H.264 Video Codec

[giovanbattista]

http://www.apple.com/pr/library/2004...quicktime.html


Chi mi può dare delle info magari in italiano?


H.264 Video Codec Adopted for Next Generation DVDs
MPEG Developed Video Codec Key to Future High Definition DVDs
CUPERTINO, California—June 23, 2004—Apple® today announced that the DVD Forum has ratified the H.264 Advanced Video Codec (AVC) to be included in the next generation High Definition (HD) DVD format. The H.264/AVC codec was jointly developed by the Moving Picture Experts Group (MPEG) and the International Telecommunication Union (ITU) and has been ratified into the MPEG-4 specification as the next-generation video codec. H.264/AVC is based on open standards and will ship in Apple’s QuickTime® software in an upcoming release next year.

“Apple is firmly behind H.264 because it delivers superb quality digital video and is based on open standards that no single company controls,” said Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing. “QuickTime 6 has already topped 250 million downloads, making it one of the most successful media standards ever, and we will be adding support for H.264 to QuickTime next year.”

H.264/AVC is an extremely scalable video codec, delivering excellent quality across the entire bandwidth spectrum—from high definition television to video conferencing and 3G mobile multimedia. As shown in a preview at the National Association of Broadcasters convention in April, video encoded at full high definition resolution (1920x1080 24p) was played back between 6.8 and 8 Mbps on a dual-processor Power Mac® G5 delivering full HD quality at up to half the data rate of MPEG-2.

As the platform of choice for content creators worldwide, QuickTime delivers the full media experience for thousands of unique software titles, enhanced music CDs and hundreds of digital camera models. More than 250 million copies of QuickTime 6 have been downloaded in less than two years since its release. According to Frost & Sullivan’s 2004 Global Media Streaming Platform Report, between 2002 and 2003 Microsoft’s and Real Networks’ worldwide market share percentages were either stable or declining while QuickTime’s market share increased to 36.8 percent, a close second to Microsoft. Real Networks came in third place with less than 25 percent of the worldwide streaming market share. QuickTime 6.5, which also includes enhanced support for 3rd Generation Partnership Project (3GPP) and 3GPP2 mobile networks, is available as a free download for Mac® and Windows users at www.apple.com/quicktime.

Apple ignited the personal computer revolution in the 1970s with the Apple II and reinvented the personal computer in the 1980s with the Macintosh. Apple is committed to bringing the best personal computing experience to students, educators, creative professionals and consumers around the world through its innovative hardware, software and Internet offerings.

AVETE FATTO DELLE PROVE?

[*sasha ITALIA*]

che prove?

[matteos]

info qui

[cescoo78]

anche io ho trovato questo codec in un file mkv e volevo trasformarlo in avi ma nn si sente l'audio come faccio?

[MacNeo]

Non c'è tanto da fare prove: h.264 è il miglior codec video attualmente disponibile.
È il più recente, quindi sfrutta tutti gli ultimi avanzamenti negli studi sul video. Ovviamente richiede anche macchine più potenti (sia in codifica che in decodifica). Fare h.264 con un g3/g4 era una mezza pazzia, ci passavi le giornate. Col g5 era diventato fattibile, ora con intel è ancora meglio e infatti ho realmente iniziato a usarlo per codificare i miei filmati.
divx non ne faccio da anni... prima dell'h.264 ho sempre usato l'mpeg4 (che uso ancora per le cose piccole, più che altro per la velocità).