Traditional Culture Encyclopedia - Photography and portraiture - What is video frame extraction?
What is video frame extraction?
The effect of video frame extraction is often confused with time-lapse photography and low-speed photography. The difference between them is that time-lapse photography is a method of taking pictures, low-speed photography is a method of taking videos, and frame extraction is a means of later video.
Time-lapse photography is essentially an exposure at a certain time interval, and the images formed by each exposure are superimposed (synthesized) on the same picture. If it is a film machine, it is a negative that has been exposed many times at the same time interval.
Extended data:
Each video will form a frame number before frame extraction. The frame number of video is the number of pictures transmitted by 1 sec, which can also be understood as how many times the graphics processor can refresh every second, usually expressed by fps (frames per second).
Every frame is a still image, and the illusion of motion is formed by displaying frames quickly and continuously. High frame rate can get smoother and more realistic animation. The more frames per second (fps), the smoother the motion display. But the bigger the file will get.
So when you see "30 frames" in the parameters, it is actually "taking 30 still pictures a second and then connecting them by playing".
Design and Implementation of Panoramic Mosaic System of People's Network -360-degree Video Sequence
- Previous article:What does micro-single dog head mean?
- Next article:What is the number of LUTs provided by Panasonic for free?
- Related articles
- What are the top ten musical talents recognized by China music circle?
- Dong Xi's Daoke Poetry Exhibition
- How to take close-up photos
- The cast list of Chef Xiao Bing.
- Details of the entire wedding process
- How valuable is the intermediate photographer certificate issued by the National Qualification Center of Beijing Municipal Human Resources and Social Security Bureau?
- Who is the founder of the film empire?
- Nothing strange. Seeing chaos is nothing more than absurdity.
- Top ten tourist attractions in Kuqa
- Brief introduction of tennis prince