What is video resolution? What are the mainstream video resolutions? How to choose correctly?
1. What are the mainstream resolutions of mobile phone devices?
Pixels are the biggest selling point that many mobile phone manufacturers use to promote the performance of mobile phones. In 2019, the mainstream mobile phone camera resolution on the market has 40 million pixels, 20 million pixels, 16 million pixels, and 12 million pixels. Do these resolutions make sense for video shooting? The answer is yes, but it's not that the higher the pixel of the phone, the clearer the video. The definition index of video is called resolution, and the mainstream resolution includes 4K, 1080p Full HD, and 720p HD.
2. How to choose the device resolution correctly?
4K is the highest resolution video that can be shot by mobile phones at present, with horizontal clarity of 3840 pixels, vertical clarity of 2160 pixels, about 8.3 million pixels, and an aspect ratio of 16:9. This resolution has a very high resolution, the resolution is equivalent to 4 times of 1080p, if the use of 4K resolution when shooting, the use of 1080p Full HD resolution when post-output, then in the post-editing video, the video cropping will not affect the clarity of the video, so it is recommended that the creators with large mobile phone capacity and strong computer performance use 4K resolution to shoot.
1080p is the mainstream resolution for mobile phone shooting and network sharing, with horizontal clarity of 1920 pixels, vertical clarity of 1080 pixels, about 2.07 million pixels, and an aspect ratio of 16:9. If the photographer's mobile phone capacity is not large, the video will not be re-cropned when editing, and it is completely possible to shoot in 1080p Full HD resolution. In terms of current storage costs and computer performance, it is recommended that creators shoot at 1080p Full HD resolution.
Some phones also have 720p HD video format options, with horizontal clarity of 1280 pixels and vertical clarity of 720 pixels, about 920,000 pixels. This clarity can only be used as a picture-in-picture when editing a video in post, or for recording videos that do not require detail, so it is not recommended that photographers use this format when shooting works.
Through the above introduction, it is not difficult to find that in order to shoot 4K resolution video, the mobile phone only needs about 8.3 million pixels. Considering that the aspect ratio of the video is 16:9 and the aspect ratio of the photo is 4:3, it only takes 12 million pixels to shoot a video sensor with 4K resolution, which is why the iPhone's flagship phone, the iPhone XS Max, only has 12 million pixels. Because the shooting algorithms of mobile phones of various manufacturers are different, the expressiveness of higher pixel mobile phones when shooting 4K resolution videos is also different.
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