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Mango DSP video surveillance products support multiple video encoding options including H264, MPEG4 and MJPEG. Each Codec possesses different advantages depending on application. Mango’s devices support the ability to encode each stream in multiple resolutions and different encoders to deliver optimized video to each client application (such as live view and record).
H264 video encoding provides the most efficient compression, delivering considerably more detail at a lower bitrate compared to other compression methods. Mango support the Baseline Profile (BP) of H264. Mango DSP’s H264 encoder is configured to provide low latency and high resilience to network errors.
Best image at the lowest bandwidth
30%-40% lower bitrate compared to MPEG4
Low end-to-end latency
Requires higher speed grade processors for encoding
Requires powerful PC to decode
Limited yet growing VMS support
MPEG-4 is the most widely used video encoding used for video surveillance today. It offers excellent price/performance and is near universally supported by all VMS systems. . Mango support the Simple Profile (SP) of MPEG-4. Mango DSP’s H264 encoder is configured to provide low latency and high resilience to network errors.
Good video quality at reasonable bitrates
Near universal support by VMS
Not as efficient as H264
Supports 4:2:2 interleaved or 4:2:0 Input
Supports D1 30fps at 3Mbps
16x16 Motion partition based ME/MC
Configurable search range
Configurable intra frame period
CBR Rate Control
Support I and P frames
MJPEG is the oldest and still most commonly supported form of video compression. MJPEG is essentially a sequence of individually compressed JPEG images. Due to the extremely simple, non temporal type of compression, MJPEG offers the highest resiliency to noise, low latency while requiring minimal system resources to encode or decode. On the downside MJPEG provides significantly lower quality at every given bitrate. MJPEG is mostly used as a second encode stream, running in parallel to MPEG4 or H264, providing a low quality stream for handheld devices on noisy, low bandwidth networks.
Simple to implement
Low hardware requirements to encode or decode
Works well at very low frame rates
Near perfect noise resiliency
Low video quality unless running extremely high bitrates
|Developed by Interdate LTD|