Hardware Product Introduction That May Be Involved In The Live Video System

Hardware product introduction that may be involved in the live video system

Hardware products that may be involved in the live video system:

1. camera / camera, etc., live video broadcast required, according to their own needs, budget, etc., choose the audio and video capture front end for you.

2. demodulator, set-top box (required for live TV)

If the original signal is a cable television (RF) signal, it is generally recommended to use a radio frequency demodulator. If it is necessary to synchronously demodulate the AV signals of multiple TV channels, it is recommended to use a professional multi-channel RF demodulator with stable operation and convenient construction.

When receiving live video on a TV or monitor, you need to go to the set-top box. When you select the set-top box, you need to follow the decoding capability of the set-top box (the audio and video format that can be decoded) and the supported network protocols.

If the original TV signal is digital TV, if the TV is broadcast live, a digital set-top box is needed. A digital set-top box generally demodulates an AV signal, provides a video source for broadcasting a channel TV, and a digital TV set-top box. It is generally recommended to select a large manufacturer.

3. video capture card

At present, there are quite a lot of audio and video capture cards left in the market. In order to have a versatility or to facilitate future expansion, it is recommended to select a compatible acquisition card, so that it can be used for live video or non-linear editing system. Card use.

4. professional non-standard acquisition card (such as VGA capture card)

In order to collect special video signals, a professional video capture card is needed. For example, in order to broadcast a game, the player's computer screen can be collected in real time through a VGA capture card, and the game can be broadcast live through the live broadcast software.

Commonly used VGA capture cards are:

5. video switcher

There are many possible live broadcast scenarios. Switch the scene as needed. At this time, the video switcher should be used. The quality of the video switcher will directly affect the quality of the live broadcast. The good switcher works fine and the materials used are better. From the appearance, you can have a preliminary judgment.

6. professional encoder (multi-channel live broadcast, such as live TV)

Group, type users such as campus, government, and enterprises often need to build network TV stations. Because of the live broadcast involving multiple channels, it is very inconvenient to use traditional capture card + software. It is difficult to broadcast multiple channels at the same time. TV channels, in this case, it is recommended to use multi-channel video encoding equipment.

7. the audio matrix

For multiple sound source inputs, select the specified output, you may use the audio matrix. When selecting the audio matrix, pay attention to its input and output parameters, and select the parameters of the acquired acquisition card.

8. audio and video lines, converters

Don't underestimate these gadgets. This is the first condition for the live video broadcast. It is recommended to use the audio and video cable with good quality from the regular manufacturer, and consider that there is signal attenuation, it is not easy to be too long; try to use the conversion head as little as possible. When you use it, you have to choose a good one. It is best to choose a copper core. It looks like the brightness is good. It is in the hand and has the feel of the hand.

9. microphone, echo suppressor

In the live broadcast, the microphone and the echo suppressor should be used. The directional microphone or the microphone capable of collecting the sound of the entire venue should be selected according to the situation. When the echo is too large according to the situation, the echo suppressor can also be used.