At present, there are still many radio and television fields that use traditional cameras instead of network cameras, so there is no way to directly assign IP addresses on the network. Like traditional cameras, the video output is not streaming media, so the data will be huge, which is not suitable for Transmission on the network. Therefore, a video encoder is needed to compress and reduce the video output from this camera to be suitable for network transmission. At the same time, an IP address can be set and it has a streaming function. In selecting an encoder, it is normally determined according to its own application scenario, so there are several parameters that need to be paid attention to when selecting a network encoder.
1. Interface encoder with SDI/HDMI input
Why choose the SDI/HDMI interface? SDI/HDMI are both high-definition interfaces and a serial digital interface for video transmission, based on the Smpte serial link standard.
SDI/HDMI uses the original video data for transmission, without compression, to ensure lossless image quality and true presentation of video content. Since the video signal is not compressed, the video signal can be transmitted in real time without causing image delay.
2. Expand 4G network function, wifi is the basic requirement
Wi-Fi and 4G networks are necessary in the video encoder function. Because in many occasions, if there is no WIFI network, you can use the 4G function, and its network speed can reach ten times to several tens of times the speed of 3G network. It is one of the high-quality new generation wireless broadband communication standards. Features of speed, low latency, and internationalization. It is best to choose to have a built-in dual-band (2.4G/5.8G) wifi module and support USB extension 4G-LTE Dongle, so that various forms of wireless network transmission can be realized.
3. With H.265 encoding function technology
Currently, most webcasting platforms use H.264 coding technology. H.265 high-efficiency video coding is a video compression standard, a new video coding developed after H.264. H.265 (HEVC) technology is considered to not only improve the video quality, but also to achieve twice the compression rate of H.264/MPEG-4 AVC (the bit rate is reduced to 50% under the same picture quality), and it can support 4K resolution even up to Ultra HD TV, the highest resolution can reach 8192×4320 (8 K resolution). Therefore, H.265 technology is used to improve the relationship between code stream, coding quality, delay, and algorithm complexity to achieve optimal settings.
4. Support multi-protocol function (RTMP/RTSP/SRT)
At present, the output of the webcast encoder must support the RTMP/RTSP protocol. RTMP is the standard protocol for the encoder output. Due to the huge PC market, the PC is mainly Windows. Basically, the Windows browser supports flash, and Flash supports the RTMP protocol. , So basically all encoders (cameras and the like) support RTMP output. RTMP has a lower latency than HTTP protocol streaming (usually more than 10 seconds), so there are more general live broadcast applications.
Next, I will focus on the SRT protocol. SRT is a very popular open source low-latency video transmission protocol nowadays. Using SRT reliable transmission technology, it can successfully realize the safe and reliable high-definition video transmission and distribution under the ordinary Internet environment and between multiple places. SRT supports AES encryption to ensure end-to-end video transmission security.
In terms of reliability, SRT uses forward correction technology (FEC) to ensure the stability of transmission.
In terms of low latency, because SRT is built on top of UDT protocol, it solves the problem of high transmission delay of UDT protocol. The UDT protocol is based on the UDP network communication protocol. SRT solves the problem of complex transmission timing and can support the real-time transmission of high-throughput files and ultra-definition video. Therefore, many radio and television live broadcast industries are willing to choose to support SRT protocol encoders.
|
|
|
|
How far(long) the transmitter cover?
The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.
EXAMPLE 5W FM Transmitter use in the city and hometown:
I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).
I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).
I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).
Below are the approximate range of different power FM Transmitters. ( The range is diameter )
0.1W ~ 5W FM Transmitter ：100M ~1KM
5W ~15W FM Ttransmitter : 1KM ~ 3KM
15W ~ 80W FM Transmitter : 3KM ~10KM
80W ~500W FM Transmitter : 10KM ~30KM
500W ~1000W FM Transmitter : 30KM ~ 50KM
1KW ~ 2KW FM Transmitter : 50KM ~100KM
2KW ~5KW FM Transmitter : 100KM ~150KM
5KW ~10KW FM Transmitter : 150KM ~200KM
How to contact us for the transmitter?
Call me +8618078869184 OR
Email me [email protected]
1.How far you want to cover in diameter ?
2.How tall of you tower ?
3.Where are you from ?
And we will give you more professional advice.
About Us
FMUSER.ORG is a system integration company focusing on RF wireless transmission / studio video audio equipment / streaming and data processing .We are providing everything from advice and consultancy through rack integration to installation, commissioning and training.
We offer FM Transmitter, Analog TV Transmitter, Digital TV transmitter, VHF UHF Transmitter, Antennas, Coaxial Cable Connectors, STL, On Air Processing, Broadcast Products for the Studio, RF Signal Monitoring, RDS Encoders, Audio Processors and Remote Site Control Units, IPTV Products, Video / Audio Encoder / Decoder, designed to meet the needs of both large international broadcast networks and small private stations alike.
Our solution has FM Radio Station / Analog TV Station / Digital TV Station / Audio Video Studio Equipment / Studio Transmitter Link / Transmitter Telemetry System / Hotel TV System / IPTV Live Broadcasting / Streaming Live Broadcast / Video Conference / CATV Broadcasting system.
We are using advanced technology products for all the systems, because we know the high reliability and high performance are so important for the system and solution . At the same time we also have to make sure our products system with a very reasonable price.
We have customers of public and commercial broadcasters, telecom operators and regulation authorities , and we also offer solution and products to many hundreds of smaller, local and community broadcasters .
FMUSER.ORG has been exporting more than 15 years and have clients all over the world. With 13 years experience in this field ,we have a professional team to solve customer's all kinds of problems. We dedicated in supplying the extremely reasonable pricing of professional products & services. Contact email : [email protected]
Our Factory
We have modernization of the factory . You are welcome to visit our factory when you come to China.
At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office . If you come to China , you are welcome to visit us .
At Fair
This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together.
Where is Fmuser ?
You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office .
FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway station, xiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate .
Contact: Sky Blue
Cellphone: +8618078869184
WhatsApp: +8618078869184
Wechat: +8618078869184
E-mail: [email protected]
QQ: 727926717
Skype: sky198710021
Address: No.305 Room HuiLan Building No.273 Huanpu Road Guangzhou China Zip:510620
|
|
|
|
English: We accept all payments , such as PayPal, Credit Card, Western Union, Alipay, Money Bookers, T/T, LC, DP, DA, OA, Payoneer, If you have any question , please contact me [email protected] or WhatsApp +8618078869184
-
PayPal.  www.paypal.com
We recommend you use Paypal to buy our items ,The Paypal is a secure way to buy on internet .
Every of our item list page bottom on top have a paypal logo to pay.
Credit Card.If you do not have paypal,but you have credit card,you also can click the Yellow PayPal button to pay with your credit card.
---------------------------------------------------------------------
But if you have not a credit card and not have a paypal account or difficult to got a paypal accout ,You can use the following:
Western Union.  www.westernunion.com
Pay by Western Union to me :
First name/Given name: Yingfeng
Last name/Surname/ Family name: Zhang
Full name: Yingfeng Zhang
Country: China
City: Guangzhou
|
---------------------------------------------------------------------
T/T . Pay by T/T (wire transfer/ Telegraphic Transfer/ Bank Transfer)
First BANK INFORMATION (COMPANY ACCOUNT):
SWIFT BIC: BKCHHKHHXXX
Bank name: BANK OF CHINA (HONG KONG) LIMITED, HONG KONG
Bank Address: BANK OF CHINA TOWER, 1 GARDEN ROAD, CENTRAL, HONG KONG
BANK CODE: 012
Account Name : FMUSER INTERNATIONAL GROUP LIMITED
Account NO. : 012-676-2-007855-0
---------------------------------------------------------------------
Second BANK INFORMATION (COMPANY ACCOUNT):
Beneficiary: Fmuser International Group Inc
Account Number: 44050158090900000337
Beneficiary's Bank: China Construction Bank Guangdong Branch
SWIFT Code: PCBCCNBJGDX
Address: NO.553 Tianhe Road, Guangzhou, Guangdong,Tianhe District, China
**Note: When you transfer money to our bank account, please DO NOT write anything in the remark area, otherwise we won't be able to receive the payment due to government policy on international trade business.
|
|
|
|
* It will be sent in 1-2 working days when payment clear.
* We will send it to your paypal address. If you want to change address, please send your correct address and phone number to my email [email protected]
* If the packages is below 2kg,we will be shipped via post airmail, it will take about 15-25days to your hand.
If the package is more than 2kg,we will ship via EMS , DHL , UPS, Fedex fast express delivery,it will take about 7~15days to your hand.
If the package more than 100kg , we will send via DHL or air freight. It will take about 3~7days to your hand.
All the packages are form China guangzhou.
* Package will be sent as a "gift" and declear as less as possible,buyer don't need to pay for "TAX".
* After ship, we will send you an E-mail and give you the tracking number.
|
|
|
For Warranty .
Contact US--->>Return the item to us--->>Receive and send another replace .
Name: Liu xiaoxia
Address: 305Fang HuiLanGe HuangPuDaDaoXi 273Hao TianHeQu Guangzhou China.
ZIP:510620
Phone: +8618078869184
Please return to this address and write your paypal address,name,problem on note: |
|
