Overview
The DDMALL HEC-20 is a wireless 4K HDMI encoder supporting seamless AP roaming in the LAN without interrupting video transmission, while the HDD-20W is a 4K wireless HDMI video decoder for IP stream decoding. With built-in 5G+2.4G Wifi anntenas, both the encoder and decoder are empowered with strong wireless network connection. they are feafure in mini form factors and low power consumption, with USB connection, streaming without cable issue. The streaming encoder supports HDMI input in 2160p@30Hz, encoding output in 2160p@30Hz, and HDMI loopout in 2160p@30Hz at most; while the HDMI decoder support IP stream input in 2160p@60Hz, and decoding HDMI output in 2160p60Hz at most.
The HEC-20 Parameters
| General |
| Power Supply | 5V/1 A （USB cable powered） |
| Power Consumption | 3.4W |
| Operating Temperature | -10~55℃ （14~149℉） |
| Storage Temperature | -20~85℃ （-4~185℉） |
| Operating Humidity | 10%- 90%RH (Non-condensing) |
| Weight | 46.4g/0.102lbs |
| Dimension (L*W*H) | 110.2×38.4×18.45mm/ 4.34×1.52× 0.73in |
| MTBF | 30,000H |
| Video |
| Input Standard | HDMI 1.4A |
| Video Codec | H.265/HEVC and H.264/AVC |
| Supported Protocols | SRT, HLS, RTP, RTSP, RTMP, RTMPS, UDP, TCP, Low Latency, Multicast and Unicast. |
| Supported Input Resolution | 2160p@30/25/24Hz, 1080p@60/50/30/25/24/23Hz, 720p@60/50/30Hz |
| Supported Local Loop-Out | 2160p@30/25/24Hz, 1080p@60/50/30Hz, 720p@60/50/30Hz, 960×720@60/50/30Hz, 960×540@60/50/30Hz, 640×480@60/50/30Hz, 360×200@60/50/30Hz. |
| Supported Output Resolution |
2160p@30/25/24Hz, 1080p@60/50/30Hz, 720p@60/50/30Hz, 960×720@60/50/30Hz, 960×540@60/50/30Hz, 640×480@60/50/30Hz, 360×200@60/50/30Hz. The frame rate can be selected by yourself. The primary stream supports a maximum of 3840*2160@30Hz， secondary stream supports a maximum of 1080p@60Hz |
| Video Bitrate |
128Kbps~64Mbps |
| Audio |
| Input Standard | HDMI |
| Audio Encoding Format | G.711u, AAC |
| Audio Bitrate | 32kbps~256Kbps |
| System |
| Wireless Standard | 802.11a/n/ac 5G，802.11b/g/n 2.4G |
| Control Method | Web UI |
| AP Mode Wi-Fi Info | SSID：HED4KW；password：12345678 |
| AP Mode Default IP | 192.168.1.252 |
| Default Web UI Login Credentials | user/password: admin/admin |
| GOP | Tunable |
| Compression Profile | BaseLine, Main, High |
The HDD-20W Parameters
| Power Supply | 5V/1 A （USB cable powered ) | Power Consumption | 2.6W |
| Work Temperature | 10~65℃ （14~149℉） | Storage Temperature | -20~85℃ （-4~185℉） |
| Work Humidity | 10%- 90%RH (Non-condensing) | Product Weight | 25g/0.055lbs |
| Product Dimension | 75x32x15mm/2.95x1.26x0.59in | MTBF(mean time between failures) | 30,000h |
| Video Input Standard | HDMI 2.0 | Video Codec | H.265/HEVC and H.264/AVC |
| Supported Protocols | RTSP, ONVIF, UDP, TCP, | Supported Output Resolution |
3840*2160p@60/50/30/25/24Hz, 1920*1080p@60/50/30/25/24Hz, 1920*1080i@60/50Hz, 1280*720p@60/50Hz |
| Supported Stream Input Resolution |
3840*2160@60/30Hz,1920*1080p@60/30Hz, 1280*720p@60/30Hz |
Audio Input Standard | HDMI embedded audio input, 3.5mm analog |
| Audio Encoding Format |
G.711u, AAC |
Compression Profile | BaseLine, Main, High |
| Control Method |
Web UI |