Cam 1: Llwythwch eich M4V ffeiliau gan ddefnyddio'r botwm uchod neu drwy lusgo a gollwng.
Cam 2: Cliciwch y botwm 'Trosi' i ddechrau'r trosi.
Cam 3: Lawrlwythwch eich ffeil wedi'i throsi MP4 ffeiliau
M4V i MP4 Cwestiynau Cyffredin Trosi
Sut ydw i'n ail-amgodio M4V i MP4 heb golli ansawdd y fideo?
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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. Yn strwythurol, MP4 yw M4V — H.264 neu HEVC gyda AAC — gyda metadata Apple FairPlay DRM a chapiwl iTunes dewisol. Mae bron pob MP4 yn y byd naturiol yn cynnwys fideo H.264 gyda sain AAC; mae'r cynhwysydd hefyd yn cynnwys HEVC, AV1 a VP9 yn gyfreithiol.
Pam mae fy ffeil M4V yn methu trosi i MP4?
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DRM bron bob amser. Mae rhai M4V ffeiliau wedi eu cêl- ysgrifo ar lefel bitstream gan y siop neu feddalwedd a gyhoeddodd nhw, ac ni ellir datgodio llif cêl- ysgrifedig gan ni na dim arall heb yr allwedd drwydded. Mae ffeiliau rydych chi wedi eu recordio, eu hallforio neu eu lawrlwytho heb eu diogelu yn trawsnewid yn arferol; ni fydd pryniant trwyddededig yn gwneud hynny, ac ni all unrhyw drawsnewidydd ddealladwy ddisgwyl y gwrthwyneb. Ni ellir trosi pryniadau M4V sydd wedi'u diogelu gan DRM gan unrhyw beth; dim ond ffeiliau M4V heb eu diogelu sy'n trosiadwy, ac mae chwaraewyr nad ydynt yn Apple yn aml yn angen ail-enwi'r estyniad.
A fydd y MP4 yn chwarae mewn porwr pan na fydd y M4V?
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Ie, a dyna'r rheswm am y trawsnewid yn aml. Mae M4V wedi ei fewnosod mewn tudalen we naill ai'n dangos chwaraewr wedi torri neu'n gorfodi lawrlwytho, oherwydd nad oes gan borwyr ddatgodiwr ar ei gyfer. MP4 yn chwarae mewnlin drwy'r elfen fideo HTML5 naturiol heb unrhyw ategyn na rhaglen allanol. MP4 yw'r targed dosbarthu mwyaf diogel posibl - mae pob ffôn, porwr, consol, golygydd a Smart TV a adeiladwyd yn y degawd diwethaf yn chwarae MP4 heb feddalwedd ychwanegol.
Pa codec fideo mae'r MP4 allbwn yn ei ddefnyddio?
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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. MP4 yw ISO/IEC 14496-14, wedi ei safonoli yn 2001 ac yn deillio o'r un cynllun blwch QuickTime a ddefnyddir gan MOV.
A fydd fy ngherddoriaeth yn goroesi trawsnewid M4V i 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.
A allaf gadw'r gyfradd ffrâm wreiddiol wrth drosi M4V i MP4?
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Yes. The frame rate is kept unless you change it: a 24 fps M4V stays 24 fps in the MP4. The Frame Rate setting can also convert to 60, 30 or 24 fps. It changes the rate only; it does not deinterlace the video or remove 3:2 pulldown.
Faint fydd maint y ffeil yn newid o M4V i MP4?
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It depends on what happens to the video. MKV to MP4 or MOV with the default settings copies the video stream unchanged, so the size stays close to the source. Most other pairs re-encode it: a high-bitrate M4V usually comes out smaller, while an already heavily compressed one can grow. Smaller File under Quality gives the smallest output, and H.265 in the Codec setting (MP4, MOV and MKV) is usually smaller than H.264 at similar quality but plays on fewer devices.
A fydd y ffeil MP4 yn chwarae ar iPhone, Android, a Smart TVs?
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MP4 with H.264 plays on practically every phone, browser and TV. MOV with H.264 plays on Apple devices and most TVs but not on every older Android phone. MKV needs an app such as VLC on iOS, and WebM is at home in browsers. There is no device preset on this page, so choose the target format your device supports. MP4 yn cynnal dim ond un fformat is-deitlau (mov_text) a adnabyddir yn eang, ac mae sain aml-trac yn anhyblyg tu allan i chwaraewyr penbwrdd.
Faint o amser mae trosi fideo M4V awr i MP4 yn ei gymryd?
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There is no fixed time: it depends on the length, the resolution and the target format. Conversions run on our servers' CPUs with software encoders; there is no GPU acceleration. MKV to MP4 or MOV with the default settings copies the video stream and is the quickest. A re-encode to H.264 takes longer, and WebM (VP9) is the slowest target, several times slower than H.264 in our tests.
Beth yw'r cydraniad uchaf a gynhelir ar gyfer M4V i MP4?
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The converter has no resolution cap of its own; the limit is the upload size allowed on your plan, and the resolution stays as it is unless you choose 1080p, 720p or 480p. There is no HDR processing or tone mapping. When the video stream is copied (MKV to MP4 or MOV with the default settings), HDR10 passes through untouched. A re-encode drops the HDR10 mastering metadata, and with a Quality, Resolution or Frame Rate setting some pairs also reduce the video to 8-bit colour, so an HDR M4V can look washed out.
A yw fy M4V fideo yn breifat wrth drosi i MP4?
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Yes. Uploaded M4V files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted MP4 are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
A allaf torri, tocio, neu droi yn ystod y trawsnewid M4V i MP4?
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Not in the same step. Use /trim-video/ or /video-cutter/ to clip the M4V first, or /rotate-video/ to turn it, then run the M4V to MP4 conversion. Trimming first is faster than re-encoding the whole M4V just to drop unused footage.
