彩票走势图

当您获得DVR SDK Module作为MPEG-2 Transport SDK Module一部分时，您将获的最全面的支持。MPEG-2 Transport SDK Module为MPEG-2 Transport和MPEG-2程序文件提供DVR支持。

LEADTOOLS DVR SDK Module只为MPEG-2程序文件提供DVR支持。

LEADTOOLS DVR SDK Module概述

• LEAD DVR Sink

• LEAD DVR Source

• LEAD MPEG-2 Multiplexer和DemultiplexerLEAD MPEG-2 Multiplexer：

• MPEG-1 (ISO/IEC 11172-3)

• AC3 (DVD首选的音频压缩格式)

• LPCM (未压缩的DVD音频格式)

• AAC (MP4首选的音频压缩格式)  

• MPEG1 (ISO/IEC 11172-2)

• MPEG2 (ISO/IEC 13818-2)

• MPEG4 (ISO/IEC 14496-2)

• H.264 (ISO/IEC 14496-10)

• 创建MPEG-2程序文件。

• 支持的视频压缩：

• 支持的音频压缩：

             LEAD MPEG-2 Demultiplexer：

• 解析以下流：

• MPEG-2 Program specified in ISO/IEC 13818-1

• MPEG-1 System specified in ISO/IEC 11172-1

• Elementary stream data (又称为原始视频或原始音频数据)

• MPEG-2 Program 在ISO/IEC 13818-1中指定的流

• MPEG-1 System在ISO/IEC 11172-1中指定的流

• 基本流数据(又称为原始视频或原始音频数据)

• 支持的视频压缩：

• MPEG1 (ISO/IEC 11172-2)

• MPEG2 (ISO/IEC 13818-2)

• MPEG4 (ISO/IEC 14496-2)

• H.264 (ISO/IEC 14496-10)

• 支持的音频压缩：

• MPEG-1 (ISO/IEC 11172-3)

• AC3 (DVD首选音频压缩格式)

• LPCM (未压缩的DVD音频格式)

• AAC (MP4首选的音频压缩格式)

• LEAD Video Frame Rate Control Filter

• 过滤器提供更改通过的视频流的帧的速率。

• LEAD Video Crop Filter
  只在视频中的一个指定的矩形区域中播放，转换或捕获。

• LEAD Video Deinterlace Filter
  使用一种模式消除视频隔行扫描，消除只感兴趣的一个区域的隔行扫描（矩形），以及在视频中指定的片段的隔行扫描的消除和怎样消除片段中的隔行扫描（没有消除隔行扫描，隔行扫描，使用一种模式消除隔行扫描）。包含一个“自动消除隔行扫描”选项用于检测视频以消除隔行扫描以及仅当需要是应用消除隔行扫描功能。

• LEAD Video Resize Filter
  使用常规的调整大小，双线性重采样，双三次或布莱森汉姆插值方法调整帧的宽度和高度，用这种方法来调整视频的大小。

• LEAD Video Rotation Filter
  翻转，反向，旋转视频90,180和270度。当在某些设备处于旋转状态捕获视频时非常有用。

• LEAD MPEG-2 编码器和解码器

• 轻松创建1080和720 HDTV视频。

• MPEG-1 和MPEG-2 流

• 低，主要和高配置文件实现。

• 具有1/2像素的精确度的帧内预测。

• 预处理帧速率调整。

• 具有一个质量因子范围的固定和可变的比特率压缩选项。

• 为VCD,SVCD和DVD预设的压缩选项。

• LEAD MPEG-4 编码器和解码器

• 支持线性和非线性量化。

• 支持帧率调整。

• 提供三种输出格式：MP4V (标准), LMP4, 和 XVID。LMP4是LEAD的专有的MPEG-4视频格式，其中包含的选项用于获得更好的压缩性能。

• 可配置的移动估计参数。

• LEAD H264编码器和解码器

• 用于平滑损坏的视频数据的回放的机制。

• 当与其他H.264编码器相比时，LEAD的超级压缩选项以一种创新的方式使用H.264标准压缩，以便于使用更少的资源产生非常小的流。它具备的这种“超级”的性能使得它能够实时编码H.264流而不需要额外的硬件或过多的CPU使用率。这使得这种超级压缩选项对于视频会议应用非常理想。

• 实时播放高清定义格式(720p 和1080i)。

• 用户可定义的移动估计参数设置控制编码器速度和质量的平衡。

• 多种过去和未来帧的任意组合的参考帧，提供精确的帧内预测，以及在流超过网络或互联网的处理能力时出现的丢包时提高可靠性。

• 使用参考帧的无限制的移动搜索通过预测丢失的数据可以丢失部分帧，以提高网络性能。

• 只保存各移动向量之间的不同，提高压缩比。

• 帧内预测能够在4x4或16x16的块上运行。

• 移动向量预测是在帧被准备压缩前（pre-DCT）执行以提高预测和压缩性能。

• 一个上下文感知的解块过滤器平滑外部与内部的边缘，大大提高了视频的视觉质量。

• 拥有上下文自适应的变长编码（CAVLC）编码转换系数。

• 上下文自适应二进制算术编码（CABAC）方法不断更新接受数据的频率统计信息并自适应地调节算法，提高压缩性能。

• 编码到视频流的帧类型的数量的控制。

• LEAD MPEG 音频编码器

• 使用MPEG-1 Layer2音频压缩标准(ISO/IEC 11172-3)压缩音频数据

• 能够在一个MPEG-1或MPEG-2文件中多路复用。

• 创建MPEG-1或MPEG-2 DVD文件。

• LEAD AAC编码器和解码器

• 支持可变的和固定比特率。

• 输出通道原则。

• 环绕功能。

• 支持AAC，MPEG-4和MPEG-2版本。

• 支持低复杂度，主流及长期的预测概要文件。

• 支持两种流格式；Raw和ADTS。

• 输出采样频率选择。

• 截止频率选项。

• 可选择的强度立体声输出。

产品演示

EADTOOLS DVR SDK Module包含有具有源代码的产品显示程序，有助于启动您自己的开发项目。

• DVR demo

LEADTOOLS DVR SDK Module无缝地添加DVR技术到

• LEADTOOLS Multimedia SDK

The most comprehensive support is available when you get the DVR SDK Module as part of the MPEG-2 Transport SDK Module. The MPEG-2 Transport SDK Module provides DVR support for MPEG-2 Transport and MPEG-2 Program files.

The LEADTOOLS DVR SDK Module provides DVR Support for MPEG-2 Program files only.

Overview of LEADTOOLS DVR SDK Module

• LEAD DVR Sink
  The LEADTOOLS DVR Sink filter uses LEAD's intelligent time-shifting algorithm to write live video/audio streams to disk for playback. Developers have complete control of the buffer size including support to have the buffer span more than one disk.
• LEAD DVR Source
  The LEADTOOLS DVR Source filter reads video and audio streams from files created by the LEADTOOLS DVR Sink filter. With the DVR Source filter, the LEADTOOLS Player control can play, pause, rewind and fast forward live streams.
• LEAD MPEG-2 Multiplexer and Demultiplexer
  LEAD MPEG-2 Multiplexer：
  • Create MPEG-2 program files.
  • Supported video compressions:
    • MPEG1 (ISO/IEC 11172-2)
    • MPEG2 (ISO/IEC 13818-2)
    • MPEG4 (ISO/IEC 14496-2)
    • H.264 (ISO/IEC 14496-10)
  • Supported audio compressions:
    • MPEG-1 (ISO/IEC 11172-3)
    • AC3 (preferred audio compression for DVDs)
    • LPCM (uncompressed DVD audio)
    • AAC (preferred audio compression for MP4)
  LEAD MPEG-2 Demultiplexer：
  • Parses the following streams:
    • MPEG-2 Program specified in ISO/IEC 13818-1
    • MPEG-1 System specified in ISO/IEC 11172-1
    • Elementary stream data (also known as raw video or raw audio data)
  • Supported video compressions:
    • MPEG1 (ISO/IEC 11172-2)
    • MPEG2 (ISO/IEC 13818-2)
    • MPEG4 (ISO/IEC 14496-2)
    • H.264 (ISO/IEC 14496-10)
  • Supported audio compressions:
    • MPEG-1 (ISO/IEC 11172-3)
    • AC3 (preferred audio compression for DVDs)
    • LPCM (uncompressed DVD audio)
    • AAC (preferred audio compression for MP4)
• LEAD Video Frame Rate Control Filter
  The Frame Rate Control filter provides changes the frame rate of the passing video stream.
• LEAD Video Crop Filter
  Play, convert or capture only a specific rectangular area within the video.
• LEAD Video Deinterlace Filter
  Deinterlaces video with a pattern, deinterlaces only a region of interest (rectangle), and specifies segments in the video to deinterlace and how to deinterlace the segment (no deinterlace, interlace, deinterlace with pattern). Includes an “Auto Deinterlace” option to check the video for interlacing and apply deinterlacing only if necessary.
• LEAD Video Resize Filter
  Resizes the video by adjusting the width and height of the frames using normal resize, resample bilinear, bicubic or Bresenham interpolation.
• LEAD Video Rotation Filter
  Flips, reverses, rotates video 90, 180, and 270 degrees. Very useful when certain devices capture video in a rotated state.
• LEAD MPEG-2 Encoder and Decoder
  • Easily create 1080 and 720 HDTV video.
  • MPEG-1 and MPEG-2 streams.
  • Low, main & high profiles implementation.
  • Inter-prediction accuracy of 1/2 pixel.
  • Preprocessing frame-rate adjustment.
  • Fixed and variable bit rate compression options with a wide range of quality factors.
  • Preset compression options for VCD, SVCD and DVD.
• LEAD MPEG-4 Encoder and Decoder
  • Supports linear and nonlinear quantization.
  • Supports frame rate adjustment.
  • Delivers 3 output formats: MP4V (standard), LMP4, and XVID. LMP4 is LEAD’s proprietary MPEG-4 video and includes options to achieve better compression performance.
  • Configurable motion estimation.
• LEAD H264 Encoder and Decoder
  • Mechanism for smoother playback of corrupted video data.
  • LEAD’s super compression option uses H.264 standard compression in an innovative way to produce super small streams using less resources when compared to other H.264 encoders. With this “super” performance it is possible to stream H.264 compatible videos in real time without additional hardware or excessive CPU usage making the super compression option ideal for video conference applications.
  • Play high definition formats (720p and 1080i) in real time.
  • User definable motion estimation settings controls the balance between encoder speed and quality.
  • Multiple reference frames of any combination of past and future frames, providing precise interprediction as well as improved robustness during packet loss while streaming over the network or Internet.
  • Unrestricted motion search uses reference frames that may be partly outside the frame improving network performance by predicting missing data.
  • Only the difference between motion vectors is saved, increasing the compression ratio.
  • Intraprediction may be performed either on 4x4 blocks or 16x16.
  • Motion vector prediction is performed before the frame is prepared for compression (pre-DCT) improving prediction and compression performance.
  • A context-sensitive deblocking filter smoothes out internal edges, significantly improving the visual quality of the video.
  • Employs Context-Adaptive Variable Length Coding (CAVLC) to encode transform coefficients.
  • The Context-Adaptive Binary Arithmetic Coding (CABAC) method continually updates frequency statistics of the incoming data and adaptively adjusts the algorithm, improving compression performance.
  • Control of the number of frame types encoded into the video stream.
• LEAD MPEG Audio Encoder
  • Compress audio data using the MPEG-1 Layer 2 audio compression standard (ISO/IEC 11172-3).
  • Can be multiplexed into an MPEG-1 or MPEG-2 file.
  • Create MPEG-1 or MPEG-2 DVD files.
• LEAD AAC Encoder and Decoder
  • Supports both variable and constant bitrates.
  • Output channels selection.
  • Surround feature.
  • Supports both versions of AAC, MPEG-4 and MPEG-2.
  • Supports Low Complexity, Main, and Long Term Prediction profiles.
  • Supports 2 stream formats; Raw and ADTS.
  • Output sample frequency selection.
  • Cut-off frequency option.
  • Optionally force stereo output.

Product Demos

LEADTOOLS DVR SDK Module includes demos with source code to help you get started with your own development project.

• DVR demo

LEADTOOLS DVR SDK Module Seamlessly Adds DVR Technology to

• LEADTOOLS Multimedia SDK