The SAR and DAR output in the FFmpeg terminal are as follows
1 | Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4': |
SAR (Sample Aspect Ratio) : 单个像素的宽度和像素的高度的比 (That is the width of a pixel divided by the height of the pixel.)
DAR (Display Aspect Ratio) : 预期显示的宽度与高度的比 (The intended display’s width-to-height aspect)
PAR (Picture Aspect Ratio) : 宽度与高度像素个数的比 (‘horizontal_size’:’vertical_size’)
What’s confusing:
Storage aspect ratio (SAR) is the ratio of numbers of pixels.
Pixel aspect ratio (PAR) is a mathematical ratio that describes how the width of a pixel in a digital image compared to the height of that pixel.