鍥犱负鎴戠敤foobar2000鏉ュ惉姝屽拰杞崲,鑰宖oobar2000杞崲鎴恗p3鏍煎紡鐨勫彧鏈塿br杩欎釜娴姩鐮佺巼鐨勯€夋嫨.浜庢槸鐗规剰鍘绘壘浜嗕笅vbr鍜宑br鐨勫尯鍒?鏍规嵁璧勬枡鏄剧ずvbr浼樹簬cbr.浜庢槸,鎴戞兂浠ュ悗鎴戞彁渚涜祫婧愬氨閮借浆鎴恦br浜?铏界劧鏄诞鍔ㄧ爜鐜囦絾鏄煶璐ㄤ笉浼氭瘮cbr鐨勫樊,鑰屼笖浣撶Н瑕佸皬!鍏跺疄涓婃涔熺粰澶у鐪嬭繃鍏夎氨鍥句簡!
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VBR锛圴ariable Bitrate锛夊姩鎬佹瘮鐗圭巼銆備篃灏辨槸娌℃湁鍥哄畾鐨勬瘮鐗圭巼锛屽帇缂╄蒋浠跺湪鍘嬬缉鏃舵牴鎹煶棰戞暟鎹嵆鏃剁‘瀹氫娇鐢ㄤ粈涔堟瘮鐗圭巼銆傝繖鏄疿ing鍙戝睍鐨勭畻娉曪紝浠栦滑灏嗕竴棣栨瓕鐨勫鏉傞儴鍒嗙敤楂楤itrate缂栫爜锛岀畝鍗曢儴鍒嗙敤浣嶣itrate缂栫爜銆備富鎰忚櫧鐒朵笉閿欙紝鍙儨Xing缂栫爜鍣ㄧ殑VBR绠楁硶寰堝樊锛岄煶璐ㄤ笌CBR鐩稿幓鐢氳繙銆傚垢杩愮殑鏄紝Lame瀹岀編鍦颁紭鍖栦簡VBR绠楁硶锛屼娇涔嬫垚涓篗P3鐨勬渶浣崇紪鐮佹ā寮忋€傝繖鏄互璐ㄩ噺涓哄墠鎻愬吋椤炬枃浠跺ぇ灏忕殑鏂瑰紡锛屾帹鑽愮紪鐮佹ā寮忋€?/p>
ABR锛圓verage Bitrate锛夊钩鍧囨瘮鐗圭巼锛屾槸VBR鐨勪竴绉嶆彃鍊煎弬鏁般€侺ame閽堝CBR涓嶄匠鐨勬枃浠朵綋绉瘮鍜孷BR鐢熸垚鏂囦欢澶у皬涓嶅畾鐨勭壒鐐圭嫭鍒涗簡杩欑缂栫爜妯″紡銆侫BR涔熻绉颁负鈥淪afe VBR鈥濓紝瀹冩槸鍦ㄦ寚瀹氱殑骞冲潎Bitrate鍐咃紝浠ユ瘡50甯э紙30甯х害1绉掞級涓轰竴娈碉紝浣庨鍜屼笉鏁忔劅棰戠巼浣跨敤鐩稿浣庣殑娴侀噺锛岄珮棰戝拰澶у姩鎬佽〃鐜版椂浣跨敤楂樻祦閲忋€備妇渚嬫潵璇达紝褰撴寚瀹氱敤192kbps ABR瀵逛竴娈祑av鏂囦欢杩涜缂栫爜鏃讹紝Lame浼氬皢璇ユ枃浠剁殑85%鐢?92kbps鍥哄畾缂栫爜锛岀劧鍚庡鍓╀綑15%杩涜鍔ㄦ€佷紭鍖栵細澶嶆潅閮ㄥ垎鐢ㄩ珮浜?92kbps鏉ョ紪鐮併€佺畝鍗曢儴鍒嗙敤浣庝簬192kbps鏉ョ紪鐮併€備笌192kbps CBR鐩告瘮锛?92kbps ABR鍦ㄦ枃浠跺ぇ灏忎笂鐩稿樊涓嶅锛岄煶璐ㄥ嵈鎻愰珮涓嶅皯銆侫BR缂栫爜鍦ㄩ€熷害涓婃槸VBR缂栫爜鐨?鍒?鍊嶏紝鍦?28-256kbps鑼冨洿鍐呰川閲忚濂戒簬CBR銆傚彲浠ュ仛涓篤BR鍜孋BR鐨勪竴绉嶆姌琛烽€夋嫨銆?/p>
CBR锛圕onstant Bitrate锛夛紝甯告暟姣旂壒鐜囷紝鎸囨枃浠朵粠澶村埌灏鹃兘鏄竴绉嶄綅閫熺巼銆傜浉瀵逛簬VBR鍜孉BR鏉ヨ锛屽畠鍘嬬缉鍑烘潵鐨勬枃浠朵綋绉緢澶э紝浣嗛煶璐ㄥ嵈涓嶄細鏈夋槑鏄剧殑鎻愰珮銆?br />
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VBR灏辨槸鍙彉姣旂壒鐜囷紝瀹冧笌鎭掑畾姣旂壒鐜嘋BR鏈変竴浜涘尯鍒紝鍏充簬CBR鎴朧BR缂栫爜鐨勫尯鍒涓嬶細
閫氳繃浣跨敤Windows Media缂栫爜鍣紝鍙互鐢ㄦ亽瀹氭瘮鐗圭巼(CBR)鎴栧彲鍙樻瘮鐗圭巼(VBR)瀵归煶棰戝拰瑙嗛鍐呭杩涜缂栫爜銆?/p>
CBR缂栫爜
鍦ㄦ祦寮忔挱鏀炬柟妗堜腑浣跨敤CBR缂栫爜鏈€涓烘湁鏁堛€備娇鐢–BR缂栫爜鏃讹紝姣旂壒鐜囧湪娴佺殑杩涜杩囩▼涓熀鏈繚鎸佹亽瀹氬苟涓旀帴杩戠洰鏍囨瘮鐗圭巼锛屽缁堝浜庣敱缂撳啿鍖哄ぇ灏忕‘瀹氱殑鏃堕棿绐楀唴銆侰BR缂栫爜鐨勭己鐐瑰湪浜庣紪鐮佸唴瀹圭殑璐ㄩ噺涓嶇ǔ瀹氥€傚洜涓哄唴瀹圭殑鏌愪簺鐗囨瑕佹瘮鍏朵粬鐗囨鏇撮毦鍘嬬缉锛屾墍浠BR娴佺殑鏌愪簺閮ㄥ垎璐ㄩ噺灏辨瘮鍏朵粬閮ㄥ垎宸€傛澶栵紝CBR缂栫爜浼氬鑷寸浉閭绘祦鐨勮川閲忎笉鍚屻€傞€氬父鍦ㄨ緝浣庢瘮鐗圭巼涓嬶紝璐ㄩ噺鐨勫彉鍖栦細鏇村姞鏄庢樉銆?/p>
VBR缂栫爜
褰撹鍒掓彁渚涘唴瀹逛緵鐢ㄦ埛涓嬭浇銆佸皢鍐呭鍦ㄦ湰鍦版挱鏀炬垨鑰呭湪璇诲彇閫熷害鏈夐檺鐨勮澶囷紙濡侰D鎴朌VD鎾斁鏈猴級涓婃挱鏀炬椂锛岃浣跨敤VBR缂栫爜銆傦紙璁″垝娴佸紡鎾斁鍐呭鏃朵篃鍙互閲囩敤宄板€糣BR缂栫爜妯″紡锛夊綋缂栫爜鍐呭涓贩鏈夌畝鍗曟暟鎹拰澶嶆潅鏁版嵁锛堜緥濡傦紝鍦ㄥ揩鍔ㄤ綔鍜屾參鍔ㄤ綔闂村垏鎹㈢殑瑙嗛锛夋椂锛孷BR 缂栫爜鏄緢鏈変紭鍔跨殑銆備娇鐢╒BR缂栫爜鏃讹紝绯荤粺灏嗚嚜鍔ㄤ负鍐呭鐨勭畝鍗曢儴鍒嗗垎閰嶈緝灏戠殑姣旂壒锛屼粠鑰岀暀鍑鸿冻閲忕殑姣旂壒鐢ㄤ簬鐢熸垚楂樿川閲忕殑澶嶆潅閮ㄥ垎銆傝繖鎰忓懗鐫€澶嶆潅鎬ф亽瀹氱殑鍐呭锛堜緥濡傛柊闂绘挱闊筹級涓嶄細鍙楃泭浜嶸BR缂栫爜銆傚娣峰悎鍐呭浣跨敤 VBR 缂栫爜鏃讹紝鍦ㄦ枃浠跺ぇ灏忕浉鍚岀殑鏉′欢涓嬶紝VBR缂栫爜鐨勮緭鍑虹粨鏋滆姣擟BR缂栫爜鐨勮緭鍑虹粨鏋滆川閲忓ソ寰楀銆傚湪鏌愪簺鎯呭喌涓嬶紝涓嶤BR缂栫爜鏂囦欢璐ㄩ噺鐩稿悓鐨刅BR缂栫爜鏂囦欢锛屽叾澶у皬鍙兘鍙湁鍓嶈€呯殑涓€鍗娿€?br />
===========
涓嶈繃vbr缂栫爜鐨勬瓕鏇插彲鑳借窡姝岃瘝绉€鐨勫姣旀湁鐐归棶棰?.杩欎篃鏄湪缃戜笂鎼滃埌鐨?.
鍙弬鑰冧笅闈?
MP3鏂囦欢鏈?涓被鍨嬶細CBR, ABR浠ュ強VBR銆?
CBR鏄痗onstant bitrate鐨勭缉鍐欙紝涓枃鎰忔€濇槸鍥哄畾姣旂壒鐜囥€?br /> 瀵逛簬姣旂壒鐜囦负128 kbps鐨凜BR MP3姝屾洸鏉ヨ锛屾瓕鏇茬殑鍓?28kb鎻忚堪鐨勬槸绗竴绉掔殑澹伴煶锛岀浜屼釜128 Kb鎻忚堪鐨勬槸绗簩绉掔殑澹伴煶鈥︹€?br /> 濡傛灉杩欓姝屽敱瀹岃640绉掗挓锛岄偅涔堣繖棣栨瓕鐨勫ぇ灏忓氨鏄?28kb 脳 640 锛?80Mb 锛?10MB銆?br /> 鎵€璋?28kbps灏辨槸128kb姣忕鐨勬剰鎬濄€?
VBR鏄痸ariable bitrate鐨勭缉鍐欙紝涓枃鎰忔€濇槸鍙彉姣旂壒鐜囥€?br /> 鍦ㄦ瓕鏇茬殑寮€濮嬶紝涓€涓汉鐙敱锛屽0闊虫瘮杈冪畝鍗曪紝鎴戜滑灏辩敤64kb鏉ユ弿杩颁竴绉掔鍐呯殑澹伴煶锛?br /> 鍦ㄦ瓕鏇茬殑楂樻疆锛屽ぇ瀹跺悎鍞憋紝澹伴煶姣旇緝澶嶆潅锛屾垜浠氨鐢?56kb鏉ユ弿杩颁竴绉掔鍐呯殑澹伴煶銆?br /> VBR鐨勯棶棰樻槸锛屾嬁鍒颁竴涓?0MB鍗?0Mb鐨刅BR MP3姝屾洸锛屾垜浠棤娉曞垽鏂瓕鏇茬殑鎸佺画鏃堕棿锛堝洜涓烘垜浠笉鐭ラ亾鏈夊闀挎椂闂存槸鍦ㄧ嫭鍞憋紝鏈夊闀挎椂闂存槸鍦ㄩ珮娼級銆?br /> 灏嗘瓕璇嶄笌MP3鍏宠仈鐨勬椂鍊欙紝涓€涓緢閲嶈鐨勫湴鏂规槸姣忎竴鍙ユ瓕璇嶅嚭鐜扮殑鏃堕棿鐐广€傚鏋滀笉鐭ラ亾姝屾洸鐨勬寔缁椂闂达紝浣犲氨涓嶇煡閬撴渶鍚庝竴鍙ユ瓕璇嶅墠闈㈠簲璇ユ敞鏄庝粈涔堟椂闂达紒
鐢变簬涓嶈兘鏍规嵁鏂囦欢澶у皬鎺ㄦ柇VBR鐨勬挱鏀炬椂闂达紝鑰屾椂闂村浜庢瓕璇嶆槸涓€涓緢閲嶈鐨勪笉鍙己灏戠殑鍥犵礌锛屾墍浠ヤ笉鑳芥妸姝岃瘝璺烳P3鏂囦欢鍏宠仈銆?
浜嬪疄涓婏紝鏃㈢劧VBR MP3鏂囦欢鑳藉瑙g爜锛堟挱鏀撅級锛岃嚜鐒朵篃鑳藉璁$畻鍑烘寔缁椂闂达紝鍙笉杩囧疄鐜拌捣鏉ュ鏉備竴鐐圭舰浜嗭紙澶т笉浜嗘帎鐫€绉掕〃浜哄伐娴嬩竴涓嬶紝 鍛靛懙锛夈€?/p>
>>鐩稿叧鏃ュ織
- 2010/02/02 -- (6)
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