I went to open a video in iPhoto. It recognized the video, but I got a message saying, "The video can't be opened. You may need to install additional software to open this type of file." My Quicktime is up to date. The file kind is Apple MPEG-4 movie. The codecs are MPEG-4 AAC, AVC0 Media, Subtitle, 3GPP Text, Photo-JPEG. Does anyone know what the additional software I would need is?