{"id":12,"date":"2011-12-28T00:11:21","date_gmt":"2011-12-28T00:11:21","guid":{"rendered":"http:\/\/rady.707.cz\/web\/?p=12"},"modified":"2013-08-18T22:29:20","modified_gmt":"2013-08-18T21:29:20","slug":"mediacoder","status":"publish","type":"post","link":"https:\/\/www.deven.cz\/?p=12","title":{"rendered":"MediaCoder"},"content":{"rendered":"

MediaCoder p\u0159ev\u00e1d\u00ed multimedi\u00e1ln\u00ed form\u00e1ty. Nab\u00edz\u00ed opravdu \u0161irok\u00e9 rozmez\u00ed pou\u017eitelnosti pro t\u00e9m\u011b\u0159 v\u0161echny zn\u00e1m\u00e9 multimedi\u00e1ln\u00ed form\u00e1ty. P\u0159evod z form\u00e1t\u016f MP<\/p>\n

\"\u00favodn\u00ed<\/a>

\u00favodn\u00ed menu<\/p><\/div>\n

G, VOB, AVI, RMVB, MOV, MP4 do AVI, MKV, MP4 (Xvid, DivX, H.264), MP3, OGG, AAC. Konverze VCD, DVD form\u00e1t\u016f na MPEG, grabov\u00e1n\u00ed z audio CD do APE, FLAC, WAV, MP3, OGG, AAC, WMA, MPC. Paleta je opravdu \u0161irok\u00e1, mo\u017enosti nastaven\u00ed bitrate, VBR atd. jsou samoz\u0159ejmost\u00ed a program uspokoj\u00ed i nejn\u00e1ro\u010dn\u011bj\u0161\u00ed u\u017eivatele. Bohu\u017eel jak to tak b\u00fdv\u00e1 \u010d\u00edm v\u00edce m\u00e1 program funkc\u00ed t\u00edm v\u00edce hor\u0161\u00ed je v n\u011bm n\u011bco nastavit. Pokus\u00edm se v\u00e1m alespo\u0148 trochu p\u0159ibl\u00ed\u017eit ovl\u00e1d\u00e1n\u00ed tohoto dokonal\u00e9ho freewarov\u00e9ho programu. P\u0159i otev\u0159en\u00ed programu se v\u00e1m zobraz\u00ed \u00favodn\u00ed obrazovka.<\/p>\n

(Po kliknut\u00ed lze obr\u00e1zek zv\u011bt\u0161it)
\nVpravo naho\u0159e vid\u00edte vlastnosti vstupn\u00edho souboru (soubor kter\u00fd chcete p\u0159ev\u00e9st). Do programu lze vstupn\u00ed soubor snadno vlo\u017eit p\u0159et\u00e1hnut\u00edm souboru na otev\u0159en\u00e9 okno programu. Vpravo dole na z\u00e1lo\u017ece souhrn m\u00e1te vyps\u00e1ny vlastnosti<\/p>\n

v\u00fdstupn\u00edho souboru. D\u00e1le vlevo dole m\u00e1te n\u00e1hled pr\u00e1v\u011b p\u0159ev\u00e1d\u011bn\u00e9ho sn\u00edmku. Pomoc\u00ed intervalu ur\u010dujete jak \u010dasto se m\u00e1 n\u00e1hled aktualizovat a mode v\u00e1m ur\u010duje jestli m\u00e1 b\u00fdt n\u00e1hled:
\nzapl\u00fd – off
\nv nov\u00e9m okn\u011b – Outside
\nji\u017e v otev\u0159en\u00e9m okn\u011b (viz. obr\u00e1zek v\u00fd\u0161e) – Inside<\/p>\n

Tasking(Zpracov\u00e1n\u00ed \u00faloh)<\/span><\/strong><\/p>\n

\"\"<\/a><\/p>\n

Vpravo dole jak m\u00e1me n\u00e1hled je z\u00e1lo\u017eka tasking. Na t\u00e9to z\u00e1lo\u017ece bych nechal v\u0161e tak jak je. P\u0159\u00edpadn\u011b jestli bude cht\u00edt s po\u010d\u00edta\u010dem b\u011bhem konvertov\u00e1n\u00edm pracovat a m\u00e1te v\u00edce jadern\u00fd procesor tak bych neza\u0161krt\u00e1val v\u0161echny pol\u00ed\u010dka ([CORES_TO_USE]co pole to jedno j\u00e1dro.)<\/p>\n

 <\/p>\n

Video<\/span><\/strong>
\nNyn\u00ed si otev\u0159eme z\u00e1lo\u017eku Video viz obr. n\u00ed\u017ee
\n\"\"<\/a>
\nVid\u00edme:<\/p>\n

Video bitrate<\/strong>
\nCo je to Bitrate? Bitrate je datov\u00fd tok informac\u00ed za sekundu. \u010d\u00edm v\u011bt\u0161\u00ed bitrate t\u00edm se zv\u011bt\u0161\u00ed velikost v\u00fdstupn\u00edho souboru. Bitrate zna\u010dn\u011b ovliv\u0148uje velikost souboru. Pokud chcete konvertovat video do rozli\u0161en\u00ed cca 720×640(480) [SD form\u00e1t] tak doporu\u010duji datov\u00fd tok 2000Kbps pokud chcete pou\u017e\u00edt nap\u0159 kodek xvid, mpeg-4 a divx, h-246. Pokud pou\u017eijete kodek MPEG-2 tak vhodn\u00fd bitrate je min 3000Kbps. Zjednodu\u0161en\u011b \u0159e\u010deno \u010d\u00edm vy\u0161\u0161\u00ed je datov\u00fd tok t\u00edm kvalitn\u011bj\u0161\u00ed je video.<\/p>\n

Rate mode<\/strong>
\nRate bode u\u0159\u010duje jestli bude datov\u00fd tok prom\u011bnn\u00fd VBR nebo st\u00e1l\u00fd ABR
\nVBR- Datov\u00fd tok se m\u011bn\u00ed podle slo\u017eitosti sc\u00e9ny, \u010d\u00edm v\u00edce je sc\u00e9na slo\u017eit\u00e1 t\u00edm v\u011bt\u0161\u00ed je datov\u00fd tok a tud\u00ed\u017e men\u0161\u00ed kompresn\u00ed pom\u011br. Pokud je sc\u00e9na jednoduch\u00e1 (m\u00e1lo \u010dlenit\u00e1) bude men\u0161\u00ed datov\u00fd tok a v\u011bt\u0161\u00ed kompresn\u00ed pom\u011br.
\nABR- Datov\u00fd tok je konstantn\u00ed.<\/p>\n

Form\u00e1t<\/strong>
\nZde si zvol\u00edte kodek. Co je to kodek? A k \u010demu slou\u017e\u00ed kodek? Kodek je funkce kter\u00e1 dok\u00e1\u017ee zm\u011bnit stream nebo-li datov\u00fd tok.(nap\u0159.: video stream). Kodek m\u00e1 za \u00fakol ulo\u017eit data do zak\u00f3dovan\u00e9 formy. Vyu\u017eiti zak\u00f3dovan\u00e9 formy dat je nap\u0159\u00edklad ve sn\u00ed\u017een\u00ed velikosti (souboru; streamu). V prav\u00e9 \u010d\u00e1sti programu si m\u016f\u017eete podrobn\u011b nastavit funkce kodeku.Jednotliv\u00e9 kodeky podrobn\u011b pop\u00ed\u0161u a rozeberu jejich nastaven\u00ed v samostatn\u00e9m t\u00e9matu a odkazy na n\u011b sem pozd\u011bji vlo\u017e\u00edm.<\/p>\n

enkod\u00e9r<\/strong>
\nPonechte automaticky za\u0161krtnut\u00e9 pol\u00ed\u010dko (automatick\u00fd v\u00fdb\u011br).<\/p>\n

Zdroj<\/strong>
\nPonechte automaticky za\u0161krtnut\u00e9 pol\u00ed\u010dko (automatick\u00fd v\u00fdb\u011br).<\/p>\n

Audio<\/span><\/strong>
\nTe\u010f se p\u0159esuneme na z\u00e1lo\u017eku audio
\n\"\"<\/a>
\nZ obr\u00e1zku vid\u00edte, \u017ee je za\u0161krtl\u00e9 pol\u00ed\u010dko povoleno. Pokud by nebylo za\u0161krtnut\u00e9 nem\u011bli by jsme ve videu \u017e\u00e1dnou zvukovou stopu. Vedle m\u00e1te n\u00e1zev zvukov\u00e9 stopy (EN, CZ, atd…), v m\u00e9m p\u0159\u00edpade ID: 0. Zde si m\u016f\u017eete vybrat zvukovou stopu, kterou chcete p\u0159ipojit k videu. P\u0159i za\u0161krtnut\u00ed pol\u00ed\u010dka external_file v\u00e1m vysko\u010d\u00ed nab\u00eddka pro p\u0159id\u00e1n\u00ed extern\u00edho (samostatn\u00e9ho) audio souboru.<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Kontejner<\/span><\/strong>
\n\"\"<\/a>
\nPrvn\u00ed kolonka n\u00e1m d\u00e1v\u00e1 na v\u00fdb\u011br z n\u011bkolika kontejner\u016f. Co je to kontejner, video kontejner nebo taky multimedi\u00e1ln\u00ed kontejner? Mu\u017eem si to p\u0159edstavit jako n\u011bjakou krabici (obal), kter\u00fd do sebe pojme r\u016fzn\u00e9 informace. Jako nap\u0159\u00edklad video a audio soubor. Ka\u017ed\u00fd kontejner disponuje r\u016fzn\u00fdmi vlastnostmi nap\u0159. dok\u00e1\u017ee pojmout v\u00edce audio souboru [(streamu) pro lep\u0161\u00ed p\u0159edstavu se jedn\u00e1 o \u010deskou a anglickou zvukovou stopu]. Jednotliv\u00fdmi vlastnotmi kontejner\u016f se budu podrobn\u011bji zab\u00fdvat zde<\/a>.<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Obr\u00e1zek<\/span><\/strong>
\n\"\"<\/a><\/p>\n

Jedn\u00e1 se o posledn\u00ed z\u00e1lo\u017eku kter\u00e9 se budu v\u011bnovat v tomto stru\u010dn\u00e9m p\u0159ehledu. Pokud budete cht\u00edt mohu \u010dl\u00e1nek rozepsat. Nyn\u00ed bych se cht\u011bl hlavn\u011b zam\u011b\u0159it na podrobn\u00e9 pops\u00e1n\u00ed kodek\u016f kontejner\u016f a atd<\/p><\/blockquote>\n

Zm\u011bnit velikost<\/strong>
\nJak u\u017e z n\u00e1zvu napov\u00edd\u00e1 jedn\u00e1 se o zm\u011bnu velikosti rozli\u0161en\u00ed v\u00fdstupn\u00edho videa.
\nNejzn\u00e1m\u011bj\u0161\u00ed a standardizovan\u00e9 pom\u011bry obrazu jsou 16:10, 16:9, 5:3, 4:3, 3:2 a nov\u00fd 17:9.<\/p>\n

16:10<\/strong>
\nPom\u011br stran obrazu 16:10 m\u00e1 tyto rozli\u0161en\u00ed<\/p>\n

 <\/p>\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n
Jm\u00e9no
\nstandartu<\/td>\n		Rozli\u0161en\u00ed<\/td>\n<\/tr>\n
CGA<\/td>\n320\u00d7200<\/td>\n<\/tr>\n
WXGA<\/td>\n1280\u00d7800<\/span><\/td>\n<\/tr>\n
WXGA+<\/td>\n1440\u00d7900<\/td>\n<\/tr>\n
WSXGA+<\/td>\n1680\u00d71050<\/td>\n<\/tr>\n
WUXGA<\/td>\n1920\u00d71200<\/span><\/td>\n<\/tr>\n
WQXGA<\/td>\n2560\u00d71600<\/span><\/td>\n<\/tr>\n
WQUXGA<\/td>\n3840×2400<\/td>\n<\/tr>\n
WHUXGA<\/td>\n7680×4800<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

16:9<\/strong>
\nTento form\u00e1t obrazu je v dne\u0161n\u00ed dob\u011b nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed. Vys\u00edl\u00e1 v n\u011bm jak televize tak jsou v tomto form\u00e1tu vyr\u00e1b\u011bny i displeje telefonu a atd. Pomali\u010dku za\u010dal kolem roku 2000 vytla\u010dovat form\u00e1t 4:3 kter\u00fd byl u n\u00e1s (a nejenom u n\u00e1s) velmi roz\u0161\u00ed\u0159en\u00ed.<\/p>\n

 <\/p>\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n
Jm\u00e9no
\nstandartu<\/td>\n		Rozli\u0161en\u00ed<\/td>\n<\/tr>\n
WVGA<\/td>\n854\u00d7480<\/span><\/td>\n<\/tr>\n
<\/td>\n1280\u00d7720<\/span><\/td>\n<\/tr>\n
<\/td>\n1366\u00d7768<\/span><\/td>\n<\/tr>\n
HD+<\/span><\/td>\n1600\u00d7900<\/span><\/td>\n<\/tr>\n
HD-1080<\/td>\n1920\u00d71080<\/span><\/td>\n<\/tr>\n
QUXGA<\/td>\n3200\u00d72560<\/span><\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4:3<\/strong>
\nJako posledn\u00ed uvedu rozli\u0161en\u00ed videa (displeje) ve form\u00e1tu 4:3.<\/p>\n

 <\/p>\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Jm\u00e9no
\nstandartu<\/td>\n		Rozli\u0161en\u00ed<\/td>\n<\/tr>\n
QVGA<\/td>\n320\u00d7240<\/span><\/td>\n<\/tr>\n
B&W
\nMacintosh\/Macintosh LC<\/td>\n		512\u00d7384<\/span><\/td>\n<\/tr>\n
VGA<\/td>\n640\u00d7480<\/span><\/td>\n<\/tr>\n
SVGA<\/td>\n800\u00d7600<\/span><\/td>\n<\/tr>\n
XGA<\/td>\n1024\u00d7768<\/span><\/td>\n<\/tr>\n
XGA+<\/td>\n1152\u00d7864<\/span><\/td>\n<\/tr>\n
<\/td>\n1280\u00d7960<\/span><\/td>\n<\/tr>\n
<\/td>\n1360\u00d71024<\/span><\/td>\n<\/tr>\n
SXGA+<\/td>\n1400\u00d71050<\/span><\/td>\n<\/tr>\n
UXGA<\/td>\n1600\u00d71200<\/span><\/td>\n<\/tr>\n
QUXGA<\/td>\n3200\u00d72400<\/span><\/td>\n<\/tr>\n
HUXGA<\/td>\n6400\u00d74800<\/span><\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Obnovovac\u00ed frekvence<\/strong>
\nJedn\u00e1 se o po\u010det sn\u00edmk\u016f za sekundu. Doporu\u010duji ponechat „origin\u00e1l“.<\/p>\n

Cropper<\/strong>
\nV\u0161imn\u011bte si tla\u010d\u00edtka Cropper po kliknut\u00ed se dostanete do \u010d\u00e1sti programu kde budete moct doslova „hr\u00e1t si“ form\u00e1tem obrazu p\u0159\u00edpadn\u011b odstranit \u010dern\u00e9 pruhy. Pokud se chcete zbavit \u010dern\u00fdch pruh\u016f doporu\u010duji pou\u017e\u00edt volbu mode a nastavit j\u00ed na auto detect. Budete-li cht\u00edt upravit form\u00e1t obrazu ru\u010dn\u011b varuji, \u017ee p\u0159i nedodr\u017een\u00ed spr\u00e1vn\u00e9ho pom\u011bru stran , m\u016f\u017ee nastat probl\u00e9m se spu\u0161t\u011bn\u00edm videa.<\/span><\/p>\n

 <\/p>\n

\u010c\u00e1st informac\u00ed byla \u010derp\u00e1na ze str\u00e1nek: http:\/\/cs.wikipedia.org\/wiki\/Rozli%C5%A1en%C3%AD<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

MediaCoder p\u0159ev\u00e1d\u00ed multimedi\u00e1ln\u00ed form\u00e1ty. Nab\u00edz\u00ed opravdu \u0161irok\u00e9 rozmez\u00ed pou\u017eitelnosti pro t\u00e9m\u011b\u0159 v\u0161echny zn\u00e1m\u00e9 multimedi\u00e1ln\u00ed form\u00e1ty. P\u0159evod z form\u00e1t\u016f MP G, VOB, AVI, RMVB, MOV, MP4 do AVI, MKV, MP4 (Xvid, DivX, H.264), MP3, OGG, AAC. Konverze VCD, DVD form\u00e1t\u016f na MPEG, grabov\u00e1n\u00ed z audio CD do APE, FLAC, WAV, MP3, …<\/p>\n","protected":false},"author":1,"featured_media":327,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0},"categories":[4,3],"tags":[27,23,25,24,26,42,32,28,33,47,35,45,39,38,46,18,40,22,36,29,37,41,30,44,34,19,43,31,20,21],"_links":{"self":[{"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/posts\/12"}],"collection":[{"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deven.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12"}],"version-history":[{"count":87,"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/posts\/12\/revisions"}],"predecessor-version":[{"id":14,"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/posts\/12\/revisions\/14"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.deven.cz\/index.php?rest_route=\/wp\/v2\/media\/327"}],"wp:attachment":[{"href":"https:\/\/www.deven.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deven.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deven.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}