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18th March 2007 14:08 #1
Encoding íà âèäåî ôàéëîâå, êàê çà îïòèìàëåí ðàçìåð/êà÷åñòâî ?
Ñâàëÿì êëèïîâåòå îò àíàëîãîâà âèäåîêàìåðà íà õàðääèñêà ïðåç TV Tuner-a, ïîëó÷àâàì RAW RGB ôàéëîâå ñ ðàçìåð îêîëî 60ÃÁ çà 45 ìèíóòè 640x480@25fps... Ñ VirtualDUB ïðàâÿ îáðàáîòêà, ñëàãàì "deinterleace" ôèëòúð, ïîñëå ïðåç DivX èëè XviD ãè êîäèðàì, íî ïàê å íåçàäîâîëèòåëíî - 600ÌÁ 45 ìèíóòåí ôàéë. Êàê ìîãà äà ãè îáðàáîòâàì åôåêòèâíî, çà äà ñå ïîëó÷àò ïî-ìàëêè ôàéëîâå ñ äîáðî êà÷åñòâî, òîâà êîëêî âðåìå ùå ÷àêàì íå ìå êàñàå. Êàêâè êîäåöè ìè òðÿáâàò? Ñ êîé ñîôòóåð ùå ñòàíå íàé-äîáðå?
Asus P8Z77-V LX/i7-3770K @ 4,3GHz/be! quiet Dark Rock Pro/MSI GTX680 TwinFrozr OC 2GB/4x8GB Kingston @ 2133MHz - 10-11-13-30/HP P400 + 5x SAS 450GB@RAID5/Corsair TX750M/Fractal Design Define R5/XMOS DAC PCM56->12SN7/807 tube amp->Infinity Renaissance 80
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18th March 2007 15:50 #2
Èçïîëçâàé êàëêóëàòîðúò íà ñúîòâåòíèÿ êîäåê.13ìá â ñåê å åäíà äîáðà êîìïðåñèÿ çà òàçè ðåçîëþöèÿ,êîå íå òè õàðåñâà?
Íå îòãîâàðÿì íà íåãðàìîòíè ïîñòîâå. Äà èçòèêàìå HWBG ïàïëà÷òà! Êîïèðàéòå ãî â ïîäïèñà ñè, çà äà ñè âúðíåì ôîðóìà.
Èìàì ñè áëîã è ñè ëàÿ â íåãî
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18th March 2007 16:03 #3
15 ìèí âèäåî îò îõðàíèòåëíà êàìåðà ïðè 640x480 @ 30 fps, öâåòíî, MS MPEG4v2 êîäåê ïðè 512 kbps - 60 MB. Ïðè òîâà êà÷åñòâîòî å íàïúëíî çàâîäîëèòåëíî.
Internet - it doesn't make you stupid, it just makes your stupidity more accessible to others
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18th March 2007 17:19 #4
Âèñîêî êà÷åñòâî è íåãîëÿì ðàçìåð íà ôàéëîâåòå ñ XviD, DivX è H.264 ñå ïîñòèãà ïðè 0.256 áèòà/ïèêñåë. Çà äà ñè ñìåòíåø áèòðåéòà: x*y*fps*(bits/pixel) ðàçäåëåíî íà 1024 è ñå ïîëó÷àâà â êèëîáèòè çà ñåêóíäà (òî÷íî êîåòî òè òðÿáâà). Íàïðèìåð (640*480*29.97*0.256) / 1024 = 2301.696 kbit/sec. Äåìåê, ïèøåø 2302, òàì êúäåòî ñå ïîñî÷âà áèòðåéòà.
Àêî ðàçìåðà òè ñå ñòðóâà ãîëÿì, èçïîëçâàé ïî-íèñêà ñòîéíîñò çà bits/pixel, íî íå ïàäàé ïîä 0.128.The harder I work, the luckier I goddamned get.
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18th March 2007 18:09 #5Registered User
Join Date: Aug:2006
Location: Ïëîâäèâ
Posts: 4,052
http://www.videolan.org/developers/x264.html
Ïðåäïîëàãàì, ÷å äîðè è ïîñëåäíàòà âåðñèÿ íà VLC ùå ìîæå äà ïðåêîäèðà â òîçè ôîðìàò.




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