When I watched the movie Independence Day 2, I was quite impressed with such a scene. The hero and heroine, who are located at the moon base and the earth, called each other through the large screen video.
In the science fiction world, large screen video calls between the moon and the earth have become popular. In real life, people are still accustomed to using the small screen of mobile phones to make video calls. The largest screen in the family, the TV screen, has been idle.
Mobile phones are still the preferred choice for video calls, but they are not perfect.
Due to the portability of the mobile phone itself, the ease of operation of the touch screen and the poor experience on TV, I believe that when starting a spontaneous video call, pulling out the mobile phone is still your first choice.
However, if you keep holding your mobile phone like this, won't your hands hurt?
The following deficiencies exist in the experience of video calls with mobile phones:
1. The hands are tired
2. Shooting angle difference
3. It is difficult to use one machine for multiple purposes
4. Small visual screen
The so-called "every inch has its own shortcomings" can be made up for on TV:
-Free your hands, you can even dance to the TV
-Free choice of camera shooting angle, easy to fix
-The mobile phone is no longer occupied. You can book the location of the online celebrity restaurant you just talked about while chatting
-Large screen, convenient for more family and friends to participate and share
-More people enter the camera, and the TV camera position can cover more people to participate in the video
Large screen video calls have been tepid
Some manufacturers have also tried to promote the application of video calling on their own platforms, but the effect is not satisfactory. The reasons are often summarized as follows:
1. The cost of relationship establishment is high, and the relationship chain is difficult to expand. In order to connect TA with your TV, you must also persuade and guide TA to use smart devices download Another APP, registration, activation, etc;
2. Poor call experience: unable to hear clearly, looking at the card. Audio and video call=audio and video capture+processing+network transmission. These three blocks contain many sub items, and any sub item needs to be explored in depth;
3. Weak cross platform functions, weak video experience across windows/Android/iOS platforms, and uneven compatibility with different systems;
Talk about the video call of Microwhale TV
To provide better video call solutions for WeWhale family users, WeWhale and Tencent Technology launched a new large screen video call solution. From WUI02.02.02.02, WeWhale users can make video calls with family and friends on TV. You don't have to stare at the small screen of your mobile phone, nor worry about your parents' bad eyesight. The scene in the science fiction film will actually take place in your home, so how do we do it? First show the micro whale TV+ QQ System architecture of video call:
Micro Whale TV video call system architecture
Specifically:
1. Reduce use costs and introduce universal social networking Software QQ
With this well-known social software, your existing friendship with your family and friends on QQ can help WeWhale TV establish more direct and convenient contact with its TAs.
QQ video call supported by core technology provided by Tencent Audio Video Lab has the following capabilities:
(Note: Data source http://im.qq.com/album/v/ ）
L720P HD picture
Advanced speed measurement technology and video compression Engine, making the picture reach 720P, meeting the demand of large screen HD display
L Intelligent judgment
Real time judgment of terminal hardware and network conditions, fast adjustment to the optimal image quality, automatic adjustment, no complex settings
L Global network acceleration system
The server covers all corners of the world and intelligently selects the best access point. We have realized the video conversation between students and their families in Singapore in 2017's "New Chinese Singing" program
2017 "China's New Song" student Dong Ziyan and her husband in Singapore made a video call through the micro whale video call function
With Tencent's powerful technical capabilities, common problems (such as packet loss, delay, delay jitter, etc.) that affect the quality of service (QoS) of audio and video real-time communication can be easily solved.
2. Innovate and optimize the audio acquisition mode
Tencent has brought us excellent audio and video real-time communication capabilities, while Microwhale has made optimization and innovation in audio acquisition. So, how to give the micro whale TV a keen ear?
In the traditional TV audio and video capture scheme, the pickup relies on the microphone provided by the camera. However, this way of using video calls has encountered great challenges. Because in the video call scene, the camera is usually mounted above the TV (far away from the user), and the microphone of the camera lacks the ability of long-distance directional pickup. It will also generate a large amount of sound broadcast by the TV itself. As a result, most of the sounds collected by the camera microphone are "sniffy" and "vague", affecting the video experience.
What should I do?
Since the microphone using the camera has "hard injury", can we find a better alternative?
After fully matching the user's usage habits, Microwhale's siege lions magically turned the remote control into a microphone! One machine for multiple purposes.
As a more powerful remote control, Microwhale Bluetooth voice remote control Plus can not only control TV and voice search, but also act as a microphone in video call and other application scenarios. Even better, the remote control is right beside you, on the tea table (as shown in the figure below), and beside the sofa. Speech acquisition becomes easy and clear.
caption It becomes a new difficulty to ensure the transmission quality of voice from the Bluetooth remote control to the TV terminal.
But it is not difficult for the attacking lions to pass:
L Deep customization of transport protocol
L Robust speech algorithm
L Severe test environment (as shown in the figure below)
After a lot of optimization and testing, Microwhale TV has achieved clear and smooth voice when using the Microwhale Bluetooth voice remote control Plus to make video calls within 5 meters from the TV.
summary
In the past, the first sentence of a letter used to be "face to face". Now, with the help of the large screen video call of WeWhale TV, even if it is far away, it seems that relatives are in front of you. All that needs is a USB camera and a Micro Whale Bluetooth voice remote control Plus.
Note:
Applicable model: Microwhale TV 4K model
Software requirements: WUI02.02 and above, open WeWhale App Store to download and install "QQ Video Call"
Accessory 1: Micro Whale Bluetooth voice remote control Plus is preferred to provide clear and smooth voice effect and better call quality.
Accessory 2: USB camera must be equipped. The ordinary camera can only provide "image" input, and the camera with its own microphone can provide "image+voice" input, but the voice effect is ordinary.
