IJģʽɸռϰ
2009-10-26 10:18йֻԭ
2009928һסӵ9Ƶ߱ͬĿǰڵĸƵѸӵ13ףȫʡкشеûԿ10ϵĸĿźĿǰȫû10ˣзָĿǰĸۻIJģʽΪԼء
ĿǰѾռйȴһڹϵͳߵ¢ԼԸװǽ豸ĽֹϵͳȱչĶ
߲ʿͨڹ㶫ûѶĿĽ̶ܳȺͺʿĽҲʶĿûҪԣ˲˼ӿʡ̨ƳĿԴĶĿԴˣع粿ȴŸIJֵӵȡв۵˼·
Ŀǰȫأеļ۸ߴ1500-2500Ԫ/̨Դͳ400-800Ԫļ۸и߳
ΪԭҪǹܾҪԸε10ĿúͱһշѣδгרҵƵշѣҲ˵ͬĿѣĿǰȡãҲƵȡƵշѣ˵طԻпԽӪ̼ȲطѣҲûӷѣǾֻˡ
ĿǰȫϵͳֵӻҪƵĽѹڸؼܱIJͳһҪΪֹͨйΪ֮ڻбǰ˼ܼһ²ֵܽźţ˸еĻоͲܱ֤Բ뱾ǵû
еҪӲӲƵͷֵоƬ顢ԴңǵȣϵһλΪеijڲʿеӲûκμ¶ƵͷͽоƬIJɹɱ50Ԫ£ijɱ10-30ԪӲɱҲǼʮԪ顣˵õרҵһҵ֤ʵ
ϵͳǧ𣬲2001ꡰշѡijЩġƶͨɱÿ0.60Ԫijɱ㶫гɱ700Ԫijýһ̨еijɱԼ450Ԫ
еijɱлɱҪǽֺܲͽĶơijɱǷҪûֵ̯ȶΪҪǣΪİθ¢ϲijɱıҲиܵɡ
з棬MPEG2MPEG4H.2641280*720ĿΪij200-400MhzĽоƬҲֻҪʮԪ1920x1080ѶļоƬҲֻҪ100-200Ԫ˸еĸ߳ɱ˵ǿЦġ
ҲйΪڸƵһƵҪռֵͨƵĴƵһЩط粿ṩ60ûֻ15-40Ԫÿ£ؼ۸ȣ20-30ԪӷѺͿտĽĿͨҪṩ60ϵշѽĿͻ㲥ĿԼҵ˿ͨĿƵͻռñշƵԴշƵ롣Ȼڵĺܶ˱H.264ѹʽҲƵĵѹЩѸ塱ռԼԭΪշƵԴʹõطѸ岢ðֱ£ڹƹʧ
ΪطⱨߵĻвɹ۸Ӧѹ֮ͳһбȡĿǰָع¢ϲɹٸ۸ûĻơֻͳһбøеۺѹʹеļ۸һͳһʵֵľýȹܲɳ־ĵӻҵһӳɱӼʮ100ԪͿԽ⡣
ʵϣڸʽޣоƬṩṩоƬͨͿԽ뼸ʮָʽĿǰֺܶࡰһøźŽ롣ڷϱĵطֻҪû忨бտֵӡûͿԽʡʸеķáҺĿǰڵĵӻ+ûģʽȣֵһֱӽաָĵӽĿźţʵ֡ȫֻӰ˸źڴ䡢תеʧΣ۸ۣʹҲ㡣ûֻͨһ̨ңտĿǰֵһáСһķʽߵӪ̵ġĿΪСһԴġܿΪ˫һûտǰͨĸƵĵӽĿ
ǣûǹֵһͿȥߵӰ뿨֮뼴տôԭǺܶطĹ粿ţΪȡû1500-3500ĻзãȡۣûӵһûȻ빺С
ĿǰѾռйȴһڹϵͳߵ¢ԼԸװǽ豸ĽֹϵͳȱչĶ
߲ʿͨڹ㶫ûѶĿĽ̶ܳȺͺʿĽҲʶĿûҪԣ˲˼ӿʡ̨ƳĿԴĶĿԴˣع粿ȴŸIJֵӵȡв۵˼·
Ŀǰȫأеļ۸ߴ1500-2500Ԫ/̨Դͳ400-800Ԫļ۸и߳
ΪԭҪǹܾҪԸε10ĿúͱһշѣδгרҵƵշѣҲ˵ͬĿѣĿǰȡãҲƵȡƵշѣ˵طԻпԽӪ̼ȲطѣҲûӷѣǾֻˡ
ĿǰȫϵͳֵӻҪƵĽѹڸؼܱIJͳһҪΪֹͨйΪ֮ڻбǰ˼ܼһ²ֵܽźţ˸еĻоͲܱ֤Բ뱾ǵû
еҪӲӲƵͷֵоƬ顢ԴңǵȣϵһλΪеijڲʿеӲûκμ¶ƵͷͽоƬIJɹɱ50Ԫ£ijɱ10-30ԪӲɱҲǼʮԪ顣˵õרҵһҵ֤ʵ
ϵͳǧ𣬲2001ꡰշѡijЩġƶͨɱÿ0.60Ԫijɱ㶫гɱ700Ԫijýһ̨еijɱԼ450Ԫ
еijɱлɱҪǽֺܲͽĶơijɱǷҪûֵ̯ȶΪҪǣΪİθ¢ϲijɱıҲиܵɡ
з棬MPEG2MPEG4H.2641280*720ĿΪij200-400MhzĽоƬҲֻҪʮԪ1920x1080ѶļоƬҲֻҪ100-200Ԫ˸еĸ߳ɱ˵ǿЦġ
ҲйΪڸƵһƵҪռֵͨƵĴƵһЩط粿ṩ60ûֻ15-40Ԫÿ£ؼ۸ȣ20-30ԪӷѺͿտĽĿͨҪṩ60ϵշѽĿͻ㲥ĿԼҵ˿ͨĿƵͻռñշƵԴշƵ롣Ȼڵĺܶ˱H.264ѹʽҲƵĵѹЩѸ塱ռԼԭΪշƵԴʹõطѸ岢ðֱ£ڹƹʧ
ΪطⱨߵĻвɹ۸Ӧѹ֮ͳһбȡĿǰָع¢ϲɹٸ۸ûĻơֻͳһбøеۺѹʹеļ۸һͳһʵֵľýȹܲɳ־ĵӻҵһӳɱӼʮ100ԪͿԽ⡣
ʵϣڸʽޣоƬṩṩоƬͨͿԽ뼸ʮָʽĿǰֺܶࡰһøźŽ롣ڷϱĵطֻҪû忨бտֵӡûͿԽʡʸеķáҺĿǰڵĵӻ+ûģʽȣֵһֱӽաָĵӽĿźţʵ֡ȫֻӰ˸źڴ䡢תеʧΣ۸ۣʹҲ㡣ûֻͨһ̨ңտĿǰֵһáСһķʽߵӪ̵ġĿΪСһԴġܿΪ˫һûտǰͨĸƵĵӽĿ
ǣûǹֵһͿȥߵӰ뿨֮뼴տôԭǺܶطĹ粿ţΪȡû1500-3500ĻзãȡۣûӵһûȻ빺С
ˣֵͨӻҲİΪͥװײпܻзãDZʹϷ͵û600Ԫҳеÿ20Ԫϵӷѣĸ͵֧ÿ600ԪĻй÷ѣںܶûڼҼ̨Ҫ˶ùĻУһʹøҲתͱˣΪ°츱û600ԪС
粿Ϊ˾гٽڵӻͶʡзͿԽƽֵӽ̣Ч㲥ӷˮƽΪ˹᳹롰ȶսԷ룬ӹҵӿ췢չгӦףչһҵҪϰ棬DzȡӶߵķʽȡҵٷ١ʵϣƶͨҵķչͨ˵¢ϱӶչijЩ˿¡ҵһȫּȻûգֲƷɹзʻʹɣֿ˵һҵķչҪṩһƽƽ̨ſǽƣſĿƣſûƣƹϵͳľ¢ϣʱֵͶ;ȥһЩʤ̭Ȼ±ṋ̃ĸֻҺȥijЩ漯ŵ˽
ĵַ:http://www.cnonline.org/2009/article/11325.html