> On Jun 9, 2016, at 6:03 PM, George Toledo <gtole...@gmail.com> wrote: > > Does Quicklook play audio of a previewed file at the sample rate it was > encoded at, or is it somehow doing a samplerate conversion on the fly?
QuickLook is just calling AVFoundation, which is calling CoreAudio. CoreAudio [obviously] tries to play audio at the correct speed. At a low level, that means adapting the sample rate of the encoded audio to the rate of the current audio output hardware. So yeah, that may involve sample rate conversion. (Usually the audio hardware runs at at 44.1KHz, but I’ve seen situations on some devices where it’s at 48, and if you have some high-end audio interface connected, that might be at 192…) —Jens _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
