On Cctv What Is the Difference Between Substream and Mainstream?

Mainstream: is the primary video feed mainly use for recording.. Sub-stream: is used mainly for remote viewing from computers, smartphones, or tablets over the Internet from outside the network..

What is Substream in CCTV?

Substream is a secondary stream coming from the recorder or cameras. This is customizable but at most uses about 512Kbps and is standard definition quality. This is great for viewing on some computers and most internet connections.

What is Substream resolution?

Sub-stream: offering low/standard definition video primarily for lower bandwidth situations, the sub-stream resolution are QCIF, CIF, 2CIF, DCIF, 4CIF (D1). The majority video surveillance products can automatically choose appropriate sub-stream resolution to match your smartphone's display resolution.