How do I use AVAssetWriter to export ARKit frames to a video file
Generated on 9/6/2024
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To use AVAssetWriter to export ARKit frames to a video file, you can follow a process similar to recording spatial video as described in the session "Build compelling spatial photo and video experiences" from WWDC 2024. Here's a general outline of the steps involved:
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Set Up AV Capture Session: Create an AV capture session and configure it with an AV capture device, typically the default system camera.
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Add Input and Output: Add a device input to the session and a movie file output to manage the output and write it to disk. Connect these with an AV capture connection.
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Enable Spatial Video Recording: If you're working with spatial video, change the AV capture device to use the built-in dual wide camera, select a supported video format, and enable spatial video recording on the output.
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Handle Device Compatibility: Ensure that spatial video capture is supported on the device (e.g., iPhone 15 Pro) and handle any errors if it's not supported.
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Start Recording: Commit the configuration and start running the session to begin recording.
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Export Video: Once the recording is complete, the movie file output will provide a fully formed video file on disk.
For more detailed code examples and explanations, you can refer to the session Build compelling spatial photo and video experiences (04:33) from WWDC 2024.
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