With the latest changes to its website, YouTube has begun to seriously push its webm video format (VP8 video, Vorbis audio) as its preferred viewing option. It also means that if you use our YouTube downloader, PC user YouGrab 4, to download a video and YouTube doesn't have the specific format/version selection you requested, the app will very likely download the best-quality webm version. (If you have an HMTL5-compliant web browser, this is also likely what you'll see when you watch a clip on the YouTube website directly).





