With Yosemite, you can now record whatever happens on the screen of your iPhone, iPad or iPod touch, which isn't just useful for developers to show off the apps and games they build, but can also be great for things like creating little tutorials or even just recording a bug so you can help a developer or a company fix it.
To use this feature, you just connect your iOS device up to your Mac using its cable, then launch QuickTime Player.
To use this feature, you just connect your iOS device up to your Mac using its cable, then launch QuickTime Player.
The chose New Movie Recording from the File menu and then, if it's not already selected for you, choose your connected iOS device as the 'camera' source from the drop-down menu next to the record button.
Choose whether you want to record sound (either from a built-in or external mic, or the audio the iOS device itself is producing) from the same menu, then click the record icon. Once you're done, you can trim the clip (⌘T) and then easily share it to, for example, YouTube.