iOS 模拟器视频录制 'xcrun simct' 报错

Question

检查时Xcode 8.2 changes我发现现在我们可以使用终端录制模拟器。

所以我正在尝试按照此 Apple 文档中的描述从 iOS 模拟器录制视频。

Taking a Screenshot or Recording a Video Using the Command Line

命令：

xcrun simctl io booted recordVideo demoVideo.mp4

错误：

2016-12-20 15:44:27.206 simctl[6434:984477] *** Assertion failure in +[SimDisplayVideoWriter videoWriter], /BuildRoot/Library/Caches/com.apple.xbs/Sources/CoreSimulator/CoreSimulator-338.16/SimulatorKit/SimDisplayVideoWriter.m:48
2016-12-20 15:44:27.207 simctl[6434:984477] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Failed to create metal device for video writer.'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fffa07f90db __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x00007fffb548ba2a objc_exception_throw + 48
    2   CoreFoundation                      0x00007fffa07fdc32 +[NSException raise:format:arguments:] + 98
    3   Foundation                          0x00007fffa2266d50 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
    4   SimulatorKit                        0x000000010a248c53 +[SimDisplayVideoWriter videoWriter] + 1015
    5   SimulatorKit                        0x000000010a2499e5 +[SimDisplayVideoWriter videoWriterForURL:fileType:] + 316
    6   simctl                              0x000000010a168a00 simctl + 31232
    7   simctl                              0x000000010a166bee simctl + 23534
    8   simctl                              0x000000010a170d52 simctl + 64850
    9   libdispatch.dylib                   0x00007fffb5d3fef7 _dispatch_call_block_and_release + 12
    10  libdispatch.dylib                   0x00007fffb5d370b8 _dispatch_client_callout + 8
    11  libdispatch.dylib                   0x00007fffb5d39029 _dispatch_root_queue_drain + 917
    12  libdispatch.dylib                   0x00007fffb5d38c47 _dispatch_worker_thread3 + 99
    13  libsystem_pthread.dylib             0x00007fffb5f84712 _pthread_wqthread + 1299
    14  libsystem_pthread.dylib             0x00007fffb5f841ed start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 6

iOS 模拟器和应用程序都正常工作。此错误仅显示在终端中。

我正在使用 Xcode 8.2。在 iPhone 7、7 Plus、SE 和 iOS 10.2.

的模拟器中试过

我是否遗漏了任何细节或需要安装和组件？

Answer 1

只有支持 Metal 的 Mac 才支持视频录制。如果您的系统不支持金属，您将看到带有该消息的中止。是的，我们应该使该错误消息更加用户友好。

要查看支持的系统列表，您可以查看 https://support.apple.com/en-us/HT205073

Answer 2

这也已在 Xcode 8.3 Beta 中修复：http://adcdownload.apple.com/Developer_Tools/Xcode_8.3_beta/Release_Notes_for_Xcode_8.3_beta.pdf

• xcrun 命令行工具的simctl 工具录制的视频现在支持擦除并正确导入视频编辑器。 (29654098)

我目前没有对此进行测试，但很有可能在 Xcode 的稳定版本中修复此错误

iOS 模拟器视频录制 'xcrun simct' 报错

iOS Simulator video recording with 'xcrun simct' give error

terminal

ios-simulator

xcode8.2