Unfortunately, this process is not yet 100% foolproof.Īnd if so, then why is it missing so many features that are included in AV Foundation, such as MIDI playback?Īpple decides which AV Foundation capabilities and features are available to/included in a specific app's GUI. If the data is correctly converted, then control is returned to the original app and the AV Foundation initiates normal playback of the converted media content. Otherwise, control is passed to Convert MacOS structure embed along with the settings required for conversion. If not, the attempt to play the media is terminated and an appropriate modal error message is usually issued based on error trapping results. If not, control is passed to the Modernizer MacOS structure embed to determine if the content is "conversion" compatible with the system as currently configured. I.e., if the combination of media file type and compression format is programmed to be recognized as being compatible with AV Foundation playback, then the content is played. Or does QuickTime Player X use the new APIs?Īs I understand it, "Yes." That is, it uses the AV Foundation structure for playback (and editing if required) of content IFF the content is programmed by Apple as being "compatible" with the app. (I.e., any current Apple multimedia app not based on the classic QT 7 MacOS structure embed.) So, why is there no new AV Foundation player app, showcasing the benefits of the new framework?
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