Nola birkodetu MP4 MPG(e)ra bideo-kalitatea galdu gabe?
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Upload your MP4 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 MPG output gets a codec its container supports: H.264 for MP4, MOV and MKV, VP9 for WebM. MP4 formatu gehienak H.264 bideoa AAC audioarekin, eta HEVC, AV1 eta VP9 ere legez onartzen ditu. MPEG-1 edo MPEG-2 bideoa MP2 audioarekin; muxing-a eta GOP egitura.mpeg fitxategiaren berdinak dira.
MPG(e)k audio-pista bat baino gehiago eduki ditzake?
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Bai, eta MP4-ren benetako hobekuntza da. MPG-k audio-fluxu guztiak lehen mailako pista gisa tratatzen ditu, beraz, jatorrizko hizkuntzako nahasketa, dub eta zuzendariaren iruzkina fitxategi batean bizi daitezke, erreproduzitzaileak eskaera eginez gero haien artean aldatzen baitu. MPG DVDak sortzeko softwarearen luzapen bat da, kamera zaharrek eta broadcast ingest tresnek onartzen dutena, beraz, kanal horietan erabilgarria izaten jarraitzen du.
Web-orri batean txerta dezaket fitxategia MP4 MPG bihurtu ondoren?
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Ez zuzenean. MP4 arakatzaile guztietan lineaz kanpo erreproduzitzen da; MPG ez du egiten, beraz, kapsulatutako orrialde batek deskarga-esteka edo erreproduzitzaile-marko huts bat bihurtzen du. Fitxategia webgune baterako bada, gorde MP4 weberako eta tratatu MPG artxibo edo edizio-kopia gisa. MPGk MPEG-2ren muga guztiak heredatzen ditu: bit-tasa handia, tartekatzea, azpititulurik ez, eta formatu bakarraren bi hedapenen nahasketa.
Zergatik bihurtu MP4 MPG bezalako formatu zahar batera?
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Hardware askok ez duelako inoiz ezer berririk ikasi eta ez duelako inoiz ikasiko. DVD erreproduzigailuek, autoetako unitate nagusiak, kameraren erreprodukzio moduek, pantaila industrialek eta irrati-emateak jasotzen dituzten ekipo askok MPG onartzen dute eta beste ezer ez. Bihurketa eraginkortasunean jaitsiera deliberatua da, beste aukerarik ez duen gailu batean lan egiteko truke erosi dena.
Zein bideo-kodeke erabiltzen du MPG irteerak?
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It depends on the MPG 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. MPG MPEG programaren korronte bera da.mpeg bezala — hiru letrako luzapena DOS garaian trunkatua da, ez formatu desberdin bat.
Nire audio-pistak iraungo du MP4-tik MPG-ra bihurtzean?
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Yes, the main audio track comes through, re-encoded to a codec the MPG 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.
Mantendu al dezaket jatorrizko fotograma-emaria MP4 MPG bihurtzean?
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Yes. The frame rate is kept unless you change it: a 24 fps MP4 stays 24 fps in the MPG. 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.
Zenbat aldatuko da fitxategiaren tamaina MP4(e)tik MPG(e)ra?
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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 MP4 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.
MPG fitxategia iPhone, Android eta Smart TVetan erreproduzituko da?
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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.
Zenbat denbora behar da ordubeteko MP4 bideo bat MPG bihurtzeko?
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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.
Zein da MP4 eta MPG artean onartutako gehienezko bereizmena?
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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 MP4 can look washed out.
Nire MP4 bideoa pribatua da MPG bihurtzean?
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Yes. Uploaded MP4 files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted MPG are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
