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Features
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* Downloader: Download videos directly from the website
* Multi-threaded: You can use 1-6 threads to download at the same time.

* Video crop: Crop video based on start at end time
* Change Video Music: Crop video based on start at end time
* Speed Up Video: Speed by 0.25x->1.5x
* Video Font: add text on video
* Video Merge: merge two video to one video