDMI |
4/8/12 HDMI |
4/8/12 SDI |
|
Resolution |
1080p, 1080i, 720p |
4K-30p, 1080p, 720p |
1080p, 1080i, 720p |
|
OSD (logo/QR code) Insertion Function |
support |
N/A |
optional |
Dexin HEVC/H.265 encoder’s advantages
1. Providing smooth TS for modulators
Dexin 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.
2. 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 |
7:1 |
|
P |
6 |
20:1 |
|
B |
2.5 |
50:1 |
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”.
How to check the GOP structure of the stream from an Encoder?
Please click the link below:
https://my.pcloud.com/publink/show?code=kZQNHW7ZnJBopqRQCchwqS1surdtnmd6cIjk
