SD
SD is the acronym for Standard Definition.
Standard Definition
SD stands for Standard Definition. It is a term that describes video and audio with a lower resolution than high definition (HD). SD video has a resolution of 720 x 480 pixels, while HD video has a 1920 x 1080 pixels resolution. SD audio has a sampling rate of 24 kHz, while HD audio has a sampling rate of 48 kHz.
- Abbreviation: SD