In English
VCODEC-H264 - одноканальный модуль видезахвата / декодирования в стандарте H264 PC/104+ , < 8.75 W, -40~+85 ºC
Снято с производства
VCODEC-H264 - одноканальный видеокодек H264 в стандартном формате PC/104plus. VCODEC-H264 является мощным и гибким инструментом для захвата видеосигнала с аналогового видеовхода и аппаратного преобразования в стандартный цифровой видеоформат H264.
VCODEC-H264 не только обеспечивает перевод аналогового сигнала в формат H264, но может также производить декомпрессию H264 и повторное воспроизведение видеозаписей H264 на мониторе.
VCODEC-H264 позволяет осуществлять в реальном времени качественный захват видео и звука из видеоисточников PAL/NTSC, аппаратное преобразование в формат H264, запись на диск и одновременно обеспечивает декомпрессию для предварительного просмотра на экране. Высокая производительность при сжатии видеоданных в формат H264 и небольшая нагрузка на шину PCI (PC/104+) позволяют одновременно подключать к системе PC/104plus до 4-x модулей VCODEC-H264.
Особенности
Захват/Декодирование/Воспроизведение H264
Полнокадровый захват 1 x D1 и преобразование в H264 на без потери числа кадров в секунду
Наложение текста и графики
Предварительный просмотр и воспроизведение на VGA
Предварительный просмотр и воспроизведение через композитный видеовыход PAL/NTSC на TV
До 4-x модулей в 1 системе
Автоматическое выявление движения (изменений в определенных областях кадров)
Автоматическое включение записи или увеличение качества кадров по событиям (выявление изменений)
Драйверы Win-NT/2000/XP-E, Linux, QNX
Применение
Системы видеотелеметрии
Системы безопасности
Видоенаблюдение на транспорте
Видеомониторинг на магистралях
Многокамерные системы видеонаблюдения
Автоматизированные/автоматические системы анализа ситуации по видеоизображениям
Видеосерверы на базе твердотельных накопителей
Video Recording Modes
The VCODEC-H264 supports recording up to four video video inputs as a single H264 file
as if they were coming from a single video source. There is no separation and the
resulting H264 file can be played as a single H264 stream by the VCODEC-H264 or appropriate hardware/software decoders.
I/P Frame Encoding
The VCODEC-H264 supports encoding of both I and P frames. Encoding of only I
frames is also supported. The VCODECH264 supports any number of P-frames
between successive I-frames. The VCODECH264 also supports automatic scene change
detection that inserts an I-frame to improve compression efficiency Encoding Bit Rate Control.
The VCODEC-H264 provides flexible bit rate control by providing two modes: Variable Bit Rate (VBR) and Constant Bit Rate (CBR).
Variable Bit Rate (VBR)
For VBR mode the picture quality is fixed according to a Quantisation value of between
15 and 55. The bit rate varies automatically in reaction to the incoming video to maintain
the set quality. VBR is appropriate for storage applications.
Constant Bit Rate (CBR)
In CBR mode, the average bit rate is fixed and the picture quality is automatically
adjusted by the VCODEC-H264 on a frameby-frame basis to maintain the preset average bit rate. CBR is of particular benefit where video needs to be streamed over a fixed-bandwidth link.
Motion Detection and Event Triggers
The VCODEC-H264 supports automatic motion detection. Motion detection
parameters such as regions of interest and frame difference threshold can be configured
under software control. Using the motion-detection feature the VCODEC-H264 can be operated in a babysitting mode where recording is committed to disk only when scene motion event is detected, to make most efficient use of disk
storage. Software for the VCODEC-H264 allows recording of pre-trigger, on-trigger and posttrigger events.
Uncompressed Video Preview
The VCODEC-H264 provides a secondary video path allowing the video being recorded
to be streamed across the PC/104plus bus to the host system’s VGA buffer for video
previewing. The Preview output can also be used to view an alternate video source while recording other inputs. The Preview information is also available as a composite PAL/NTSC output suitable for driving a PAL/NTSC or RS170 display device. The uncompressed video, in RGB or YUV format, is available to downstream processes and may be used in further image processing applications.
OSD Video Text Overlay
The VCODEC-H264 has a bit-mapped graphic overlay feature which allows text and
graphics to be overlaid on incoming video prior to recording. This a useful feature for applying real-time annotation and labelling to Preview and H264 recordings.
The VCODEC-H264 provides various layers of overlay such as character/bitmap, box
overlay and mouse pointer which can be overlaid on Preview and Record paths independently. Video source information such as camera reference, location, time and date stamp, etc can be overlaid on both preview andrecordings.
Full Duplex Video Recording System
H264 Decode and Playback The VCODEC-H264 supports decoding and playback of H264 files from storage to the host system’s display screen. Maximum image size of decoded video is 720 x 480 (NTSC) or 720 x 576 (PAL). Audio data which is part of the original recording is also decoded and played back in synchronisation with the video. In addition to playback to the system’s VGA device, the VCODEC-H264 provides a composite PAL/NTSC playback output suitable for directly driving a PAL/NTSC or RS170 display device.
Technical Specification
Single Channel H264 Codec
PC/104plus Bus Interface
Compliant with PCI Rev 2.1
132MBytes/sec bandwidth at 33.33 MHz bus speed
Live H264 capture to memory or disk
Concurrent H264 Capture and live preview
Analogue Video Input
Up to 4 concurrent composite PAL or NTSC video input channels
Two input video multiplexer per Channel (up to 8 cameras)
Four 10-bit Analogue-to-Digital converters
Anti-aliasing filters on inputs
Video Input Formats
Standard CCIR601-NTSC, CCIR-PAL
NTSC-M, NTSC-Japan
PAL-B, PAL-D, PAL-G, PAL-H, PAL-I, PAL-M, PAL-N
Video Input Adjustments
Contrast (or luma gain) adjustable from 0 - 200% of original value
Saturation (or chroma gain) adjustable from 0 - 200% of original value
Hue (or chroma phase) adjustable from –180 to +180
Brightness (or luma level) can be adjusted from 0 - 255 steps
Audio Input
High-quality stereo input
Provides Audio/Video Synchronisation
Video Encoding
H264 Video Encoding (ISO/IEC 14496-10, Baseline and Main Profile)
1 channel NTSC full D1 ( 720 x 480) at 30fps
1 channel PAL full D1 ( 720 x 576) at 25fps
Supports I, P and B Frame Compression
Supports Variable Bit Rate (VBR)
Supports Constant Bit Rate (CBR)
Audio Encoding
MPEG1 Layer2 at up to 384KBits/sec
AAC-LC at upto 384KBits/sec
Video Decoding / Playback
Real-time H264 Video Decoding
ISO/IEC 14496-10, H264 Baseline and Main profile
Playback to Composite PAL/NTSC output
Uncompressed Video Path
Real-time Preview to host VGA display
Preview to Composite PAL/NTSC output
Optional uncompressed RGB/YUV for downstream applications
Motion Detection
1350 (NTSC) or 1620 (PAL) detection blocks
Masking of areas not required for motion detection
Adjustable sensitivity
System Requirements
x86 PC-Compatible PC/104+ Computer
PCI or AGP Display (if Video Preview to host is required)
Spare REQ/GNT on PC/104+ Bus
3.3V or 5V signalling PC/104+ bus
Miscellaneous
Single +5V at less than 1.75A
Operating temp 0°C to 60°C or –40°C to +85°C (extended temp option)
Standard 3.6 x 3.8in PC/104plus form factor
Software Drivers
Drivers for Windows-NT/2000/XP, Linux, QNX
Sample video recording application in C/C++ source code
Related Products
VCH264-VTelemetry Low Latency Video Telemetry SDK
VCH264-VStream RTSP Video Streaming SDK
Ordering Information
VCODEC-H264 H264 Video Codec (0 to 60°C)
VCODEC-H264-Ext H264 Video Codec (-40°C to +85°C)
VCODEC-H264
