Transcript Arecont Vision_H.264 Presentation_09.08x

H.264
www.arecontvision.com
Strictly private and confidential
What is H.264
•
What is H.264?
– MPEG4 (Part 10)
•
Why was it developed?
– A joint effort to deliver HDTV resolutions though existing cabling
and satellite bandwidth restrictions… 720p, 1080i
www.arecontvision.com
How it works
•
Explain MJPEG first
– Just like taking pictures with your digital still camera, just a video
frame rates
•
Conditional Refresh
– Create image that shows if Object A moves from location 1 to 2,
the delta is only thing changed
www.arecontvision.com
Strictly private and confidential
Limitations
•
H.264 was limited to two specific resolutions
– 720p (0.9MP)
– 1080i / 1080p (2.1MP)
•
Limitation:
– LOTS of processing power
– Complex algorithms
– Something to drive it
www.arecontvision.com
Strictly private and confidential
The Arecont Advantage
•
Our proprietary implementation targeted unconventional H.264 formats that are
simply not available in the form of a purchasable IP core or a chipset -- the conventional
formats are those developed for common HDTV products, like camcorders, and
are 1080p and similar. However our solution supports all current AV camera formats and
frame rates, including 1600x1200 @24fps, 1920x1200 @20fps, 2040x1530 @15 fps, 2560x1600
@15 fps, 2596x1944 @12fps, as well as all arbitrarily cropped formats up to 2596x1944.
•
The cost of the purchasable h264 solutions is prohibitively high relative to the cost
structure of AV cameras. We were able to select a narrow subset of h264 options out of
the entire scope of all available options offered by the h264 standard that allowed us to
optimize performance vs. cost.
•
The frame rate of most (except very few) purchasable solutions was simply not sufficient
for AV cameras' speed. We have developed two proprietary signal pre-processing
techniques to support the max. frame rate in AV cameras.
•
The produced h264 stream is fully compliant with the standard, and is decodable by
all compliant h264 decoders. We have added a proprietary pre-encoding (preh264) nonlinear temporal filter to maximize the h264 compression to compensate for the
relatively narrow subset of h264 options limited by the cost.
www.arecontvision.com
•
Supported network protocols: RTSP and TFTP in H.264 mode; HTTP and TFTP in MJPEG
mode.
•
Our h264 solution supports up to 8 multiple independent h264 streams from the same
camera at different frame rates and different image formats and/or resolution.
•
Support of both H.264 compression and MJPEG compression at full resolution and realtime video frame rates, including switching compression standards on a frame-by-frame
basis.
•
Real Time Streaming Protocol (RTSP) for compatibility with Apple QuickTime or Windows
Media Player
•
Support of multi-streaming in both H.264 mode and in MJPEG mode: up to eight clients
with different video stream parameters.
•
Technical details of the on-camera H.264 encoder:
– Fully compliant H.264 / MPEG4 (Part 10) encoder, baseline profile;
– Optional bitrate control to maintain constant bandwidth and storage load;
– Up to 25x reduction of network bandwidth and storage requirements relative to
MJPEG (typical: 10x reduction);
www.arecontvision.com
Jump To Megapixel
•
Mega Pixel Offers
– High Definition
–
Dramatic forensic
improvements over analog & IP
VGA
–
Near Cost of name brand
Analog & IP VGA
Jump to
MegaPixel
B/W
Analog
EIA
Color
Analog
NTSC/
PAL
VGA
IP
Standard
Resolution
www.arecontvision.com
MegaPixel
IP
High Definition
Resolution
H.264 (MPEG4 Part 10)
•
•
•
•
•
•
•
•
•
H.264 provides
– Better Bandwidth Efficiency
– Better Storage Utilization
H.264 (MPEG4 Part 10) compression standard
Dual standard support: simultaneous streaming
of H.264 and MJPEG
Bit rate control to maintain desired bandwidth
and storage size
Unique proprietary implementation of H.264 does
not decrease full frame rates or image quality
Multi-streaming: up to 8 non-identical concurrent
streams (different frame rate, resolution, quality)
Simultaneous streaming of full FOV and multiple
ROI for forensic zooming
Real Time Streaming Protocol (RTSP) allows for
compatibility with media players such as Apple
QuickTime, VLC and others
World’s first full line of H.264 megapixel cameras
ranging from 1.3 to 5 megapixels and
maintaining real-time video frame rates
www.arecontvision.com