Er zit wel een kern van waarheid in; de codecs van Apple ondersteunen alleen het Baseline profile en (een deel van) het Main profile dat daarna komt. Er zijn ook nog complexere profielen, en die ondersteunt de Apple codec dus niet, maar horen wel bij de H.264 standaard. Daarom heb je af en toe VLC oid nodig, want die ondersteunt H.264 wel volledig. Waarom Apple het niet volledig ondersteunt is me een raadsel, zeker omdat ze er zo mee zitten te schermen.
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The standard includes the following seven sets of capabilities, which are referred to as profiles, targeting specific classes of applications:
Baseline Profile (BP): Primarily for lower-cost applications with limited computing resources, this profile is used widely in videoconferencing and mobile applications.
Main Profile (MP): Originally intended as the mainstream consumer profile for broadcast and storage applications, the importance of this profile faded when the High profile was developed for those applications.
Extended Profile (XP): Intended as the streaming video profile, this profile has relatively high compression capability and some extra tricks for robustness to data losses and server stream switching.
High Profile (HiP): The primary profile for broadcast and disc storage applications, particularly for high-definition television applications (this is the profile adopted into HD DVD and Blu-ray Disc, for example).
High 10 Profile (Hi10P): Going beyond today's mainstream consumer product capabilities, this profile builds on top of the High Profile — adding support for up to 10 bits per sample of decoded picture precision.
High 4:2:2 Profile (Hi422P): Primarily targeting professional applications that use interlaced video, this profile builds on top of the High 10 Profile — adding support for the 4:2:2 chroma sampling format while using up to 10 bits per sample of decoded picture precision.
High 4:4:4 Predictive Profile (Hi444PP): This profile builds on top of the High 4:2:2 Profile — supporting up to 4:4:4 chroma sampling, up to 14 bits per sample, and additionally supporting efficient lossless region coding and the coding of each picture as three separate color planes.
In addition, the standard now contains four additional all-Intra profiles, which are defined as simple subsets of other corresponding profiles. These are mostly for professional (e.g., camera and editing system) applications:
High 10 Intra Profile: The High 10 Profile constrained to all-Intra use.
High 4:2:2 Intra Profile: The High 4:2:2 Profile constrained to all-Intra use.
High 4:4:4 Intra Profile: The High 4:4:4 Profile constrained to all-Intra use.
CAVLC 4:4:4 Intra Profile: The High 4:4:4 Profile constrained to all-Intra use and to CAVLC entropy coding (i.e., not supporting CABAC).
Specs van de AppleTV (en volgens mij ook Quicktime 7):
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Video formats supported:
H.264 and protected H.264 (from iTunes Store): Up to 5 Mbps, Progressive Main Profile (CAVLC) with AAC-LC audio up to 160 Kbps (maximum resolution: 1280 by 720 pixels at 24 fps, 960 by 540 pixels at 30 fps) in .m4v, .mp4 and .mov file formats
Digistorm wijzigde dit bericht 16-04-2007 18:43 (77%)
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Door: 
. Als de hack goed werkt en je kunt dus met een grotere HD (160GB = 100 euro) gewoon 720p films bekijken in het Matroska format dan is Apple op dit moment de goedkoopste oplossing! Ja, zelfs goedkoper dan de Aldi 
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