From Push My:
With ViV's easy to use interface, creating a video in video will be effortless. ViV supports embed unlimited videos inside a video. Preserve the base source resolution. If the source is HD video, then you will get HD output. Turn on or off the audio of each embedded video. Create border on each video with selectable color and thickness. Move & position the videos anywhere around the base frame via touch gesture. Use finger panning gesture to resize the videos relative to the base frame video as you desire. Fast video processing time. Manage processed video with ability to rename, delete & preview. Export processed video to email or camera roll or to any other installed App in you device that supports video importing via the preview action button such as Dropbox, WhatsApp, Hex Editor. Processed video can also be copied directly to your Mac / PC via the iTunes App sharing folder. Auto detect your videos orientation when embedding into mixed of portrait & landscape form videos. Always preserved video dimension ratio to maintain the video source quality.