Why i cant download video in offline app it says the url is invalid

CapCut is a video editing tool that provides a range of powerful features for users. One of its key features is the ability to accurately remove the background of portrait videos and replace it with an uploaded image or change the background color. Additionally, CapCut can upscale images by increasing their resolution, adjust image color with AI color correction, restore old photos, and colorize black and white photos with AI. Another notable feature of CapCut is its AI portrait generator, which can generate portraits in various styles using artificial intelligence. CapCut also offers the ability to resize videos and change their aspect ratio, while adding color, images, or blur effects to the background to meet the needs of various platforms. Auto reframe will soon be available as well. CapCut also has auto captions feature, which automatically recognizes different languages and generates high-accuracy captions to boost editing efficiency. Users can also convert any text to natural-sounding speech with just one click, with 11 voices and 10 languages supported. Finally, CapCut provides access to a rich video editing material library, including templates, music, stickers, texts, effects, and filters. With over 10 million templates, 500K music tracks, 4,600 stickers, 1,300 texts, 1,100 effects, and 200 filters, users have a wealth of resources at their fingertips to create engaging and high-quality video content.