Upload your M4V file and set Quality to High Quality in the conversion options. That re-encodes the video at the highest quality setting (CRF 18 for H.264 and VP9 output), which keeps the most detail at the cost of a larger file. The default, Balanced, uses the standard setting. The MP4 output gets a codec its container supports: H.264 for MP4, MOV and MKV, VP9 for WebM. Structurally a M4V bụ a MP4 - H.264 ma ọ bụ HEVC na AAC - na-ahọrọ Apple FairPlay DRM na iTunes isiokwu metadata. N'ebe ọ bụla MP4 n'oké ọhịa bụ H.264 vidiyo na AAC audio; container na-echekwa HEVC, AV1 na VP9.
Enweghị ike ịgbanwe M4V ka MP4 na-enweghị ịgbanwe enyogo vidio ahụ?
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Ee, ọ bụghị na ihuakwụkwọ a. M4V na MP4 na-ekerịta nhazi n'okpuru nke otu, mana onyeọtụgharị na-ewepụ n'ime usoroiheomume vidio maka nke a n'ebe ọbụla n'ebe ọbụla n'ebe ọbụla, ya mere ọ na-ewe oge ka ukwuu karịa mgbanwe nke kọntịn na inyogo ahụ na-ewepụ ya. Họrọ Nhazi elu n'okpuru Nhazi ka ịnagide nkọwa ndị kasị ukwuu. M4V bụ Apple's ụdị nke MP4, ejiri iTunes na Apple TV ngwa maka fim na TV episodes. MP4 bụ ISO/IEC 14496-14, standardized na 2001 na-abịa site na otu QuickTime igbe ịdị MOV na-eji.
M4V m nwere ụda-ọsọ ndị dị iche iche - ọ ga-adịru ha niile n'ime MP4?
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Ọ dịghị. Ntụgharị na-echekwa otu ụda-tráìk, nke nwere ọtụtụ chaịnaịlụ (n'ozuzu ya bụ main mix), nakwa wepụ ndị ọzọ; enweghị nhazi iji họrọ nke ọzọ. Iji chekwaa tráìk ọzọ, remúkọọ M4V na tráìk ahụ n'oge mbụ (VLC mọọbụ ffmpeg nwere ike ime nke a), mgbe ahụ gbanwee ya. M4V na-echekwa isiokwu ndị na-egosi, ọrụ ngosi ihe ngosi nakwa isiokwu ndị na-esonụ n'ụdị Apple TV ngwa ahụ na-atụ anya, nke MP4 dị mfe na-ahapụkarị. MP4 na-akwado naanị otu n'ime usoroiheomume subtitle nke a na-ahụkarị (mov_text), nakwa ọbụna ọdachi ọdachi ọbụla n'ebe n'èzí desktọ́ọ̀pụ̀ ndị na-egwupụta.
Gịnị mere faịlụ m M4V ji agbanweghị na MP4?
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N'ụdị ọbụla DRM. Otú ọ dị, ụfọdụ M4V faịlụ ndị ahụ ejirila encrypt na bitstream n'okpuru ebe nrụọrụ weebụ mọọbụ sọftụwia nke emere ha, nakwa encrypted stream agaghị ekwe ka a decode ya site na anyị mọọbụ site na ihe ọbụla ọzọ na-enweghị kii ikikembanye. Faịlụ ị na-edebe, ebudatara mọọbụ gbanyeghị n'okpuru n'enweghị nchebe na-agbanwe agbanwe n'ụzọ ziri ezi; n'ịzụta ikikembanye agaghị, nakwa ọbụla onye na-ebugharị nwere ike ịna-ekwu na ọ bụghị. DRM-echebe M4V n'azụ ahịa nwere ike gbanwere site na ihe ọ bụla; naanị unprotected M4V faịlụ bụ convertible, na non-Apple ndị egwuregwu mgbe ụfọdụ mkpa nke mmelite rename.
Ọ ga-agbarịrị MP4 na nchọgharị mgbe M4V agaghị arụ ọrụ?
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Ee, na nke ahụ bụ n'ozuzu ya ihe mere maka ntụgharị. M4V ejikọtara na webụsaịtị na-egosi ọkpụkpọ ahụ ma ọ bụ na-egbochi ibudata, n'ihi na ọbịbịa na-ezigaghị dekoder maka ya. MP4 na-egwu n'ime n'ime site na HTML5 vidio elementị na-enweghị plugin nakwa n'enweghị usoroiheomume n'ime. MP4 bụ ihe na-eme ka ọ dị mma na-eme ka ọ dị mma - ekwentị niile, brawzer, console, editor na Smart TV e wuru na afọ gara aga na-egwu ya na-enweghị sọftụwia ọzọ.
Vidéọ̀kọ́ètị̀ ole ka ọ̀pụ̀pụ̀ MP4 na-eji?
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It depends on the MP4 container. MP4, MOV and MKV output use H.264, which plays on practically every phone, browser and TV. WebM output uses VP9. AVI, WMV and MPEG output use the older codecs those formats were designed for.
Ọ ga-adị ndụ n'ịgbanwe ụda m site na M4V gaa na MP4?
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Yes, the main audio track comes through, re-encoded to a codec the MP4 container plays, for example AAC in MP4 and MOV or Opus in WebM. Most conversions keep only that one track (the one with the most channels), so alternate languages and commentary are dropped. MP4 to MOV, and AVI, WMV, MPEG, FLV, VOB or M4V to MKV, keep every audio track.
M ga-echekwa fréèmùraịt mbụ mgbe m na-ebugharị M4V ka MP4?
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Ee. A na-echekwa fréèmù ọnụọgụgụ ma ọ bụrụ na ịgbanwee ya: 24 fps M4V na-adị 24 fps na MP4. Nhazi ọnụọgụgụ fréèmù nwere ike ịgbanwee ka 60, 30 mọọbụ 24 fps. O gbanwere ọnụọgụgụ naanị; ọ gaghị agbanwe vidio mọọbụ wepụ 3:2 pulldown.
Olee otú faịlụụhara ga-agbanwe site na M4V gaa MP4?
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Ọ dabere na ihe na-eme na video. MKV ka MP4 ma ọ bụ MOV na difọ́ọ̀ltụ̀ settings dezie video stream unchanged, ya mere na size na-adị nso na isi. Ọtụtụ ndị ọzọ abụọ re-encode ya: a elu-bitrate M4V na-emekarị na-abịa n'ihu obere, mgbe a na-adịbeghị anya na-akpụzi otu nwere ike na-eto. Smaller File n'okpuru Quality na-enye na-abaghị uru output, na H.265 na Codec setting (MP4, MOV na MKV) bụ na-emekarị obere karịa H.264 na mma dị ka ma na-egwu na ngwaọrụ ole na ole.
Faịlụ MP4 ga-egwuri na iPhone, Android, na Smart TVs?
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MP4 na H.264 na-egwu na-arụ ọrụ na ekwentị niile, nchọgharị na TV. MOV na H.264 na-egwu na Apple ngwaọrụ na TVs kasị ma ọ bụghị na niile ochie Android ekwentị. MKV chọrọ a ngwa dị ka VLC na iOS, na WebM bụ na ụlọ na nchọgharị. Enweghị ngwaọrụ preset na peeji a, ya mere họrọ ihe nlereanya gị ngwaọrụ na-akwado.
Oge ole ka ọ ga-ewe iji gbanwee 1-ọnụọgụgụ nke M4V vidio gaa na MP4?
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Enweghị oge akọwapụtara: ọ dabere na ogologo, nghọta na ntọala ntọala. Ntụgharị na-arụ ọrụ na CPUs nke sava anyị na encoders sọftụwia; enweghị GPU acceleration. MKV ka MP4 ma ọ bụ MOV na ntọala difọ́ọ̀ltụ̀ na-edebata vidiyo stream na bụ ngwa ngwa. A re-encode ka H.264 na-ewe ogologo oge, na WebM (VP9) bụ ihe nchọgharị dị n'ime, ugboro ole na ole dị n'ime karịa H.264 na nyocha anyị.
Gịnị bụ ngosipụta nke kacha nta e nyere maka M4V ruo MP4?
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Ntụgharị ahụ enweghị ntọala ntọala nke onwe ya; oke bụ ibudata nha ekwenye na atụmatụ gị, na ntọala ahụ na-adị ka ọ bụ ma ọ bụrụ na ịhọrọ 1080p, 720p ma ọ bụ 480p. Enweghị usoro HDR ma ọ bụ ịdị n'otu. Mgbe vidiyo stream na-edebata (MKV ka MP4 ma ọ bụ MOV na difọ́ọ̀ltụ̀ nhazi), HDR10 na-aga site na untouched. A re-encode droplets the HDR10 mastering metadata, na na Quality, Resolution ma ọ bụ Frame Rate setting ụfọdụ ndị enyi na-ebelata vidiyo na 8-bit agba, ya mere HDR M4V nwere ike ịhụ na-apụ.
