Video playback problems -- more solutions An inability to properly playback videos continues to be the biggest problem facing users who upgrade to QuickTime 7.4. As previously reported, some movies ...

MP4 is one of the most popular and crucial video file formats. It is commonly used as a default format for recording videos on all devices. It’s also used for almost everything from sharing short ...

Several users have reported that QuickTime 7.4.1 does not resolve plyabck issues (existent in QuickTime 7.4) in which some movies play without video, others play without sound, and still others don't ...