Chinese video platforms — Bilibili for long-form, Douyin for short-form, Kuaishou for live streams and short videos, Xiaohongshu (RedNote / RED) for lifestyle and the recently surging WeChat Channels — operate on completely different APIs from their Western counterparts. The signing schemes, CDN behaviour, quality ladders and watermark conventions all diverge, which is why generic "any URL" downloaders typically fail on these platforms. The China Downloader hub gathers Ai2Done's purpose-built downloaders for each of these networks, with the platform-specific quirks already handled.
Bilibili is the most-loved long-form Chinese platform; the downloader handles standard videos, bangumi (anime episodes), live replays and the multi-part series ("分P视频") format with each part offered as a separate file. Quality goes up to 4K HDR where the uploader has published it. Douyin (the China-domestic version of TikTok) is supported with watermark-free MP4 output, including 60 fps where the source provides it.
Kuaishou is the dominant short-video platform outside the first-tier cities and has a distinct creator ecosystem; the downloader handles short clips and live replays. Xiaohongshu (Little Red Book, RedNote, RED) videos are typically lifestyle vlogs and product reviews; the downloader exports MP4 with audio intact. WeChat Channels (视频号) requires URL extraction from the WeChat client because the platform deliberately blocks direct browser access, but once you have the share URL the downloader handles the rest.
For users outside China, these tools are valuable for market research (what is trending on Chinese-domestic platforms), language learning (subtitled Bilibili videos), tourism prep (Xiaohongshu travel vlogs) and competitive analysis. For users inside China, they provide a no-app way to save content for offline viewing without requiring a paid platform subscription.
The TikTok Tools hub covers the international TikTok / Douyin / CapCut trio with somewhat overlapping advice. The Video Downloader and Social Downloader hubs collect Western platforms. Pair these tools with the Video Editor hub for post-processing (trim, mute, add your own subtitle track) and the Video Compressor hub if the original 4K Bilibili download is too large for your destination.