We call stitching the process by which two or more video fragments are taken and combined to generate a new one by joining the previous ones. It is usually used to insert advertisements in a video to be shown to the public.
The video stitching process starts with image calibration, correcting fundamental elements such as vignetting, chromatic aberration or perspective. After that, the video image is transformed (taking care of the rotation, focal length and analysis), and the process ends with the mixing of the fragments, which may require the following actions:
- Motion compensation.
- Color correction.
- Stacking the focus.
These tasks prior to the end of the process are essential for the final result to maintain the quality standards sought by professionals. This happens because the different fragments used may have variations in terms of luminosity, resolution or quality, and must be adjusted so that the resulting piece is balanced and optimal.