


If you are completely new to this field or don't trust third-party codec packs, transcode your MP4 file with VideoProc Converter. And we've made a roundup of third-party MP4 codecs to fix MP4 can't play issues on your Windows or Mac.

Many codec manufactures provide codec packs including a wide array of codecs for MP4 videos. So you need to install an MP4 codec to interpret MP4 files encoded in different coding standards, such as HEVC, MPEG-4, AVC/H.264… for the operating system and its software. However, playback errors still happen occasionally, because an MP4 video can be encoded in various ways, while your player does not own the counterpart to decode the file. You may think MP4 is the most universal file format that can be accepted by any media player and device.
