M4V → MKV

Tá roinnt M4V comhaid criptithe ag leibhéal bitstream ag an siopa nó na bogearraí a d'eisigh iad, agus ní féidir sruth criptithe a dhíchódú againn nó ag rud ar bith eile gan an eochair cheadúnais. Comhaid a thaifead tú, a onnmhairítear nó a íoslódáil gan chosaint a thiontú de ghnáth; ní bheidh ceannach ceadúnaithe, agus ní féidir le haon tiontaire gealltanas a dhéanamh go macánta eile. Ní féidir le ceannacháin DRM-chosanta M4V a thiontú ag rud ar bith; ach tá comhaid M4V gan chosaint convertible, agus ní mór imreoirí neamh-Apple go minic ar an síneadh athainmnithe.

B'fhéidir nach féidir leis. Déantar M4V a dhíchódú ag sileacain tiomnaithe ar fhóin, táibléad agus teilifíseáin, agus sin an fáth go n-imríonn sé gan an ceallraí a leathnú. De ghnáth, titeann MKV ar ais chuig díchódú bogearraí ar na crua-earraí céanna - ualach LAP níos airde, gléas níos teo, agus frámaí a thit ar ábhar 4K. Tá MKV beagnach aon tacaíocht crua-earraí dúchais - fóin, brabhsálaithe agus teilifíseáin gá de ghnáth VLC nó remux sula mbeidh siad ag imirt air.

Coinnigh an ceann is fearr leat, mar níl aon cheann níos fearr ná an ceann eile. Tá ceann acu seo tógtha le haghaidh comhoiriúnachta athsheinm agus an ceann eile le haghaidh gach rud a d' fhéadfadh a bheith i gcomhad, agus déanann siad trádáil lena chéile díreach ar an líne sin. Is é an freagra praiticiúil don chuid is mó de na leabharlanna cartlann a dhéanamh sa choimeádán saibhir gnéithe agus é a easpórtáil go dtí an ceann comhoiriúnach ar éileamh. Coinníonn M4V marcóirí chaibidil, saothar ealaíne agus rianta fotheideal sa chruth a bhfuil an app Apple TV ag súil, a chailleann MP4 plain go minic. Is MKV an coimeádán cartlainne de rogha toisc go stórálann sé rianta fuaime unlimited, fotheidil bog, marcóirí chaibidil agus ealaín chlúdach i gcomhad amháin.

It depends on the MKV 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. Is MKV Matroska, coimeádán oscailte a ceapadh i 2002 gan srianta ceadúnaithe agus aon uasteorainn ar cad is féidir é a shealbhú.

Yes, the main audio track comes through, re-encoded to a codec the MKV 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.

Yes. The frame rate is kept unless you change it: a 24 fps M4V stays 24 fps in the MKV. 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.

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.

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.

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.

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.

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 MKV are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.