River Past Video Perspective is easy-to-use and fast video-conversion and -editing software for adjusting the video-aspect ratio. After you've downloaded a movie clip from the Internet, does your video editor or DVD-authoring software squeeze the wide-screen format to the regular 4x3? You can use Letter Box (black strips are added) or Pan & Scan (with the original video slides to fit in the new video). Convert video from 3GPP, 3GPP2, ASF, AVI, DAT (VCD), DivX, FLC/FLI animation, animated GIFs, QuickTime MOV, MPEG-4, MPEG-1, WMV, and XviD to AVI or WMV. You can choose your video or audio codecs, video quality, video size, frame rate, audio sample rate, channel, and bit rate. Clean up the time code in the bad videos that cause crashes or AV sync problems in other software. The program also can be used to convert files between NTSC and PAL formats.

Version 2.0.2 now supports LAME MP3 ACM and fixes a sync bug using QuickTime MOV, whose audio track has a nonzero offset.