'H.264'에 해당되는 글 3건

  1. 2010.04.15 x264 와 h264의 관계?
  2. 2010.02.26 유튜브 파일 다운로드 하기(download youtube as file) (6)
  3. 2010.01.19 H.26x MPEG2, MPEG4 (6)
프로그램 사용/VLC2010.04.15 22:47
x264 is a free library for encoding H264/AVC video streams.

중요한건 videolan.org 의 x264 개발자 페이지의 첫 줄에 나와있다.
library for encoding
H.264는 Encoding / Decoding 으로 보이고.
X.264는 opensource GPL Encoding으로 보인다.
간단하게 H.264의 반쪽 버전이라고 해야하려나?

H.264는
MPEG-4 part 10
AVC(Advanced Video Codec)

H.263은(3gpp / 영상통화)
MPEG-2
MPEG-4 Part 2

[링크 : http://www.videolan.org/developers/x264.html]
[링크 : http://en.wikipedia.org/wiki/X264]
[링크 : http://ko.wikipedia.org/wiki/X264]

[링크 : http://ko.wikipedia.org/wiki/H.264]
[링크 : http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC]

http://en.wikipedia.org/wiki/H.263

신고
Posted by 구차니
TAG H.263, H.264, x.264

댓글을 달아 주세요

아래는 wireshark로 tcp 에서 긁어 본건데, 간단하게 URL을 빼내기는 힘들다라는 내용
[링크 : http://blog.scouta.com/2007/10/20/youtubes-h264-file-url/]

아래는 &t 에 &fmt 값으로 원하는 포맷으로 변경후 받는 내용
[링크 : http://blog.jimmyr.com/High_Quality_on_Youtube_11_2008.php]


하.지.만 될리가 없잖아 ㄱ-
아무튼 혼자서 또 삽질을 하면서 알아낸 것은


http://www.youtube.com/watch?v=TMZNXW7cFCs
이 녀석을 샘플로 말하자면

이 html 페이지를 열어 보면 다음과 같은 내용이 있다.
yt.setConfig({
            'VIDEO_ID': 'TMZNXW7cFCs',
            'VIDEO_TITLE': '게임테크 2010 시연 동영상  1',

            'SWF_URL': (yt.flash.canPlayV9Swf() ? (!yt.flash.canPlayH264Videos() ? "http://s.ytimg.com/yt/swf/watch-vfl148687.swf" : "http://s.ytimg.com/yt/swf/watch_as3-vfl148857.swf") : "http://s.ytimg.com/yt/swf/watch_v8-vfl148687.swf"),
            'SWF_ARGS': {"rv.2.thumbnailUrl": "http%3A%2F%2Fi3.ytimg.com%2Fvi%2FfmPjDH1sDfo%2Fdefault.jpg", "rv.7.length_seconds": "600", "rv.0.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DPOcCzju_kqk", "rv.0.view_count": "7243", "enablecsi": "1", "rv.2.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+8%2F14", "rv.7.thumbnailUrl": "http%3A%2F%2Fi3.ytimg.com%2Fvi%2F2rEfw1DEtts%2Fdefault.jpg", "rv.4.rating": "5.0", "length_seconds": "78", "rv.0.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+14%2F14", "rv.7.author": "junjangsoh", "rv.7.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+10%2F14", "rv.3.view_count": "6324", "allow_embed": "1", "rv.5.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+5%2F14", "rv.0.length_seconds": "564", "rv.4.thumbnailUrl": "http%3A%2F%2Fi3.ytimg.com%2Fvi%2FnHQokcqw2uw%2Fdefault.jpg", "fmt_url_map": "22%7Chttp%3A%2F%2Fv20.lscache7.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Cratebypass%26fexp%3D900023%252C901802%26itag%3D22%26ipbits%3D0%26sver%3D3%26ratebypass%3Dyes%26expire%3D1267196400%26key%3Dyt1%26signature%3D0F25C849B5E0697E2708D7FDF90873CA778C1814.33DA1EEAD4CC9692C5613494A2C564133BF81595%26id%3D4cc64d5d6edc142b%2C35%7Chttp%3A%2F%2Fv21.lscache2.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D35%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D241955F71A0A876EC7B6DB78E3E792F66F3F21AD.309C4F50111292184108BB359CEEF7A9A86B918F%26factor%3D1.25%26id%3D4cc64d5d6edc142b%2C34%7Chttp%3A%2F%2Fv2.lscache8.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D34%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D6AE4B5BA71E0F02396287FFDA1DF821A6158B6AF.CB0891E42ADAB8317ECA61A64CF77DD79BE662AC%26factor%3D1.25%26id%3D4cc64d5d6edc142b%2C5%7Chttp%3A%2F%2Fv7.lscache3.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D5%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D5AD304AB9BCC13F8BD46205F6F5FD95EF491C5EB.AB6CB2D6EEAE16BAE8003D88D2628D4008065739%26factor%3D1.25%26id%3D4cc64d5d6edc142b", "rv.2.rating": "5.0", "csi_page_type": "watch", "keywords": "14", "cr": "KR", "rv.1.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DLUs4UPyE2AI", "rv.6.thumbnailUrl": "http%3A%2F%2Fi4.ytimg.com%2Fvi%2FCjn_lrc2b_k%2Fdefault.jpg", "rv.1.id": "LUs4UPyE2AI", "rv.3.rating": "5.0", "rv.6.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+13%2F14", "fmt_list": "22%2F2000000%2F9%2F0%2F115%2C35%2F640000%2F9%2F0%2F115%2C34%2F0%2F9%2F0%2F115%2C5%2F0%2F7%2F0%2F0", "rv.7.id": "2rEfw1DEtts", "rv.1.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+1%2F14", "rv.1.thumbnailUrl": "http%3A%2F%2Fi1.ytimg.com%2Fvi%2FLUs4UPyE2AI%2Fdefault.jpg", "rv.6.length_seconds": "602", "rv.0.rating": "5.0", "watermark": "http%3A%2F%2Fs.ytimg.com%2Fyt%2Fswf%2Flogo-vfl106645.swf%2Chttp%3A%2F%2Fs.ytimg.com%2Fyt%2Fswf%2Fhdlogo-vfl100714.swf", "rv.6.author": "junjangsoh", "rv.5.id": "gfsJ3Eq_Zhs", "rv.4.author": "junjangsoh", "plid": "AASAfHyi-5gDThaQ", "rv.0.id": "POcCzju_kqk", "rv.3.length_seconds": "598", "rv.5.rating": "5.0", "rv.4.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DnHQokcqw2uw", "sdetail": "p%3A%2Fvideos", "fexp": "900023%2C901802", "rv.1.author": "junjangsoh", "rv.1.rating": "5.0", "rv.4.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+3%2F14", "rv.5.thumbnailUrl": "http%3A%2F%2Fi4.ytimg.com%2Fvi%2FgfsJ3Eq_Zhs%2Fdefault.jpg", "rv.5.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DgfsJ3Eq_Zhs", "rv.3.title": "%EC%97%94%EB%93%9C%EA%B2%8C%EC%9E%84+-+%EC%A7%80%EA%B5%AC+%EB%85%B8%EC%98%88%ED%99%94+%EC%B2%AD%EC%82%AC%EC%A7%84+4%2F14", "sourceid": "y", "rv.0.author": "junjangsoh", "rv.3.thumbnailUrl": "http%3A%2F%2Fi2.ytimg.com%2Fvi%2Fi27PAb-w0AY%2Fdefault.jpg", "rv.2.author": "junjangsoh", "rv.6.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DCjn_lrc2b_k", "rv.7.rating": "5.0", "rv.3.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Di27PAb-w0AY", "fmt_map": "22%2F2000000%2F9%2F0%2F115%2C35%2F640000%2F9%2F0%2F115%2C34%2F0%2F9%2F0%2F115%2C5%2F0%2F7%2F0%2F0", "hl": "en_US", "rv.7.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D2rEfw1DEtts", "rv.2.view_count": "5454", "rv.4.length_seconds": "611", "rv.4.view_count": "7731", "rv.2.url": "http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DfmPjDH1sDfo", "rv.5.length_seconds": "600", "rv.0.thumbnailUrl": "http%3A%2F%2Fi1.ytimg.com%2Fvi%2FPOcCzju_kqk%2Fdefault.jpg", "fmt_stream_map": "22%7Chttp%3A%2F%2Fv20.lscache7.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Cratebypass%26fexp%3D900023%252C901802%26itag%3D22%26ipbits%3D0%26sver%3D3%26ratebypass%3Dyes%26expire%3D1267196400%26key%3Dyt1%26signature%3D0F25C849B5E0697E2708D7FDF90873CA778C1814.33DA1EEAD4CC9692C5613494A2C564133BF81595%26id%3D4cc64d5d6edc142b%2C35%7Chttp%3A%2F%2Fv21.lscache2.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D35%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D241955F71A0A876EC7B6DB78E3E792F66F3F21AD.309C4F50111292184108BB359CEEF7A9A86B918F%26factor%3D1.25%26id%3D4cc64d5d6edc142b%2C34%7Chttp%3A%2F%2Fv2.lscache8.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D34%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D6AE4B5BA71E0F02396287FFDA1DF821A6158B6AF.CB0891E42ADAB8317ECA61A64CF77DD79BE662AC%26factor%3D1.25%26id%3D4cc64d5d6edc142b%2C5%7Chttp%3A%2F%2Fv7.lscache3.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D5%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D5AD304AB9BCC13F8BD46205F6F5FD95EF491C5EB.AB6CB2D6EEAE16BAE8003D88D2628D4008065739%26factor%3D1.25%26id%3D4cc64d5d6edc142b", "sk": "AN-IBdoG6rDwqBQ2JAmJ7AiKj79qzYtCC", "rv.1.view_count": "25631", "rv.1.length_seconds": "596", "rv.6.rating": "5.0", "rv.5.author": "junjangsoh", "vq": "medium", "rv.3.id": "i27PAb-w0AY", "rv.2.id": "fmPjDH1sDfo", "rv.2.length_seconds": "600", "rv.5.view_count": "6470", "t": "vjVQa1PpcFNMsS2pAI26JfksbOObe4nVZu_ORw-B1v4%3D", "rv.6.id": "Cjn_lrc2b_k", "video_id": "TMZNXW7cFCs", "rv.6.view_count": "5377", "rv.3.author": "junjangsoh", "rv.4.id": "nHQokcqw2uw", "rv.7.view_count": "4854"},
            'SWF_GAM_URL': null,
            'SWF_DC_URL': null,
            'SWF_EXPRESS_URL': null,
            'SWF_AD_EURL': null,
            'SWF_IS_PLAYING_ALL': false,
            'SWF_SET_WMODE': false,

            'SHOW_AUTOSHARE': true,
            'IS_WIDESCREEN': false,
            'IS_HD_AVAILABLE': true,
            'WIDE_PLAYER_STYLES':         ["watch-wide-mode"]
,
            'EMBED_URL': 'http://www.youtube.com/v/TMZNXW7cFCs&hl=en_US&fs=1',
            'VIDEO_LANGUAGE': 'EN',
            'VIDEO_USERNAME': 'say2420',
            'PLAY_NEXT_FROM': '',
            'PLAY_NEXT_COUNT': '0',
            'QL_AUTOSCROLL_DEST': 0,
            'LOCALE': 'en_US',
            'AXC': '',
            'SUBSCRIBE_AXC': '',

            'PLAYER_SAVE_QUALITY': true,

            'COMMENTS_THRESHHOLD': -5,
            'COMMENTS_FILTER': 0,
            'COMMENTS_PAGE_SIZE': 10,
            'COMMENTS_MAX_PAGE': 1,
            'COMMENTS_COUNT': 4,

            'IS_BRANDED_WATCH': false
        });

아무튼 저넘의 fmt_url_map을 들여다보자!
"22%7Chttp%3A%2F%2Fv20.lscache7.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Cratebypass%26fexp%3D900023%252C901802%26itag%3D22%26ipbits%3D0%26sver%3D3%26ratebypass%3Dyes%26expire%3D1267196400%26key%3Dyt1%26signature%3D0F25C849B5E0697E2708D7FDF90873CA778C1814.33DA1EEAD4CC9692C5613494A2C564133BF81595%26id%3D4cc64d5d6edc142b%2C35%7Chttp%3A%2F%2Fv21.lscache2.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D35%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D241955F71A0A876EC7B6DB78E3E792F66F3F21AD.309C4F50111292184108BB359CEEF7A9A86B918F%26factor%3D1.25%26id%3D4cc64d5d6edc142b%2C34%7Chttp%3A%2F%2Fv2.lscache8.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D34%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D6AE4B5BA71E0F02396287FFDA1DF821A6158B6AF.CB0891E42ADAB8317ECA61A64CF77DD79BE662AC%26factor%3D1.25%26id%3D4cc64d5d6edc142b%2C5%7Chttp%3A%2F%2Fv7.lscache3.c.youtube.com%2Fvideoplayback%3Fip%3D0.0.0.0%26sparams%3Did%252Cexpire%252Cip%252Cipbits%252Citag%252Calgorithm%252Cburst%252Cfactor%26fexp%3D900023%252C901802%26algorithm%3Dthrottle-factor%26itag%3D5%26ipbits%3D0%26burst%3D40%26sver%3D3%26expire%3D1267196400%26key%3Dyt1%26signature%3D5AD304AB9BCC13F8BD46205F6F5FD95EF491C5EB.AB6CB2D6EEAE16BAE8003D88D2628D4008065739%26factor%3D1.25%26id%3D4cc64d5d6edc142b"

무언의 규칙성이 느껴지지 않는가!?
그렇다면 치환을 고고싱~

%7C 는 |
%3A 는 :
%2F 는 /
%3F 는 ?
%26 는 &
%25 는 %
%2C 는 ,
%3D 는 =

이므로 치환을 하면

"22|http://v20.lscache7.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Cratebypass&fexp=900023%2C901802&itag=22&ipbits=0&sver=3&ratebypass=yes&expire=1267196400&key=yt1&signature=0F25C849B5E0697E2708D7FDF90873CA778C1814.33DA1EEAD4CC9692C5613494A2C564133BF81595&id=4cc64d5d6edc142b

,35|http://v21.lscache2.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor&fexp=900023%2C901802&algorithm=throttle-factor&itag=35&ipbits=0&burst=40&sver=3&expire=1267196400&key=yt1&signature=241955F71A0A876EC7B6DB78E3E792F66F3F21AD.309C4F50111292184108BB359CEEF7A9A86B918F&factor=1.25&id=4cc64d5d6edc142b

,34|http://v2.lscache8.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor&fexp=900023%2C901802&algorithm=throttle-factor&itag=34&ipbits=0&burst=40&sver=3&expire=1267196400&key=yt1&signature=6AE4B5BA71E0F02396287FFDA1DF821A6158B6AF.CB0891E42ADAB8317ECA61A64CF77DD79BE662AC&factor=1.25&id=4cc64d5d6edc142b

,5|http://v7.lscache3.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor&fexp=900023%2C901802&algorithm=throttle-factor&itag=5&ipbits=0&burst=40&sver=3&expire=1267196400&key=yt1&signature=5AD304AB9BCC13F8BD46205F6F5FD95EF491C5EB.AB6CB2D6EEAE16BAE8003D88D2628D4008065739&factor=1.25&id=4cc64d5d6edc142b"

의 내용이 나오게 된다.
아무튼 http:// 부터 클릭하면 다운로드를 하게 된다.
22>18 순으로 H.264를 지원하는 해상도 이므로 적절하게 다운로드!



2010/01/26 - [프로그램 사용/VLC] - VLC로 youtube 동영상 감상하기

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Posted by 구차니

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  1. 오호라....ㅋㅋㅋ 재밌네요... ㅋㅋㅋ

    2010.02.27 11:09 신고 [ ADDR : EDIT/ DEL : REPLY ]
  2. 후럴! 뭐가 이리 복잡한가요?@.@
    (때려쳐!때려쳐!)

    2010.03.06 19:10 신고 [ ADDR : EDIT/ DEL : REPLY ]
  3. 좋은 내용 감사합니당. 덕분에 java 코드를 고칠 수 있었어요 ㅎ

    2014.08.18 13:30 신고 [ ADDR : EDIT/ DEL : REPLY ]
    • 오래전 글인데 여전히 동일한 방법으로 내용을 넣어두고 있나보네요 ^^
      그리고 이런건.. 댓글로 다시는 것도 좋지만 트랙백으로 해당 링크를 거는 것도 방법입니다 ^^

      좋은하루 되세요~!

      2014.08.18 14:00 신고 [ ADDR : EDIT/ DEL ]

회사일2010.01.19 11:01
MPEG-1's known weaknesses:
    * an audio compression system limited to two channels (stereo.)
    * no standardized support for interlaced video with poor compression when used for interlaced video
    * only one standardized "profile" (Constrained Parameters Bitstream) which was unsuited for higher resolution video. MPEG-1 could support 4k video but there was no easy way to encode video for higher resolutions, and identify hardware capable of supporting it, as the limitations of such hardware were not defined.
    * Support for only one color space, 4:2:0.

[링크 : http://en.wikipedia.org/wiki/Mpeg2]



MPEG-2 part 1 ~ 11
Part  1 H.222.0
Part  2 H.262
Part  3 MPEG-2 BC - backwards compatible with MPEG-1 Audio
Part  4 - conformance testing
Part  5 - software simulation
Part  6 DSM-CC (Digital Storage Media Command and Control)
Part  7 MPEG-2 NBC (Audio - Non-Backwards Compatible with MPEG-1 Audio) / AAC
Part  8 - drop
Part  9
Part 10 DSM-CC
Part 11 IPMP (Intellectual Property Management and Protection)

Audio encoding
 MPEG-2 also introduces new audio encoding methods. These are:[12]
 MPEG-2 BC (backward compatible with MPEG-1 audio formats)[6][5][9]
     * low bitrate encoding with halved sampling rate (MPEG-1 Layer 1/2/3 LSF)
     * multichannel encoding with up to 5.1 channels
 MPEG-2 NBC (Non-Backward Compatible)[6][5]
     * MPEG-2 AAC
     * multichannel encoding with up to 48 channels

[링크 : http://en.wikipedia.org/wiki/Mpeg2]


MPEG-4 part 1 ~ 27
Part  1 System
Part  2 Visual
Part  3 Audio
Part  4 Conformance testing
Part  5 Reference software
Part  6 DMIF (Delivery Multimedia Integration Framework)
Part  7
Part  8 over IP
Part  9 Reference hardware description
Part 10 AVC (H.264)
Part 11
Part 12 3gp (iso base media file format)
Part 13 IPMP
Part 14 mp4
Part 15 AVC (Advanced Video Coding)
Part 16 AFX (Animation Framework eXtension)
Part 17
Part 18
Part 19
Part 20
Part 21
Part 22
Part 23
Part 24
Part 25
Part 26
Part 27

[링크 : http://en.wikipedia.org/wiki/MPEG-4]



H.262 or MPEG-2 Part 2(known as MPEG-2 Video) is a digital video compression and encoding standard.
H.263 is a video codec standard originally designed as a low-bitrate compressed format for videoconferencing.
H.264/MPEG-4 AVC is a standard for video compression.

H.262 [링크 : http://en.wikipedia.org/wiki/MPEG-2_Part_2]
H.263 [링크 : http://en.wikipedia.org/wiki/H.263]
H.264 [링크 : http://en.wikipedia.org/wiki/H.264]
신고

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Posted by 구차니

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  1. 놀러 왔어요~
    흠...포스팅에 대해선...음...음...음...^^

    2010.01.19 11:39 신고 [ ADDR : EDIT/ DEL : REPLY ]
  2. H.323은 제가 조금 아는데..ㅎㅎ

    2010.01.19 12:03 신고 [ ADDR : EDIT/ DEL : REPLY ]
  3. H264 디코더로 CoreAVC가 좋더군요...
    응? 이게 아닌가...;;;;

    2010.01.19 14:42 신고 [ ADDR : EDIT/ DEL : REPLY ]