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REAL PLAYER 影音播放系統. 在網上收聽收看實時 Audio 、 Video 和 Flash 的最佳工具。用 RealPlayer 可欣賞 網上在線音頻和視頻資料。 在網上收聽收看實時 Audio 、 Video 和 Flash 的最佳工具。用 RealPlayer 可欣賞 網上在線音頻和視頻資料。

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Presentation on theme: "REAL PLAYER 影音播放系統. 在網上收聽收看實時 Audio 、 Video 和 Flash 的最佳工具。用 RealPlayer 可欣賞 網上在線音頻和視頻資料。 在網上收聽收看實時 Audio 、 Video 和 Flash 的最佳工具。用 RealPlayer 可欣賞 網上在線音頻和視頻資料。"— Presentation transcript:

1 REAL PLAYER 影音播放系統

2 在網上收聽收看實時 Audio 、 Video 和 Flash 的最佳工具。用 RealPlayer 可欣賞 網上在線音頻和視頻資料。 在網上收聽收看實時 Audio 、 Video 和 Flash 的最佳工具。用 RealPlayer 可欣賞 網上在線音頻和視頻資料。 帶有目標按紐,只需單擊滑鼠就可收聽新 聞和娛樂資訊;近乎 CD 一樣的音頻效果 帶有目標按紐,只需單擊滑鼠就可收聽新 聞和娛樂資訊;近乎 CD 一樣的音頻效果 全屏播放圖像功能(只適用於高帶寬連接 情況)。 全屏播放圖像功能(只適用於高帶寬連接 情況)。

3 基本功能介紹 可播放 50 種以上的檔案類型,包括: Windows Media 、 Quicktime 和 DVD 可播放 50 種以上的檔案類型,包括: Windows Media 、 Quicktime 和 DVD 包括進階 CD 燒錄功能 - 可建立自定 MP3 CD 包括進階 CD 燒錄功能 - 可建立自定 MP3 CD 具有頂級音訊與視訊控制功能 - 圖形等化 器 、淡出淡入 、亮度與對比控制 具有頂級音訊與視訊控制功能 - 圖形等化 器 、淡出淡入 、亮度與對比控制 使用工具列模式可最大化桌面空間 使用工具列模式可最大化桌面空間 可存取全世界 3 , 000 多家廣播電台! 可存取全世界 3 , 000 多家廣播電台!

4 其他功能包括:內容頻道,自動升級功能, SmartStream 技術消除了再次緩衝,尋 找媒介鏈結,支援 MP3 格式等。 其他功能包括:內容頻道,自動升級功能, SmartStream 技術消除了再次緩衝,尋 找媒介鏈結,支援 MP3 格式等。

5 STREAM 串流概念介紹 將一連串的影像壓縮後,經過網際網路分 段傳送資料,在網路上即時傳輸影音以供 觀賞的一種技術與過程;串流傳輸可傳送 現場影音或預存於伺服器上的影片,當觀 看者在收看這些影音檔時,影音資料在送 達觀賞者的電腦後立即由特定播放軟體播 放 ( 如 Windows Media Player, Real Player, 或 QuickTime Player) 。 將一連串的影像壓縮後,經過網際網路分 段傳送資料,在網路上即時傳輸影音以供 觀賞的一種技術與過程;串流傳輸可傳送 現場影音或預存於伺服器上的影片,當觀 看者在收看這些影音檔時,影音資料在送 達觀賞者的電腦後立即由特定播放軟體播 放 ( 如 Windows Media Player, Real Player, 或 QuickTime Player) 。

6 ◎串流格式之優缺點比較 優點 即時播放 即時播放 影片資料不易被複製 影片資料不易被複製 不佔硬碟空間 不佔硬碟空間 收看者即時隨點隨看 收看者即時隨點隨看

7 缺點 傳輸品質不佳、畫面失真 傳輸品質不佳、畫面失真 為配合數據機或區域網連線的大小,必須壓 縮及放棄多餘的影像資料,造成顆粒狀或 模糊影像及間斷之聲音 為配合數據機或區域網連線的大小,必須壓 縮及放棄多餘的影像資料,造成顆粒狀或 模糊影像及間斷之聲音

8 RealVideo 10 Compression KEY FEATURES OF REALVIDEO 10KEY FEATURES OF REALVIDEO 10 THE REALVIDEO 10 COMPRESSION ALGORITHMTHE REALVIDEO 10 COMPRESSION ALGORITHM THE REALVIDEO 10 ENCODERTHE REALVIDEO 10 ENCODER

9 Bitrate Very often used when speaking of video or audio quality -- defines how much physical space one second of audio or video takes in bits (note: not in bytes) Very often used when speaking of video or audio quality -- defines how much physical space one second of audio or video takes in bits (note: not in bytes)

10 KEY FEATURES OF REALVIDEO 10 Broad reach — Compatible with all RealVideo 9 decoders No RealOne ™ Player update is needed to play RealVideo 10 content No RealOne ™ Player update is needed to play RealVideo 10 content Same system, processor requirements for playback as the previous generation RealVideo 9 Same system, processor requirements for playback as the previous generation RealVideo 9 Also plays back in RealPlayer 10 Also plays back in RealPlayer 10

11 Unparalleled quality — State-of- the-art video at all bit rates Same Quality at 30% lower bitrate than RealVideo 9 Same Quality at 30% lower bitrate than RealVideo 9 Same Quality at 80% lower bitrate than MPEG-2 Same Quality at 80% lower bitrate than MPEG-2 Same Quality at 75% lower bitrate than HDTV Same Quality at 75% lower bitrate than HDTV Same Quality at 45% lower bitrate than MPEG-4 (ASP) Same Quality at 45% lower bitrate than MPEG-4 (ASP) Same Quality at 30% lower bitrate than WMV 9 Same Quality at 30% lower bitrate than WMV 9 Same Quality at 15% lower bitrate than H.264 Same Quality at 15% lower bitrate than H.264

12 Cross Platform — Available for playback in multiple environments Microsoft Windows, Intel Processor (MMXTM, SSETM, SSE2TM) Microsoft Windows, Intel Processor (MMXTM, SSETM, SSE2TM) Linux, Intel Processor (MMXTM, SSETM, SSE2TM) Linux, Intel Processor (MMXTM, SSETM, SSE2TM) Mac OS, PowerPC Processor (AltiVecTM) Mac OS, PowerPC Processor (AltiVecTM) WinCE, ARM Processor (ARMv4, StrongARM, XScaleTM) WinCE, ARM Processor (ARMv4, StrongARM, XScaleTM) Symbian, ARM Processor (ARMv4, StrongARM, XScaleTM) Symbian, ARM Processor (ARMv4, StrongARM, XScaleTM) MIPS Processor (NEC vr5500) MIPS Processor (NEC vr5500)

13 Any Device — Extends Internet media across the spectrum of devices from mobile to TV, PC, HDTV and beyond. HDTV Ready — supports all HD formats and resolutions including 720p and 1080i HDTV Ready — supports all HD formats and resolutions including 720p and 1080i Interlaced Support — The RealVideo 10 bitstream can carry 60 fields per second interlaced content Interlaced Support — The RealVideo 10 bitstream can carry 60 fields per second interlaced content

14 THE REALVIDEO 10 COMPRESSION ALGORITHM Highly accurate motion modeling Highly accurate motion modeling Proprietary spatial pixel prediction methods Proprietary spatial pixel prediction methods Multi-resolution residual analysis/synthesis stage Multi-resolution residual analysis/synthesis stage Context adaptive entropy coding Context adaptive entropy coding Psycho-visually tuned segmentation and filtering schemes Psycho-visually tuned segmentation and filtering schemes Rate-Distortion optimized encoding algorithms Rate-Distortion optimized encoding algorithms Two-Pass encoding Two-Pass encoding

15 The RealVideo 10 Decoder

16 THE REALVIDEO 10 ENCODER To accommodate these applications the RealVideo 10 encoder supports the following encoding modes: To accommodate these applications the RealVideo 10 encoder supports the following encoding modes: Constant Bitrate Constant Bitrate Variable Bitrate (with a possible maximum constrained bitrate) Variable Bitrate (with a possible maximum constrained bitrate) Quality-Based Encoding (with a possible maximum constrained bitrate) Quality-Based Encoding (with a possible maximum constrained bitrate)

17 Real player usage Education Education Enterprise Enterprise Government Government Service Providers Service Providers Resource Library Resource Library

18 Education Universities, colleges, local school districts and other educators are discovering easy-to-use content creation, delivery and playback products and services from Real to communicate with employees, other institutions and students. Universities, colleges, local school districts and other educators are discovering easy-to-use content creation, delivery and playback products and services from Real to communicate with employees, other institutions and students.

19 Case Study Thomas Telford School has developed a well-respected online curriculum employing digital media technology from Real. Thomas Telford School has developed a well-respected online curriculum employing digital media technology from Real. Watch Case Study Watch Case Study Watch Case Study Watch Case Study

20 Enterprise Financial services, health care, high- tech and other enterprises are improving communication, increasing productivity and reducing costs with Real's complete universal media delivery system. Financial services, health care, high- tech and other enterprises are improving communication, increasing productivity and reducing costs with Real's complete universal media delivery system.

21 Case study MasterCard International saves over $10,000 per company meeting using streaming media technology from Real. Watch this streaming video case study to find out how. MasterCard International saves over $10,000 per company meeting using streaming media technology from Real. Watch this streaming video case study to find out how. Watch Case Study Watch Case Study Watch Case Study Watch Case Study

22 Government Federal, state and local government agencies are training employees, and communicating with constituents with Real's scalable and secure media delivery system. Federal, state and local government agencies are training employees, and communicating with constituents with Real's scalable and secure media delivery system.

23 Resource Library To help professionals responsible for streaming media initiatives make informed decisions, we have gathered together a library of resources that includes case studies, application demos, product literature, online seminars and more. To help professionals responsible for streaming media initiatives make informed decisions, we have gathered together a library of resources that includes case studies, application demos, product literature, online seminars and more.

24 Realvideo10 Quality compare the bitrates required to achieve the same level of fidelity using RealVideo 10 and other popular video formats.

25 Comparison Fidelity( Fidelity(Peak Signal-to-Noise Ratio, PSNR) PSNR) Bitrate Bitrate Encoder Speed Encoder Speed

26 RealVideo 10 provides the same, or better, visual quality using 30% lower bitrate. (Images from the “Foreman” clip, encoded at 352x288)

27 Low action

28 Moderate action

29

30

31

32

33

34 RealVideo 10 Scalability

35 The Helix ™ platform (Producer, Server and Client) features RealNetworks ’ SureStream ™ technology. The Helix ™ platform (Producer, Server and Client) features RealNetworks ’ SureStream ™ technology.

36 Using the Helix Producer, multiple target bitrates can be selected and audio and video streams appropriate for those target bitrates are encoded. Using the Helix Producer, multiple target bitrates can be selected and audio and video streams appropriate for those target bitrates are encoded.

37 When streamed over a network, the RealOne ™ Player and Helix Universal Server communicate the appropriate audio and video streams to be transmitted. When streamed over a network, the RealOne ™ Player and Helix Universal Server communicate the appropriate audio and video streams to be transmitted.

38 All of the typical means of scalability (spatial, temporal and quality) are utilized in our SureStream technology. All of the typical means of scalability (spatial, temporal and quality) are utilized in our SureStream technology.

39 When selecting multiple target bitrates for the encoding of a piece of content, each bitrate selection represents an independently decodable stream. When selecting multiple target bitrates for the encoding of a piece of content, each bitrate selection represents an independently decodable stream.

40 Each of these streams may be encoded at different resolutions, frame rates and image fidelities. Each of these streams may be encoded at different resolutions, frame rates and image fidelities. And because there are no dependencies between streams, each stream can be encoded at a frame size, frame rate and quality level optimized for that bitrate. And because there are no dependencies between streams, each stream can be encoded at a frame size, frame rate and quality level optimized for that bitrate.

41 RealVideo 10 Error Resiliency RealVideo 10 Error Resiliency

42 Error resiliency is a major component of our media delivery platform. Error resiliency features implemented in our platform include: Error resiliency is a major component of our media delivery platform. Error resiliency features implemented in our platform include:

43 1.The ability to dynamically set FEC packet insertion rates at nearly every stage of the delivery network, from Producer to Server, Server to Server, Server to Proxies, Proxies to Clients, etc. 1.The ability to dynamically set FEC packet insertion rates at nearly every stage of the delivery network, from Producer to Server, Server to Server, Server to Proxies, Proxies to Clients, etc.

44 2.Automatic retransmission requests allow clients to resend data packets that are lost. 2.Automatic retransmission requests allow clients to resend data packets that are lost.

45 3.The ability to enable error resiliency modes in our RealVideo family of codecs. 3.The ability to enable error resiliency modes in our RealVideo family of codecs.

46 RealVideo 10 Decoder Performance RealVideo 10 Decoder Performance

47 Since RealVideo 10 is designed for use on a wide variety of clients with very different performance capabilities, RealVideo 10 has built-in CPU scalability in both the encoder and decoder that allows the faster processing of video if needed. Since RealVideo 10 is designed for use on a wide variety of clients with very different performance capabilities, RealVideo 10 has built-in CPU scalability in both the encoder and decoder that allows the faster processing of video if needed.

48 CPU USAGE The encoder/decoder complexity is asymmetric with the difference in complexity between the encoder and decoder near a factor of 3-5 times under normal (default) encoder and decoder operation. The encoder/decoder complexity is asymmetric with the difference in complexity between the encoder and decoder near a factor of 3-5 times under normal (default) encoder and decoder operation.

49 1.CIF or QCIF for dial-up connections – For playback of typical content for dial-up speeds (176 x 132), a 200 MHz Pentium II (or better) is recommended. 1.CIF or QCIF for dial-up connections – For playback of typical content for dial-up speeds (176 x 132), a 200 MHz Pentium II (or better) is recommended. CIF 是 352*288 大小的影像 CIF 是 352*288 大小的影像 QCIF(176*144) QCIF(176*144) SIF 大小 (240x160 ) SIF 大小 (240x160 )

50 2.Full Screen – For playback of 640 x 480 video at full 24 fps (for film) or 30 fps (for video), a 750 MHz Pentium III (or better) is recommended. 2.Full Screen – For playback of 640 x 480 video at full 24 fps (for film) or 30 fps (for video), a 750 MHz Pentium III (or better) is recommended.

51 3.HDTV – For playback of HD- resolution content (e.g. 720p), a 2.6 GHz Pentium 4 (or better) is recommended. 3.HDTV – For playback of HD- resolution content (e.g. 720p), a 2.6 GHz Pentium 4 (or better) is recommended.

52 TABLE 1: RealVideo 10 CPU performance, with zero-wait memory Simulation using ADS 1.2 developer tools, with zero-wait memory Bitrate Image Size Frame Rate Contes t Type ARM92 5 XScale 30 Kbps QCIF15fps Low Action 10.8M Hz 10.7M Hz 48KpsQCIF15fps Modera te Action 25.4M Hz 25.6M Hz 250Kp s SIF25fps High Action MHz MHz 200Kp s CIF30fps Modera te Action MHz MHz 600Kp s CIF30fps Modera te Action MHz MHz

53 TABLE 2: RealVideo 10 decoder CPU usage on XScale™ Machine = ARM XScale, PXA255, iPAQ H5550, 400 MHz Bitrate Image Size Frame Rate Content Type CPU Usage 30 Kbps QCIF 15 fps Low Action 22.9 MHz 48 Kbps QCIF 15 fps Moderat e Action 39.2 MHz 250 Kbps SIF 25 fps High Action MHz 200 Kbps CIF 30 fps Moderat e Action MHz 600 Kbps CIF 30 fps Moderat e Action MHz

54 TABLE 3: RealVideo 10 CPU usage on a 1.4 GHz, Pentium™ 4 Machine = Pentium 4, 1.4 GHz Bitrate Image Size Frame Rate Content Type CPU Usage 48 Kbps CIF 30 fps Low Action 81.9 MHz 100 Kbps CIF 30 fps Moderate Action MHz 300 Kbps QVGA 30 fps Mixed Action MHz 800 Kbps CIF 30 fps Moderate Action MHz 1.5 Mbps CIF 30 fps Moderate Action MHz

55 MEMORY USAGE The memory usage of the RealVideo 10 decoder is dependent on the image size of the video being decoded. Table 4 presents the effective memory usage for several popular resolutions. The memory usage of the RealVideo 10 decoder is dependent on the image size of the video being decoded. Table 4 presents the effective memory usage for several popular resolutions.

56 TABLE 4: RealVideo 10 memory usage Image Size Code Size RAM2 All RAM3 QCIF 172 KB 147 KB 257 KB CIF 172 KB 315 KB 868 KB

57 未來展望 Real Player 加入 Google Bar Real Player 加入 Google Bar RealNetworks RealNetworks 宣佈他們將在他們的旗艦產品 Real Player 10 ,加入 Google Bar 。在功能上,加入 了搜尋 Digital Media 的功能,用戶就更加方便。 在合作意義上,當然就 RealNetworks 這幾年都好 像被微軟力壓,加入 Google Bar 就是利用 Google 這大紅大紫的名稱,希望以 Real Player 10 重新 上路 。

58 我們可以預期在未來, REAL Player 也會 加入 MSN 的搜尋元素。若可以將 MSN 的 Search Engine ,結合 MSN Messenger 的 Alert 功能,那就更好。比如說,我喜歡 Jon Bon Jovi 的話,我可在 Windows Media Player 內搜尋他們的歌,以後當在 Media Guide 上有這歌手的新歌 / MTV 時, 便透過 MSN Messenger Alert 我們可以預期在未來, REAL Player 也會 加入 MSN 的搜尋元素。若可以將 MSN 的 Search Engine ,結合 MSN Messenger 的 Alert 功能,那就更好。比如說,我喜歡 Jon Bon Jovi 的話,我可在 Windows Media Player 內搜尋他們的歌,以後當在 Media Guide 上有這歌手的新歌 / MTV 時, 便透過 MSN Messenger Alert

59 RealNetworks 的新消息 另外,他們宣佈了一款新的 Final Cut Plugin ,名為 Real(TM) 10 Export Plug- in for Mac OS X ,讓 Final Cut 的用戶可 以直接輸出 RealAudio 10 或 RealVideo 10 格式的媒體。 另外,他們宣佈了一款新的 Final Cut Plugin ,名為 Real(TM) 10 Export Plug- in for Mac OS X ,讓 Final Cut 的用戶可 以直接輸出 RealAudio 10 或 RealVideo 10 格式的媒體。


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