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Video on Demand

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Glossary

Real-Time Image Processing

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Last updated: 2022-12-01 16:30:24
Image scaling and cropping have many use cases. For example, images may be scaled to generate thumbnails for media files, and cropping is needed to make square or circular user profile photos. When images are stored in the cloud, traditional editing methods such as locally run software and online editing tools have many disadvantages, for example:
The process of downloading, editing, and uploading is complicated.
Manual editing is not efficient and prone to errors.
These pain points can be addressed by VOD’s real-time image processing feature.
Aspect
Traditional Image Editing
VOD Image Processing
Process
You need to download the images, edit them, and then upload them. The process is complicated and time-consuming.
All operations are performed in the cloud, with no need for download or upload.
Operation
You need to have some knowledge of image editing to be able to use image editing software.
You can edit images in real time simply by specifying URL parameters.
Speed
It can be slow to access and download images stored in the cloud via URLs, hurting the user experience.
CDNs are used for acceleration, allowing you to get the result immediately.
The real-time image processing feature of VOD supports scaling and cropping operations.
Type
Operation
Scaling
Width: Specified; height: Auto-scaled
Height: Specified; width: Auto-scaled
Long side: Specified; short side: Auto-scaled
Short side: Specified; long side: Auto-scaled
Width: Specified; height: Specified
Cropping
Cropping to circle, with the radius specified
Cropping to rectangle, with height and width specified
For detailed directions on how to process images with VOD, see Real-Time Image Processing.

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