Free Video to GIF is a free and powerful application to convert video to animated GIF files. You can use this software to convert selected part or convert a single video file. It can convert almost all popular video formats to GIF, including MP4, MPEG, AVI, WMV, ASF, FLV, MOV, 3GP, MKV, RMVB, VOB, WebM, etc. If the video is long, it is possible to trim it and convert only a segment of video to GIF. You can also adjust the output GIF's frame size.