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Ti einai i metatropi MPG se MP4?
I metatropi MPG se MP4 einai i diadikasia metaschematismou enos archeiou video apo to palaio format MPEG-1/MPEG-2 sto synchrono pagkosmio format MPEG-4 Part 14. Ta archeia MPG chrisimopoiountan se Video CD, DVD kai psifiaki tileorasi. I metatropi se MP4 diasfalizei ti symvatotita me oles tis synchrones syskeyes kai meionei simantika to megethos tou archeiou.
MPG (MPEG) einai mia oikogeneia protypon sympiesis video pou anaptyxthikan apo tin Moving Picture Experts Group. I epektasi .mpg (i .mpeg) synithoos ypodikniei archeia MPEG-1 i MPEG-2. To MPEG-1 chrisimopoiountan se Video CD (VCD) sti dekaetia tou 1990, eno to MPEG-2 egine to protypo gia DVD kai psifiaki tileorasi (DVB).
To MP4 (MPEG-4 Part 14) einai ena synchrono protypo pou chrisimopoiei tous kodikodotes H.264 kai H.265/HEVC. To MP4 parochei simantika kaliteri sympiesi: ena archeio tis idias poiotitas katalamvanei 3-5 fores ligotero choro apo to MPG.
Technikes diafores metaxy MPG kai MP4
Istoria ton protypon MPEG
MPEG-1 (1993) - to proto protypo sympiesis video apo tin MPEG. Analysi mechri 352x288, rythmos bit mechri 1,5 Mbps.
MPEG-2 (1995) - epektasi tou MPEG-1 me ypostirixi ypsilon analyseon kai enallasomenis sarosis. Vasi tou DVD-Video (720x480/576) kai tis psifiakis tileorasis (mechri 1920x1080i).
MPEG-4 Part 14 (MP4) (2003) - synchrono container me kodikodotes H.264 kai H.265. Parochei 2-5 fores kaliteri sympiesi se sygkrisi me to MPEG-2 stin idia poiotita.
Sygkrisi charaktiristikon
| Charaktiristiko | MPG (MPEG-1) | MPG (MPEG-2) | MP4 (H.264) |
|---|---|---|---|
| Etos protypou | 1993 | 1995 | 2003 |
| Typiki analysi | 352x288 | 720x480/576, 1920x1080i | Opoiadipote mechri 8K |
| Typikos rythmos bit | 1-1,5 Mbps | 4-9 Mbps (DVD) | 2-5 Mbps (paromomia poiotita) |
| Kodikodotis ichou | MP2 | MP2, AC3, DTS | AAC, MP3, AC3 |
| Enallasomeni sarosi | Ochi | Nai | Nai (alla synithoos proodeftiki) |
Symvatotita
| Platforma | MPG | MP4 |
|---|---|---|
| Windows | Me kodikodotes | Pliri ypostirixi |
| macOS | QuickTime (periorismeno) | Pliri ypostirixi |
| Android | Periorismeno | Pliri ypostirixi |
| iOS | Den ypostirizitai | Pliri ypostirixi |
| Smart TV | Exartatai apo to montelo | Ola ta montela |
| Programata periigisis | Den ypostirizitai | HTML5 |
Pote einai aparaititi i metatropi MPG se MP4
Psifiopoiisi syllogis DVD
Ta DVD periechoun video MPEG-2. I metatropi se MP4:
- Meionei to megethos kata 3-5 fores
- Kanei to video prosvasimo se oles tis syskeyes
- Epitrepei tin apothikefsi se skliro disko i sto cloud
- Diasfalizei anparagogi se Smart TV kai kinites syskeyes
Psifiopoiisi VHS kai analogikon eggrafon
Oi engrafes apo kassetes VHS apothikevontai syxna os MPG:
- Oikogeneiaka video - engrafes apo videokameres ton dekaetion 1990-2000
- Tileoptikes ekpompes - engrafes apo TV tuners
- Video gamon kai giorton - epaggelmatikes engrafes VHS
Anparagogi se synchrones syskeyes
Ta archeia MPG dimiourgoun provlimata stis perisoteres syskeyes:
- iPhone kai iPad - den anparagoun MPG
- Polla Android - periorismeni ypostirixi MPEG-2
- Programata periigisis - to HTML5 den ypostirizei MPG
- Messageries - Telegram kai WhatsApp den anparagoun MPG sto chat
Sygkrisi megethon archeion
| Pigi | MPG (MPEG-2) | MP4 (H.264) | Exoikonomisi |
|---|---|---|---|
| Tainia DVD 2 ores | 4-8 GB | 1-2 GB | 60-75% |
| Epeisodio DVD 45 lepta | 1,5-3 GB | 400-800 MB | 60-75% |
| Psifiopoiisi VHS 1 ora | 2-4 GB | 500 MB - 1 GB | 70-80% |
| Tainia VCD 1,5 ores | 700 MB | 200-400 MB | 40-70% |
Pleonektimata tis metatropis MPG se MP4
Simantiki exoikonomisi chorou
To MPEG-2 chrisimopoiei palaious algorithmus sympiesis. O H.264 parochei 2-5 fores kaliteri sympiesi stin idia poiotita.
Pagkosmia symvatotita
To MP4 anparagetai pantou: ypologistes, smartphones, tablets, Smart TV, konsoles paichnidion, programata periigisis.
Deinterlacing
To enallassomeno video apo DVD kai TV metatrepitai se proodeftiko, exalifontas tis charaktiristikes orizonties grammes stis synchrones othones.
Σε τι χρησιμεύει η μετατροπή MPG σε MP4
Psifiopoiisi syllogis DVD
Metatropi tainion kai seiron apo diskous DVD gia apothikefsi se skliro disko kai anparagogi se opoiadipote syskeyi
Diatirisi oikogeneiakou archeiou video
Metatropi psifiopoiimenon kasseton VHS kai eggrafon videokameron se sygchono kompakt format gia makropismotiki apothikefsi
Dimosievsi sto internet
Proetoimasia video gia anortisi sto YouTube kai alles platformes pou den dechontai MPG apeftheias
Anparagogi se kinites syskeyes
Metatropi MPG gia provouli se iPhone, iPad kai Android choris egkatastasi prosetheton efarmogon
Archeia eggrafon tileorasis
Metatropi eggrafon psifiakis tileorasis gia kompakt apothikefsi kai anparagogi se Smart TV
Συμβουλές για τη μετατροπή MPG σε MP4
Energopoiiste to deinterlacing
Gia video apo DVD kai psifiaki tileorasi, energopoiiste panta to deinterlacing - allioos tha fenontai orizonties grammes stis synchrones othones.
Min afxanete tin analysi
To video DVD (720x480/576) kai VHS den periechei leptomereies gia ypsiliteri analysi. Diatirite to archiko megethos.
Epilexte H.264 gia megisti symvatotita
O H.264 ypostirizitai apo apolyta oles tis syskeyes. O H.265 exoikonomei perissotero choro alla mporei na min anparatetai se paliores tileoraseis.
Chrisimopoiiste maziki metatropi
An echete syllogi DVD i archeio eggrafon TV, anortiste ola ta archeia mazi gia na exoikonomisete chrono.