Elements like data transmission, storage, and processing are critical variables to consider in CCTV projects, with Bitrate being a key factor.
This concern is shared by managers who must account for all these variables during the acquisition of cameras and network equipment. Understanding how Bitrate works is essential for this process.
As explained in this article, Bitrate calculates the data traffic generated by a camera over a specific period. This result determines the necessary investment in connection speed between devices and, consequently, memory storage.
The Bitrate outcome is influenced by the image capture resolution (from a camera), frames per second (FPS) rate, and image compression.
Additionally, the Bitrate operation mode can be configured based on the project type.
The main operation modes are Variable Bitrate (VBR) and Maximum Bitrate (MBR).
The Variable mode adjusts the Bitrate according to the complexity of the captured image, prioritizing higher Bitrate for more complex elements and lower Bitrate for less complex ones. This process results in an average bit rate of the file.
The advantage of using VBR is greater efficiency in allocation and transmission, but for projects with limited bandwidth resources, the use of MBR (Maximum Bitrate) is recommended.
The Maximum mode sets a maximum Bitrate value, though it still allows some flexibility. The purpose of this type of stream is to prevent the Bitrate value from increasing to ensure the bandwidth can handle a continuous flow.
However, a drawback is that the frame rate and image quality may be affected to prioritize the maximum value. In this type of stream, it is possible to choose which variable to prioritize—whether frame rate or image quality—in an MBR flow, allowing managers to define which aspect is more critical for their project.
If you need to quote cameras and require a Bitrate calculation, click here to explore our online tool for CCTV project quotes. In this tool, you can define parameters such as location, occupancy, and other variables, and then submit a request for a quote so we can provide the correct equipment for your project type.
