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1、H.264编码器市场调研一、 市场现有产品1、 LSI LogicH.264 VLE4000 用于广播的编码器LSI逻辑推出的VLE4000，是全世界首个用于新兴H.264/MPEG-4 AVC标准的实时编码器。VLE4000实时H.264编码器适用于机架式PC，包含一个SDI输入卡和视频压缩卡。VLE4000以实时方式进行压缩，达到全full D1标准解析度30帧/秒。以MPEG-2传输码流压缩的视频在多点传送以太网上发出，然后通过我们的VLD4000 H.264实时解码器接收。VLE4000已可供货，适用于早期使用，试验及H.264评估。产品特性 VLE4000包含一个实时H.264标准清
2、晰度编码器H.264/MPEG-4 AVC编码，达到Main Profile Level 3卓越的解码质量和验证平台产品优势 广播、网络码流、消费类电子和内容创造环境中专业级数字视频的理想选择压缩率是MPEG-2的两倍链接：2、 先锋先锋在“2005 International CES”上演示了采用H.264/MPEG-4 AVC方式的影像实时编码。该公司曾在2004年10月举行的“CEATEC 2004”上以1.5Mbit/秒的速度演示过720480像素的SDTV影像的编码，HDTV影像的演示尚属首次。 将19201080像素、60帧/秒的HDTV影像输入设备，然后进行了实时编码。编码器支持
3、的协议为Main Profile、级别为4.1。编码数据速度为可变，平均值为9Mbit/秒。 为实现这一编码速度，在一个机壳内嵌入了3枚支持SDTV编码的板卡。据说，在CEATEC上只使用了一枚这样的板卡。此次将画面按上下方向分为三个区域，每个区域的编码处理由一枚板卡负责。同时还对因分区而造成的连接部位的像素的连接性进行了处理。各区域的编码处理中分别使用了4个美国德州仪器公司生产的DSP，这样在编码处理中共计使用了12个DSP。另外，影像数据加载到MPEG-2 transport stream上传送、在另外的机顶盒中进行解码处理。3、 三菱电机便携H.264编码器 面向单频段电视三菱电机200
4、5年2月15日在公司研发成果展示会上演示了H.264/MPEG-4 AVC（以下简称H.264）规格小型DSP编码设备。利用1个DSP即可实时地对基于日本定于2005年度末开播的移动微波数字电视（即单频段电视）规格的视频数据进行编码处理。H.264是一种以2Mbit/秒的数据编码速度，即可实现画质媲美于8Mbit/秒MPEG-2规格的高压缩率视频编码方式。单频段电视规格的处理上限为QVGA（320240像素）格式、15帧/秒，而这次的编码器却“能够进行超过20帧/秒的处理”（三菱电机）。运行这种编码器的DSP工作频率为600MHz。处理延迟约为0.2秒。 开发出在DSP上运行的H.264编码器
5、之后，就能根据输入信号的像素数、帧速度、拍摄对象或相机动作的大小，以及是转播还是监控等各种不同的条件，对参数进行调整。“尤其是监控用途，根据不同情况而使用的参数区别很大”（三菱电机）。 这次的编码器设备非常小，大概为B5尺寸。“假如是面向电视台的固定型设备，就没有必要设计得太小。而我们则希望它能用于采访现场的转播和监控业务”（三菱电机）。4、 Envivio Broadcast Series SD Encoders：（1）4Caster B3（Fourth Generation Real Time MPEG-4 AVC/H.264 Encoder for Media Transport and
6、 IPTV Solutions）The 4Caster B3 is a fourth generation real time compression product and the newest encoder in the Envivio Broadcast Series. The 4Caster B3 delivers the most complete implementation of MPEG-4 AVC/H.264 compression techniques available and is ideal for standard definition broadcast con
7、tribution, distribution and IPTV applications. The B3 delivers the highest quality, full resolution video at less than 2 Mbps.The B3s all-new hardware platform combined with superior encoding algorithms offers broadcasters and IPTV service providers greater processing power for advanced compression
8、capabilities and noise reduction for bandwidth constrained applications. Increased bandwidth efficiency combined with high quality video in lower bit rates, allows broadcasters and service providers to expand service offerings while optimizing throughput over their distribution networks.Product High
9、lights Real time MPEG-4 AVC/H.264 standard definition encoder High quality multi-channel AAC audio Broadcast quality video at up to half the bit rates of MPEG-2 encoding systems Variety of transport protocols, including straight MPEG-4 over RTP, MPEG-2 TS over UDP, RTP or with optional DVB interface
10、 IP interface optimized for constant bit rate transport (ISMA and DVB-AVC compatible) Store and forward （2）4Caster 3500（Real Time MPEG-4 AVC/H.264 encoder for Media Transport and IPTV Solutions）The 4Caster encoder from Envivio provides real-time MPEG-4 AVC/H.264 encoding offering the highest quality
11、 video at the lowest possible bitrate. It has been designed to meet the needs of all fixed and mobile professional video contribution and distribution applications over a variety of transport protocols, including MPEG-2 TS with DVB or IP interface, and ISDB-T. The 4Caster 3500 is a value choice in E
12、nvivios line of carrier-grade solutions for IPTV deployment.Product Highlights Broadcast-quality, real-time MPEG-4 AVC/H.264 SD encoder Greatly reduced transmission costs compared to MPEG-2 Variety of transport protocols, including MPEG-2 TS with DVB or IP interface Optimized for IP transport (ISMA
13、compatible) Mobile broadcast (DVB-H and ISDB-T) ready Store and forward （3）4Coder 4500SEOffline MPEG-4 AVC/H.264 Standard Definition Software Encoder for Broadcast VideoThe Envivio 4Coder 4500SE is a broadcast quality offline software encoder ideal for preparing video for digital television services
14、. MPEG-4 AVC/H.264 compression ensures the highest quality video at bit rates under 2 Mbps. A file-based encoding system, the 4Coder supports a wide range of input formats and outputs highly efficient files in the formats required for on demand video for IPTV and mobile television services. With adv
15、anced features, such as automated batch capturing and SNMP monitoring, the 4500SE is a broadcast grade system that can manage large quantities of video with minimal effort. And with user-friendly interface controls and optimization for advanced multiprocessor platforms, the software keeps production
16、 time and costs to a minimum.Product Highlights File-based MPEG-4 AVC/H.264 standard definition software encoder Broadcast quality video at up to half the bit rates of MPEG-2 encoding systems Advanced pre-processing for outstanding encoding quality Software optimized for advanced multi-processor pla
17、tforms for efficient production Broadcast Series HD Encoders：（1）Envivio 4Caster HD3 - BetaLive High Definition MPEG-4 AVC/H.264 Encoder for Media Transport and IPTV SolutionsEnvivio 4Caster HD3 is a broadcast quality live high definition encoding system that provides the highest quality video at a f
18、lexible range of bit rates between 2 and 20 Mbps. The system can compress content in real time to air or disk with the same quality levels as MPEG-2 at less than half the bitrate. This makes it ideal for both real time and store & forward contribution and distribution applications. Developed with hi
19、gh quality, low data rate multi-media applications in mind, the system supports native Real Time Protocol (RTP) transmission over IP, which is rapidly becoming the infrastructure of choice for HD. The 4Caster HD3 also supports MPEG-2 Transport Stream (TS) for easy integration with traditional infras
20、tructure. And with convenient features such as a sleek 1 rack unit (RU) form factor, remote web-based system control, and compression support for 720p and 1080i broadcast content, the HD3 is the system of choice for quality HD encoding.Product Highlights Live AVC/H.264 HD encoding at 720p and 1080i
21、resolution for broadcast contribution and distribution applications Supports current and future network delivery infrastructure including MPEG-2 Transport Stream (TS) and native Real Time Protocol (RTP) over IP Control the system locally via front panel access or remotely via RS232 or a convenient w
22、eb-based interface Compact 1 rack unit (RU) design based on blade architecture Flexible encoding platform offering the highest quality video compression at bit rates between 2 and 20 Mbps The 4Caster HD3 is currently a beta release. The product is scheduled for full release by April 2006. Product sp
23、ecifications and pictures are subject to change without notice.（2）Envivio 4Coder 8500SE SoftwareOffline MPEG-4 AVC/H.264 High Definition Software Encoder for Broadcast VideoThe Envivio 4Coder 8500SE is a broadcast quality high definition offline software encoder ideal for preparing video for digital
24、 television services. MPEG-4 AVC/H.264 compression ensures the highest quality video at bit rates between 20 kbps and 20 Mbps and resolutions at 720p or 1080i. A file-based encoding system, the 4Coder supports a wide range of input formats and outputs highly efficient files in the formats required f
25、or on demand video for IPTV services. With advanced features such as automated batch capturing and SNMP monitoring, the 8500SE is a broadcast grade system which can manage large quantities of video with minimal effort. And with streamlined interface controls that only display relevant setting option
26、s and optimization for advanced multiprocessor platforms, the software keeps production time and costs to a minimum.Product Highlights File-based MPEG-4 AVC/H.264 high definition software for the highest quality offline encoding of high definition content at 720p or 1080i. Broadcast quality video at
27、 up to half the bit rates of MPEG-2 encoding systems Advanced pre-processing for outstanding encoding quality Software optimized for advanced multi-processor platforms for efficient production Mobile Video Series Encoders：（1）Envivio 4Caster M2（Live MPEG-4 H.263/H.264 Encoder Optimized for Mobile Net
28、works）Envivio 4Caster M2 is a live MPEG-4 H.263/H.264 encoder that optimizes video for delivery to mobile television subscribers. MPEG-4 compression ensures the highest quality video at the lowest possible bit rates. With the most widely deployed encoders for mobile applications, Envivio MPEG-4 expe
29、rts can guide mobile operators wanting to enrich subscriber packages beyond voice and broadcasters wanting to repurpose content for on demand video and mobile TV. Compliance with international mobile delivery standards including 3GPP, DVB-H, and ISDB-T allows the M2 to reach the highest number of su
30、bscribers and makes it the ideal system to support the mobile applications of today and tomorrow.Product Highlights Live MPEG-4 H.263 and H.264 encoding optimized for mobile application data rates and screen resolutions Support for commonly deployed encapsulation and file format standards including
31、3GPP, DVB-H and ISDB-T Proven interoperability with new and existing MPEG-4 handsets from the maker of the most widely deployed encoders for professional mobile video applications. （2）4Caster Mobile Software（Live and Offline MPEG-4 H.263/H.264 Software Encoder Optimized for Mobile Networks）Envivio 4
32、Caster Mobile is a live and offline MPEG-4 H.263/H.264 software encoder that optimizes video for delivery to mobile television subscribers. MPEG-4 compression ensures the highest quality video at the lowest possible bit rates. With the most widely deployed encoders for mobile applications, Envivio M
33、PEG-4 experts can guide mobile operators wanting to enrich subscriber packages beyond voice and broadcasters wanting to repurpose content for on demand video and mobile TV. Compliance with international mobile delivery standards including 3GPP, DVB-H, and ISMA allows the 4Caster Mobile to reach the
34、highest number of subscribers and makes it the ideal system to support the mobile applications of today and tomorrow.Product Highlights MPEG-4 H.263 and H.264 live and offline software encoding optimized for mobile application data rates and screen resolutions Support for commonly deployed encapsula
35、tion and file format standards including 3GPP, DVB-H and ISMA Software platform enables the flexibility of custom configuration. Proven interoperability with new and existing MPEG-4 handsets from the maker of the most widely deployed encoders for professional mobile video applications. 5、 思华科技 H.264
36、实时编码器H.264/AVC为多样的视频应用提供了众多的先进特性，因此被广泛的期待，相比于其他的压缩标准（如MPEG-2）在编码效率上具有重大的改进，它改进了现有的MPEG-2等技术，并比MPEG-2和MPEG-4在感知质量上有真正的提升，H.264/AVC作为新一代标准大大降低了在有线、卫星和电信网络传送广播级质量视频的成本。产品结构思华公司的H.264/AVC编码器以实时方式进行压缩，达到Full D1标准解析度，运营商可以在现有的基础设施的基础上传送更多高质量的内容，为数字电视和IPTV的大力推广提供良好的技术支撑。如上图所示，信号源接入H.264实时编码器以后，编码器具有两种输出：一、
37、编码器可以输出文件，进行编排以后发布给用户；二、编码器进行实时转码输出实时流给流媒体服务器、CDN或客户端。事实上，这两种输出可以同时使用，编码器在输出实时流的同时也可以保存相应的媒体文件。系统在实时编码的同时，也可以对视频和音频进行部分处理，如分辨率调整、亮度、色度、对比度调整、音量调整等。产品优势该系统为用户提供实时的H.264转换功能，系统具有如下特点：l 支持MPEG-4高级视频编码（AVC/H.264），Main 和 Baseline Profiles， MPEG-4, Part 2，简单层（SP）和高级简单层（ASP）视频编码；l 56KB/s-3MB/s尽可能好的图像质量；l QCIF到Full D1 NTSC / PAL分辨率；l 音频编码支持AMR、AAC；l 各种视频预处理，包括降噪、分辨率转换、专业质量去隔行；l 完全支持高级 H.264 编码方式，如优化速率失真、MBAFF、CABAC、CAVLC等； SIMD 支持大多数的时间不变性运算；6、 哈雷（Harmonic）DiviCom Encoders7、 Skystream8、 科学亚特兰大9、 Tandberg10、 Thomson11、 Optibase
