ReadMe.txt
AVCompositionDebugViewer |
This sample application has an AVCompositionDebugView which presents a visual description of the underlying AVComposition, AVVideoComposition and AVAudioMix objects which form the composition made using two clips, adding a cross fade transition in between and audio ramps to the two audio tracks. |
The main files are as follows: |
APLAppDelegate.m/.h: |
The app delegate setups playback of AVMutableComposition and also initializes an APLCompositionDebugView which then represents the underlying composition, video composition and audio mix |
APLSimpleEditor.m/.h: |
Simple editor setups an AVMutableComposition using supplied clips and time ranges. It also setups AVVideoComposition to add a crossfade transition. |
AVCompositionDebugView.m/.h: |
A subclass of NSView that represents the composition, video composition and audio mix objects in a diagram. It also contains a time marker layer which is synchronized to the current player item using AVSynchronizedLayer, to track the currentTime of a player. |
main.m: |
Standard main file. |
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