WebM → 3GP

Ní go díreach. Seinnfidh WebM inlíne i ngach brabhsálaí; ní sheinnfidh 3GP, mar sin tiocfaidh nasc íosluchtaithe nó fráma folamh imreora ar leathanach ina leabaítear é. Má tá an comhad le haghaidh suíomh gréasáin, coinnigh an WebM don Ghréasán agus déileáil leis an 3GP mar chóip chartlainne nó eagarthóireachta. Tá 3GP capped ag rúin íseal agus mona fuaime cainte-grád; upscaling ní bheidh sé a chur ar ais mion go raibh riamh gabhadh.

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. Imríonn WebM go dúchasach i ngach brabhsálaí nua-aimseartha gan aon bhreiseán, gan aon táille ceadúnais agus gan nochtadh paitinne, rud a fhágann gurb é an réamhshocrú é d'fhíseán leabaithe gréasáin. Tá comhaid 3GP beag bídeach agus decode ar an crua-earraí laige imaginable, agus sin an fáth fóin ghné agus handset íseal-deireadh taifeadadh fós é.

It depends on the 3GP 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 é 3GP an coimeádán a chaighdeánaigh an 3GPP le haghaidh fóin phóca luath, nuair a bhí físeán a d'oirfeadh scáileán 176x144 agus plean sonraí 2G.

Yes, the main audio track comes through, re-encoded to a codec the 3GP 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 WebM stays 24 fps in the 3GP. 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 WebM 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 WebM can look washed out.

Yes. Uploaded WebM files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted 3GP are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.

Not in the same step. Use /trim-video/ or /video-cutter/ to clip the WebM first, or /rotate-video/ to turn it, then run the WebM to 3GP conversion. Trimming first is faster than re-encoding the whole WebM just to drop unused footage.