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To compress video signals from IP-devices, standard (MPEG4) or manufacturer vendor designed algorithms are in use.
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If video resolution on the Monitor is less than resolution of compressed video, then INTELLECT™ partly decompresses video (it allows reducing load of CPU that decompresses video). Network load is reduced if the MotionWavelet codec is in use; if other codecs are in use, then the network load stays the same. Partial decompression is supported by MPEG4, MJPEG, MXPEG, Motion Wavelet and H264svc codecs. Partial decompression is not supported by H263, H264avc and Mpeg2 codecs. Fps Only fps reduction only is supported by H264svc-t codec.
Description of decompressors is shown in the table.
Decompressor | Description |
FfmpegAllInOneDecoder | A module with a set of Ffmpeg library decoders (with an open source code). It allows converting multimedia data compressed by MxPEG, MPEG2, MPEG4 and Motion JPEG codecs |
FfmpegH264Decoder
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H264DecodeBalancer
A module used for CUDA-enabled graphics cards. It automatically switches (depending on video signal parameters) between CUDA and decoders of the IPP library
H264InterlacedIppDecoder H264IppDecoder MPEG2IppDecoder |
MJPEGIppDecoder MPEG4IppDecoder | Decompressors included into the Intel Integrated Performance Primitives (Intel IPP) library. A compression format is specified in the decompressor name.
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| H264SvcEx | A decompressor for converting video signals in |
H264Svc format received from Stretch devices into the H264Avc format. | |
H264SvcTex | A decompressor for converting video signals in H264Svc-t format received from VIVOTEC devices into the H264Avc format. |
MxPEG Mobotix | A decompressor for converting video signals received from Mobotix devices. |
Motion Wavelet |
7.1 |
A decompressor for wavelet-converting video signals |
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BOSCH | A decompressor for converting video signals received from BOSCH devices |
Hikvision Decoder
A decompressor for converting video signals received from Hikvision devices
StreamLabs
A decompressor for converting video signals received from StreamLabs (Wavelet and MotionWavelet) devices
VWV
A decompressor for converting video signals received from VisioWave cameras
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When decompressors included into the Intel IPP library are in use, there can be video distortions for some resolutions. In these cases resolutions divisible by 16 are recommended to be used (e.g, 1280x720 or 1360x768) or another decompressor is to be selected. |
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By default compression and decompressionalgorithms are not available for selecting and Compressor and Decompressor dropdown lists are not available for editing. To enable this feature set the “1” value for EnableCodecSettings registry parameter (see Registry keys reference guide). |
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In multistream mode (see Configuration of multistream video) the codec selecting and settings of video signal quality is performed separately for each video stream on the Camera object’s settings panel on the Video stream tab. |
If the compressor/decompressor (default value) is not selected on the settings panel of a Camera object or the incorrect one is selected, then INTELLECT ™ software automatically selects the first compressor/decompressor in alphabetical order. If it does not fit too, the following one is selected and so on, until the correct one is selected.
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When WS7 and WS17 video capture cards are in use, the Decompression field is to be left blank otherwise use Motion Wavelet decompressor. If another decompressor is selected, then INTELLECT™ operation is not guaranteed. |
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| If for some reasons the automatic decompressor selection is not right, then you are to select a decompressor manually. |
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