COMPUTER NETWORKING

Detailed explanation-1: -Some image file formats, like PNG or GIF, use only lossless compression, while others like TIFF and MNG may use either lossless or lossy methods.

Detailed explanation-2: -MPEG-4 files can be lossless, but more commonly they’re lossy. H. 264 is a far more efficient codec than MPEG-2, so the quality for a given bit-rate is much higher, and in many cases is visually lossless, i.e. you won’t see the difference.