New Canon MPEG-2 Codec Full HD (4:2:2) 50 Mbps

charleswu

<P>Canon 終於推出了自家的Codec，總算是跨出了一大步，這一步所代表的意義相信大家都很清楚</P>
<P>出乎預期的，Canon今年新出的無帶化業務機應該也會採用此Codec，而不是AVCHD，這樣或許能帶來一些競爭力</P>
<P><FONT style="BACKGROUND-COLOR: #e1e4e5">來源：<FONT style="BACKGROUND-COLOR: #ffffff"><A href="http://www.canon.com/news/2010/feb02e.html">http://www.canon.com/news/2010/feb02e.html</A></FONT></FONT></P>
<P>&nbsp;</P>
<H3>Canon adopts MPEG-2 Full HD (4:2:2) file-based recording codec for upcoming professional video camcorder </H3>
<P><SPAN style="FONT-STYLE: italic">New Canon MPEG-2 Codec chosen for file-based professional video camcorder promises compatibility with industry-standard editing &amp; processing software </SPAN></P>
<P><SPAN style="FONT-STYLE: italic"></SPAN>&nbsp;</P>
<P>TOKYO, February 2, 2010—Canon Inc. announced today the Company has adopted an MPEG-2 Full HD (4:2:2) file-based recording codec for a new professional video camcorder currently under development. The Canon MPEG-2 Codec will enable high-quality imaging and audio performance with up to 50 Mbps data recording and twice the color data of HDV<SUP><FONT size=2>*1</FONT></SUP> profile formats. File-based recording helps video operations realize greater efficiencies during post-production processing, making it an ideal format for many industry applications such as newsgathering, documentary filmmaking and event videography. </P>
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<LI><SPAN style="FONT-WEIGHT: bold">MPEG-2 Full HD compression and 4:2:2 color sampling</SPAN> <BR>The adoption of MPEG-2 Full HD (MPEG-2 4:2:2P@HL compliant) compression enables the recording of 1,920 x 1,080-pixel full high-definition video. Additionally, compared with the 4:2:0 profile format used in HDV and other standards, 4:2:2 color sampling offers twice the volume of color data, providing double the level of color resolution. </LI>
<LI><SPAN style="FONT-WEIGHT: bold">Maximum 50 Mbps data recording</SPAN> <BR>With approximately twice the data volume of HDV, the Codec supports higher resolution and increased color data to enable the recording of high-quality video. </LI>
<LI><SPAN style="FONT-WEIGHT: bold">Industry-standard MXF<SUP><FONT size=2>*2</FONT></SUP> file format</SPAN> <BR>MXF (Material eXchange Format) is a widely supported open source file format for the recording of video and audio and metadata, developed to suit the latest editing systems used by broadcasters. </LI></UL>
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<H4>Canon partners with major editing and processing software</H4>
<P>With the adoption of the MPEG-2 Full HD (4:2:2) file-based recording codec, Canon is working in cooperation with Adobe Systems Incorporated, Apple Inc., Avid Technology, Inc. and Grass Valley to ensure compatibility with major editing and processing software programs widely used within the video imaging industry. Additionally, at future industry events, Canon intends to demonstrate the overall video-production workflow, from initial video capture to clip-trimming and final editing, with video clips stored in a file-based recording system and using industry-standard software applications. </P>
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<DIV style="BORDER-BOTTOM: #909090 0px solid; BORDER-LEFT: #909090 0px solid; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; BORDER-TOP: #909090 0px solid; BORDER-RIGHT: #909090 0px solid; PADDING-TOP: 0px"><SPAN style="FONT-STYLE: italic; FONT-WEIGHT: bold">Advantages of File-Based Recording </SPAN><BR>File-based recording enables video and audio data to be managed and stored by file, much in the same way as computer data. It supports efficiency throughout the production process, from initial video capture to final editing through the entire workflow. Additionally, file-based recording provides users with the flexibility to utilize different editing environments and workflow solutions without the restrictions associated with some other video recording formats, helping to reduce investment costs. </DIV>
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<TABLE style="LINE-HEIGHT: 14px; FONT-SIZE: 11px" border=0 cellSpacing=0 cellPadding=3 width="100%">
<TBODY>
<TR height=1 vAlign=top>
<TH width="4%"></TH>
<TH width="96%"></TH></TR>
<TR vAlign=top>
<TD align=left>*1 </TD>
<TD>HDV is a standard for the recording and playback of high definition (1,440 x 1,080 pixels) video and audio on DV-format cassette tapes </TD></TR>
<TR vAlign=top>
<TD align=left>*2 </TD>
<TD>A format for professional digital video and audio media defined by the Society of Motion Picture and Television Engineers (SMPTE) </TD></TR></TBODY></TABLE></DIV>

[ 本帖最後由 charleswu 於 2010-2-3 11:36 編輯 ]

ljing

這是否意味著影片剪接編輯會容易多了,目前5D II 或是 XR520拍的都只能先用TMPGENC轉成32Mbps的Mpeg2再來剪接,感謝分享這訊息,期待中!

citidisk

終於看到Canon的出手. 就不知錄製單元?? <br>會是CF 卡嗎?? 如果是cf 卡 , 用333x以上即可.<br><br>同時使用4:2:2&nbsp; 50Mb/s 應該較AVCHD好剪輯吧.<br><br>現在看來高解析HD的混戰又開始了.<br>720P---&gt;1080P,<br>攝影機的編解碼有<br>HDV, DVCproHD, AVCtra, xdcam ex......., AVCHD,...<br>不知有先進可再補充一些<br>謝謝<br><br>

core

<div>我比較希望是</div><div>用SDXC卡</div><div><br></div><div>何謂SDXC:</div><div>全名為Secure Digital eXtended Capacity，在CES 2009正式發表。因為SDHC有最大容量32GB的限制，在改用格式為exFAT後，理論容量可以達到2TB，傳輸理論上可以達到300MB/s，各家儲存裝置廠商皆慢慢開始推出相關產品。</div><div><br></div>

charleswu

<P>我認為Canon在專業機採用CF卡的機率比較大，而在小型民用機才會用SDXC，跟目前DSLR的分級類似</P>
<P>&nbsp;</P>
<P>我貼這一個主題的另一個原因，是猜想Canon下一代的HD DSLR（5D3??）是否有可能採用此codec？？</P>
<P>由於H.264的演算法複雜許多，目前以處理靜態影像為主的Canon DIGIC 4僅能用偷吃步的方式將動畫影像調整為堪用的程度</P>
<P>下一代的影像處理晶片DIGIC 5不可能出現飛躍式的進步，變成一下子就能處理好H.264的複雜運算</P>
<P>因此將codec改為運算程度較不複雜的mpeg 2，則可能是一個較為可行的解決方案</P>
<P>使用mpeg 2另外一個好處當然就是比較方便剪輯，未來剪輯軟體的支援度應該不是問題</P>
<P>codec一旦確立就會使用好幾年，可以預期的是未來Canon的動畫錄影產品應該都會陸續採用此規格，可能也包含下一代DSLR</P>
<P>所以我認為現今的HD DSLR只是一個過渡產品，可以拍攝沒問題，至於能不能用，就見仁見智了</P>
<P><FONT style="BACKGROUND-COLOR: #e1e4e5"></FONT>&nbsp;</P>
<P><FONT style="BACKGROUND-COLOR: #e1e4e5"></FONT>&nbsp;</P>

core

星星王子<div><br></div><div>小弟還有問題</div><div><br></div><div>CF II 是 FAT32 只能單檔 4G</div><div><br></div><div>會有 CF III 新規格(for&nbsp;<span class="Apple-style-span" style="border-collapse: collapse; ">exFAT<span class="Apple-style-span" style="border-collapse: separate; ">)出來嗎?</span></span></div>

charleswu

<P><FONT style="BACKGROUND-COLOR: #e1e4e5">感謝core兄提醒</FONT></P>
<P><FONT style="BACKGROUND-COLOR: #e1e4e5"></FONT>&nbsp;</P>
<P><FONT style="BACKGROUND-COLOR: #e1e4e5">或許應該稱為<SPAN id=CFast class=mw-headline>CFast 卡比較正確，是新一代的規格，與舊有的CF卡並不相容</SPAN></FONT></P>

core

<span class="Apple-style-span" style="border-collapse: collapse; ">星星王子</span><div><span class="Apple-style-span" style="border-collapse: collapse; "><br></span></div><div><span class="Apple-style-span" style="border-collapse: collapse;">請問新的CF卡規格</span></div><div><span class="Apple-style-span" style="border-collapse: collapse;"><br></span></div><div><span class="Apple-style-span" style="border-collapse: collapse;">單檔max 多少G Bytes</span></div>

charleswu

<P>剛剛簡單的搜尋了一下 </P>
<P>網路上並沒有提到單檔max 多少G Bytes的限制問題 </P>
<P>看來這個部分還在work當中，廠商們故意沒有公布 </P>
<P>不過我認為應該會有解決方案，因為系統商都會推出自己的規格，除了民生機種外很少能通用</P>

citidisk

其實CF與CFast的分別很簡單<br>1. CF卡就像PATA(IDE)的硬碟<br>2.CFast就像SATA的硬碟<br>差別最大的讀寫速度<br><br>至於4gb的檔案大小是fat32的格式問題,與pata, sata介面無關.<br>如果要能跨平台(PC與MAC)就只有用FAT32.<br><br>