River Past Animated GIF Converter是最简单的动画GIF转换工具。它可以转换视频文件像3G video (3GPP/3GPP2), ASF, AVI, DAT (VCD), DivX, DV, DVR-MS, FLC/FLI Flic animation, IVF, Matroska MKV, QuickTime MOV, MP4 (MPEG-4), MPEG-1, OGG Media OGM, RealMedia RM/RAM, VOB, VRO, WMV 和 XVID 等格式为GIF动画。