ds-4000hf compression card is a professional
digital security product, which adopts the
most advanced h.264 video compression algorithm
and oggvorbis audio compression technology.
compared with ds-400xm and ds-400xh card,it
can capture and compress video in realtime
into h.264 streams, cbr (constant bit rate)
or vbr (variable bit rate), up to full-d1
resolution ntsc or pal, and ds-4000hf’s
sdk is compatible with ds-400xm and ds-400xh’s
.this makes development faster and easier.
ds-4000hf card
uses fully optimized algorithm based on dsp
technology to realize video & audio real-time
coding, active video & audio preview and
motion detection, etc. video image is directly
transmitted from card to display frame buffer
and compressed stream data is also directly
sent to host's memory. the whole transmit doesn’t
need any intervention of host computer processor,
saving resources of host computer 's processor
greatly. one personal computer can support up
to 16 channels video and audio input, parameters
of each channel can be set independently and
will not affect each other.
ds-4000hf compression
card supports windows 2000 operating system
at present. we provides demonstration application
with its source code, the whole sdk development
package including board sdk software, player
sdk, network sdk, media player plugging , etc
and also provides technical support and good
after- sale service.
video:
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video input: 1-4 channnel cvbs signal
standard: pal, ntsc
resolution(real time):
qcif:176*144(pal), 176*120(ntsc)
cif: 352*288(pal), 352*240(ntsc)
4cif: 704*576(pal),
704*480(ntsc)
frame rate: 25f/s(pal), 30f/s(ntsc)
output bitrate: 128kbps-4000kbps
audio:
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audio input: 1-4 channnel audio
input
sampling ratio: 16khz
output bitrate: 16kbps
ds-4000hfs: no audio
features &
functions :
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h.264(mpeg-4/part 10) video compression standard
leads to high compression ration and good video
quality
oggvorbis audio compression standard, with 16khz
sampling rate and 16kbps output bitrate
real-time video and audio compression, no frame
lost
4cif preview resolution
comply with pci 2.2 standard , a pc can support
up to 16 channels
support windows 2000 operating system
provide full sdk , demonstration with source
code
provide player sdk and network sdk for pc platform
. less than 1 second delay in lan
setable i. b.p frame sequence
setable video quality and bitrate
setable brightness , contrast , saturation and
hue of video signal
support motion detection
support osd , logo and mask overlay
support watermark technology
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