Allavsoft can fast and batch download movies, music videos, playlist from all kinds of video sharing websites as well as convert to any popular video or audio format. Key Features: One step to download and convert F4F, FLV, F4V, F4M, WebM to MP4, AVI, WMV, MOV, MPEG-1, MPEG-2, VOB, ASF, RMVB, DV, TS, Apple ProRes, WebM, FLV, OGV and etc Extract and download audio from online music video or movies as well as convert to popular audio format like MP3, WMA, WAV, AAC, AAC, Apple Lossless M4A, AIFF, RA, FLAC, OGG, AU and etc. Download movies from 100+ video sharing sites like Facebook, eHow; Fast download videos in ultra high definition 4K 4096p, HD 1080p, 720p, 3K, 3D or SD 480p or 360p. Built-in player plays downloaded movies, music in any format. Support video download add-on for Firefox, Chrome, Safari Support download resume, keep download history, action after download.