Mataki na 1: Loda naka 3GP fayiloli ta amfani da maɓallin da ke sama ko ta hanyar ja da sauke su.
Mataki na 2: Danna maɓallin 'Maida' don fara hira.
Mataki na 3: Sauke fayil ɗin da aka canza WebM fayiloli
3GP zuwa WebM Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan canza 3GP zuwa WebM ba tare da sake-saukar da saukar bidiyo ba?
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Idan 3GP da WebM na iya ɗaukar codec guda (H.264, H.265, VP9, AV1), mai maida zai koma zuwa wani remux: ana kwafe maganganun farko bayt-by-bayt cikin WebM kuma kawai mai riƙe da shi ya canja. Wani remux na 1 GB 3GP zuwa WebM na iya ƙarewa cikin sakan 5-15 da asarar inganci. 3GP yana da H.263 ko MPEG-4 Sashe na 2 bidiyo tare da AMR narrowband magana sauti, duk tuned ga mafi ƙarancin bitrate fiye da inganci. WebM an yi shi da nufin ya zama mai ƙunci: VP8 ko VP9 bidiyo (AV1 da aka fi amfani da shi a baya) tare da Vorbis ko Opus sauti, da kuma komai na daban.
Yanzu. 3GP ba ta da wata hanyar amfani da sautin-bayanan-da-ke-da-sauki, don haka an bukaci a rubuta sautin-bayanan ga 3GP cikin hoton ko kuma a aika da shi kamar wata fayil mai sauya. WebM na da sautin-bayanan kamar yadda za'a iya zaɓar su a cikin wani ruwa, don haka bayan canjawa za ka iya haɗa wata hanyar SRT da mai kallo zai iya kunnawa, da kashewa ko kuma sake fasalin.
Shin, za a yi wasa da WebM a cikin wani shafukai idan 3GP bai yi ba?
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Yanzu, wannan shi ne dalilin da ya sa aka yi wannan canji. 3GP da aka saka cikin wani shafi na yanar gizo yana nuna wani mai wasa da ya karya ko kuma yana tilasta wani saukewa, saboda masu bincike ba su da wani mai decoder don shi. WebM yana wasa cikin layin ta hanyar ɓangaren bidiyo na HTML5 na asali ba tare da wata ƙara ba da kuma ba tare da wata shirin ayuka na waje ba. WebM yana wasa a cikin kowane mai bincike na zamani ba tare da wata ƙaramar taga ba, ba tare da wata kudin lasisin ba da kuma ba tare da wata bayyanar patent ba, wanda ke sa shi ya zama diff ga bidiyo mai shigar da yanar gizo.
3GP da WebM duka suna da kwalban zamani - wane ne zan riƙe?
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@ action 3GP fayiloli ne ƙarami da decode a kan mafi rauni kayan aiki iya tunanin, wanda shi ne dalilin da sauki wayoyin da low-end wayoyin hannu har yanzu rikodin shi.
Shin waƙoƙin sauti masu yawa za su iya tsira daga canji daga 3GP zuwa WebM?
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Na'am — duk waƙoƙin sauti a cikin 3GP (waƙoƙin mai shiryawa, yarukan dabam, waƙoƙin bayani) ana kiyaye su a cikin WebM idan mai nema na goyon bayan waƙoƙin sauti masu yawa. MKV da MOV suna kula da waƙoƙin sauti ba tare da iyaka ba; MP4 yana goyon bayan da yawa amma wasu masu wasa da na'urorin haɗi suna ganin waƙoƙin 1 kawai; WebM ana hana shi a waƙoƙin Opus / Vorbis guda. WebM ne mai tsanani subset na Matroska da Google ya buga a cikin 2010 musamman don ba HTML5 bidiyo a royalty-free jakar.
An riƙe waƙoƙin sunaye-na-ƙasa idan an canja 3GP zuwa WebM?
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Subtitles soft (tracks da ake iya zãɓewa) suna tsira idan WebM zai iya ɗaukar su: MKV yana da SRT, ASS, SSA, PGS, VobSub a matsayin native; MP4 yana da mov_text kawai (farashin da aka rufe). Canja MKV tare da ASS styled subs zuwa MP4 zai iya sa su kasa zuwa mov_text ko kuma a toshe su. Hardsubs (an toshe su cikin bidiyo) suna tsira duk da haka.
Shin 3GP zuwa WebM na dauke da alamomin babi / DVD-style nasarar?
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Metadata na babi na canja tsakanin 3GP da WebM duk lokacin da bangarorin biyu ke goyon bayan wani atom na babi (MKV, MP4, MOV). WebM na adana babi a cikin wani ɓangaren da ya dace da Matroska, don haka MKV <-> WebM na dauke da babi-zuwa-baya cikin tsabta. AVI ba shi da wani bayani na babi, don haka canja AVI zuwa WebM zai samar da fayil da ba a raba shi ba sai idan ka ƙara alamun shafi da hannu.
Me ya faru da canzawa daga 3GP zuwa WebM?
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MKV shi ne mai sarrafa maɓallin maɓalli kawai wanda ke adana fayilolin da aka haɗa (TTF fonts for ASS subs, JPG cover art, fan-translated PDF inserts). Zuwa daga 3GP zuwa WebM yana daure waɗannan maɓallan idan WebM bai zama MKV ba — maɓallan elemental na canjawa, amma nauyin da aka haɗa yana zaune a cikin tushen. Ka riƙe 3GP a matsayin madadin idan kana dogara da maɓallan da aka haɗa.
Mene ne kodeki na fitarwa WebM ke amfani da shi bisa diff?
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An zaɓi codec ɗin diff don ya haɗu da mai riƙe WebM da kyau: MKV diff zuwa H.265 (HEVC) don mafi kyawun ƙuntata; MP4 diff zuwa H.264 don mafi faɗin goyon baya na na'ura; WebM diff zuwa VP9; AVI yana amfani da MPEG-4 ASP (DivX/Xvid lineage). Yaƙin neman zaɓe ta hanyar jerin kayan aikin codec na ci gaba — AV1 yana da samuwa ga MKV / WebM inda kake so mafi girman ƙuntata kuma zaka iya jira ta hanyar ƙuntata. WebM ne wani mummunan fit duk inda a waje na wani mai bincike - video edita, na'urorin' na asali gallery da Smart TVs sosai la'akari da shi.
Ta yaya HDR (HDR10, Dolby Vision) zai iya tsira daga 3GP zuwa WebM?
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Metadata na HDR na canzawa (HDR10 masu nuna kimar, matsakaicin matsakaicin matsakaici) yana tafiyar da WebM idan kowace ƙuƙumma da codec ɗin da aka zaɓa suna goyon baya (HEVC, AV1 a cikin MKV / MP4). Dolby Vision yana da tsananin rauni — siffar DV 5 / 7 / 8.1 a cikin 3GP tana da ƙarfi kawai a cikin MKV tare da HEVC; canjawa zuwa ƙuƙumma WebM da ba ta da ɗakin DV yana daidaita zuwa HDR10.
Shin mai canza 3GP zuwa WebM zai riƙe saurin firam mai canzawa (VFR)?
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MKV da WebM suna rikodin lokaci-da-firam na gaskiya kuma suna kula da VFR na asali, don haka 3GP VFR yana tsira cikin WebM daga cikin waɗannan sifofin ba tare da sake-samuwa ba. MP4 na adana lokaci-da-samuwa kuma amma wasu masu wasa suna tsammanin CFR; mai maida yana nuna wani "ciwon CFR" toggle wanda ke sake-samuwa VFR 3GP zuwa 24 / 30 / 60 fps WebM ga burin da ke da matsala.
Me yasa fayil ɗin WebM na ƙarami ne / ya fi girma fiye da 3GP bayan canjawa?
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Same-codec remux na samar da girman da ya kusan daidai (cikin kwandon da ke da bambanci na 0.1-2%). Canjin codec na iya juya girman da 50% ko fiye: H.264 zuwa H.265 na iya raba fayil din da rabi da ingancin gani na daidai; H.264 zuwa AV1 na raba shi da rabi a kan wani ƙananan ƙayyadadden. Zuwa daga high-bitrate 3GP (Blu-ray rip) zuwa low-bitrate WebM (web upload) shi ne dalilin da ya fi yawa na daina aiki.
3GP shine tsarin kwantena multimedia da aka kirkira don wayoyin hannu na 3G. Yana iya adana bayanan sauti da bidiyo kuma ana amfani da shi don sake kunna bidiyo ta hannu.
