MP3 and MP4 are two different file formats used for storing and sharing media files. Here are the key differences between the two:

MP3

• Stands for MPEG-1 Audio Layer 3
• Is an audio encoding format
• Can only handle audio files
• Uses lossy compression to reduce file size
• Compatible with virtually all music players
• Takes up less storage space than MP4 files

MP4

• Stands for MPEG-4 Part 14
• Is a digital multimedia container format
• Can store a range of data, including video, audio, text, and images
• Uses compression technology to reduce file size
• Takes up more storage space than MP3 files
• Compatible with devices that support both audio and video files

In summary, MP3 is primarily used for audio files, while MP4 is used for multimedia files that can include audio, video, text, and images. MP3 files are smaller in size and compatible with virtually all music players, while MP4 files take up more storage space and require devices that support both audio and video files.