On YouTube, the high resolution of most videos is stored as VP9 or AV1 video codec. You need to choose VP9 codec if you want to download the 4K resolution.
If you come across any problems during the process of purchasing or using our product(s), please feel free to contact us. Our service team is always on hand to assist you, and your issue will be dealt with as soon as possible.
1. At the top left, open the Apple menu. 2. Select About This Mac. 3. In the "Overview" tab, look for "Processor" or "Chip". 4. Check if it says "Intel" or "Apple".
