MPEG Zvishandiso

Chinja MPEG kuenda uye kubva kune akasiyana mafomati

Nezvedu MPEG

MPEG (Moving Picture Experts Group) imhuri yemavhidhiyo uye odhiyo compression mafomati anoshandiswa zvakanyanya kuchengetedza vhidhiyo uye kutamba.

Mashandisirwo Akajairika

Video distribution
Broadcast media
DVD video

MPEG Mibvunzo Inowanzo bvunzwa Nezvekuchinja

Chii chinonzi MPEG video faira?

MPEG ivhidhiyo yekuchengetera iyo ine imwe kana kupfuura video mapurojekiti, mabhureki ezwi, uye zvinyorwa zvinosarudzwa. Zvimwe zvemukati zvinotsigira mamwe macodecs, saka kuwirirana kunoenderana ne wrapper uye nezvinhu zviri mukati.

Chii chinonzi MPEG program stream, uye nei faira rangu richishandiswa?

Iyi ndiyo multiplex yakagadzirwa kuti ikodzwe nehardware ine basa rakajairika munguva chaiyo, kwete kuti igadziriswe pakombuta. Audio nevideo mapakeji anosangana nenguva yekumisikidza mapepa kuti set-top box ikwanise kutanga kutamba kubva chero kupi mumvura, pasina index uye pasina kuchengeta faira yose. Iyo dhizaini ndiyo imwe yezvikonzero nei MPEG zvinhu zvinotamba pazvinoita zvekare zvakajairika uye zvinokanganisa software nyowani. Video i MPEG-1 kana MPEG-2 neMP2 kana AC-3 audio, multiplexed mumvura yakagadzirwa kuti decoded ne fixed-function hardware.

Nei kutumira uye kuburitsa software ichi insists pa MPEG?

Nekuti zvese zvakavakirwa pazvo. Playout servers, DVD authoring tools uye ingest systems zvakanyorwa pamusoro pechirongwa ichi apo chaive chazvino, uye zvinhu zvine makore makumi maviri nemana ebasa hazvina kupihwa zita. Files dzichibuda kubva pazvirongwa izvi ndezvechirongwa ichi chaiva chakaitwa kuti chiite, kwete sarudzo yakaitwa nemunhu. MPEG chirongwa mabwe anodecoded ne literally chero DVD mutambi, set-top box uye broadcast chain ever built, uye ivo kutonhora bit matambudziko graciously.

I MPEG imwechete format seimwe yekuwedzera?

Yeah.

Nei browser yangu isina kutamba faira MPEG?

Mabrowser anotumira decoders kune yakajairika yakaderera runyorwa rwemafomati, uye MPEG haasi pazvo - kupihwa mvumo, mhando yecodec inokutendera, kana chete makore ayo anoichengeta kunze. Faira harisi kukuvadzwa uye desktop player ichaivhura, asi hapana chinhu chaunoita kune peji chinoita kuti mubrowser uite. Kushandura kune web-native container ndiyo chete nzira inonzwisisika yekutamba mumisoro. MPEG-2 inodiwa zvakakwana 4-6 nguva bitrate yeH.264 yeimwe vhidhiyo, uye zvinhu zvayo zvinonzi zvinongedzo, izvo zvinotaridzika zvakakombama pazvinoratidzwa.

I MPEG ichatamba pafoni kana TV pasina kusvibisa bhatiri?

Muchokwadi, zvirizvo, nekuti machip mufoni, matablets, uye matelevhizheni anodecode izvi zvakasiyana-siyana zvepamberi muzvigadzirwa zvavo zvakazvipira kusilicon, kwete pakutanga processor. Izvi ndizvo zvinosiyana pakati pevhidhiyo iyo inotamba zvakachena kwemazuva maviri neimwe iyo inopisa chigadzirwa ichi uye inodziya ichi muminutu makumi maviri. Mumwe mufananidzo unodzikira ndewekuti app inotsigira, kwete decoding — codec inoshamisa, wrapper icho chinhu icho gallery app inogona kukanganwa.

Ndinofanira kuchengeta mavhidhiyo se MPEG?

Kunyangwe kana chimwe chinhu chichida kuitwa. Mufananidzo unoramba uchivhura, uye hapana kuomarara nezvekushandura archive iyo haisi kukonzera dambudziko, asi haisi kusvikira ikozvino uko kugadzirwa kana kugadzikana kunoenda. Kuti uwane chero chinhu chitsva, mufananidzo wenguva dzose hauna kudhura chero chinhu chitsva uye unodzivirira kusangana nenyaya iyi munguva pfupi iri kutevera.

Ndeapi mazita ezvinyorwa zvinoenda kune MPEG faira?

Pamusoro pechirongwa, kana mufananidzo. MPEG haina subtitle stream yayo, saka sarudzo mbiri ndedzekuisa sidecar.srt faira mutambi anoisa pamwe nevideo, kana kupisa mufananidzo muframes panguva yekudzokorora. Sidecar inochengeta subtitle editable uye switchable asi inofamba seyechitatu faira iro rakaoma kushaya; kupisa muhupenyu hwese hwekutumira asi hazvigone kuiswa pasi mushure mekunge.

Nei MPEG kushandura kune mumwe video format?

Convert MPEG kuti MP4 kana iwe uchida universal kutamba — web browsers, mobile maturusi, smart TVs uye kushandura apps vese kutamba MP4 natively. Convert to WebM for web embedding where smaller file size matters. Convert to MOV kana uchishanda mu Final Cut kana mamwe Apple-native pipelines.

Ichava yangu iPhone kutamba akashandurwa MPEG faira?

iPhones kutamba MP4 ne H.264 kana HEVC natively. Kana yako chinangwa ndi iPhone, kushandura MPEG kuti MP4 - iyo result drops straight into Photos via AirDrop kana iCloud.