: Originally designed as a low-bitrate compressed format for videoconferencing, it is technically known as MPEG-4 Part 2 .
: H.263 is optimized for smaller frame sizes (up to 1408 x 1152 pixels) and often encounters errors when forced into HD resolutions like 1920 x 1080. 00263 mp4
: H.263 has been largely superseded by H.264 (AVC) and H.265 (HEVC), which offer significantly better compression and quality at higher resolutions. Technical Characteristics : Originally designed as a low-bitrate compressed format