The transcoding technology can be divided into two types : one is to transcode the video stream from one format to another , which is called homogeneous transcoding ; the other is heterogeneous transcoding , which transcode the compressed video from one standard to another 主要分為兩大類,一類是在同一視頻編碼標(biāo)準(zhǔn)中轉(zhuǎn)換,另一類是在不同標(biāo)準(zhǔn)之間轉(zhuǎn)換。本文以數(shù)字電視轉(zhuǎn)碼為背景,主要研究了hdtv ( 1920 1080 )到sdtv ( 640 480 )的轉(zhuǎn)碼。
The transcoding of compressed bitstreams is to transcode a compressed video stream from one format or standard to another . based on heterogeneous transcoding , the transcoding between h . 263 and mpeg - 4 is researched in this paper , including the transform of bitrate and space resolution 本文以不同標(biāo)準(zhǔn)之間的視頻轉(zhuǎn)碼為背景,主要研究了h . 263與mpeg - 4兩種標(biāo)準(zhǔn)之間的視頻轉(zhuǎn)碼,包括空間分辨率轉(zhuǎn)換和碼率轉(zhuǎn)換的內(nèi)容,并在pc上實(shí)現(xiàn)了轉(zhuǎn)碼系統(tǒng)。
The transcoding technology can be divided into two types : one is to transcode the video stream from one format to another , which is called homogeneous transcoding ; the other is heterogeneous transcoding , that is transcode the compressed video from one standard to another 所謂的視頻轉(zhuǎn)碼就是將一種格式的壓縮視頻數(shù)據(jù)處理成更適應(yīng)于特定應(yīng)用的另一種格式的壓縮視頻流。主要分為兩大類,一類是在同一視頻標(biāo)準(zhǔn)中轉(zhuǎn)換,另一類是在不同標(biāo)準(zhǔn)間轉(zhuǎn)換。
In this case , you could parameterize your stylesheet to generate a smaller html document for a wml device , which transcoding technology would then transcode to wml see the article by alan booth and kathryn britton , spinning your xml for screens of all sizes , published on ibm developerworks 在這種情況下,您可以為樣式表設(shè)置參數(shù)以便為wml設(shè)備生成較小的html文檔,然后代碼轉(zhuǎn)換技術(shù)將該樣式表代碼轉(zhuǎn)換成wml (請(qǐng)參閱alan booth和kathryn britton發(fā)表在ibm developerworks上的文章
And the transcoding technology can be divided into two types : one is to transcode the video stream from one format to another , which is called homogeneous transcoding ; the other type is heterogeneous transcoding , that is to transcode the compressed video stream from one compression standard to another . aim at the homogeneous transcoding , the second chapter concentrates on the format transcoding of compressed video stream compliant to the same compression standard 主要可以分為兩大類:一類是把編碼數(shù)據(jù)流從適合某一傳輸環(huán)境的壓縮形式轉(zhuǎn)換成適合于另一傳輸環(huán)境的壓縮形式,稱為同類視頻轉(zhuǎn)碼;另一類是把壓縮數(shù)據(jù)流從某一種標(biāo)準(zhǔn)轉(zhuǎn)換成另一種標(biāo)準(zhǔn),稱為不同種類視頻轉(zhuǎn)碼。