我们有一个现有的 IONIC 应用程序，自从 iOS 13.0 发布以来，我们遇到了视频转码问题。 当从camera.getPicture(sourceType=PHOTOLIBRARY)读取文件路径并传递给videoEditor.transcodeVideo()时，它会无限期地继续调用值为0的进度回调。它不会抛出任何错误，也不会调用回调完成。
videoEditor.transcodeVideo() 不适用于某些运行 iOS 13.0 + 的真实 iPhone 设备。
我在 iOS 13.0 的模拟器上尝试了相同的代码，令人惊讶的是它有效。
我尝试了传递给 transcodeVideo() 的不同文件 URL - 无论是规范化 URL 还是完整 URL - 没有机会!
我尝试对从相机(而不是照片库 - captureVideo() 函数)拍摄的视频进行转码，效果非常好。
openFromLibrary() { //DOES NOT WORK
const optionsFiles: CameraOptions = {
quality: 50,
destinationType: this.camera.DestinationType.FILE_URI,
mediaType: this.camera.MediaType.VIDEO,
targetWidth: 450,
targetHeight: 450,
sourceType: this.camera.PictureSourceType.PHOTOLIBRARY
}
this.camera.getPicture(optionsFiles).then((data) => {
let model = {
fullPath: data,
name: data.substring(data.lastIndexOf('/') + 1)
}
//model.fullPath is something like:
//file:///private/var/mobile/Containers/Data/PluginKitPlugin/DE8E75E9-BF8B-4990-8F01-3874169D65E0/tmp/trim.4F8792C3-D9EC-450D-9E05-2D96C1CF5AE5.MOV
this.TranscodeVideo(model);
}, (err) => {
console.log(err)
})
}
captureVideo() { //WORKS
let options: CaptureVideoOptions = { limit: 1, quality: 1 };
this.mediaCapture.captureVideo(options).then((data: MediaFile[]) => {
this.TranscodeVideo(data[0]);
},
(err: CaptureError) => console.error(err)
);
}
TranscodeVideo(data: any) {
let fileUri = data.fullPath;
let outputFileName = this.removeExtension(data.name) + new Date().getMilliseconds() + '_transcoded-output';
console.log("fileUri: " + fileUri);
console.log("outputFileName: " + outputFileName);
this.videoEditor.transcodeVideo({
fileUri: fileUri,
outputFileName: outputFileName,
outputFileType: this.videoEditor.OutputFileType.MPEG4,
progress: (info: number) => {
//This gets called indefinitely ... with info = 0
console.log('progress' + info)
}
}).then(
(fileUri: string) => {
//This never gets called
console.log('completed')
}
).catch((error: any) => {
//This never gets called
alert(error)
});
}
预期结果是我从模拟器的输出中得到的结果:
**2019-10-01 13:41:34.518254-0700 MyApp[1120:13425] fileUri: file:///Users/admin/Library/Developer/CoreSimulator/Devices/6E600D79-C397-4B55-B776-DE036DBFCA7C/data/Containers/Data/PluginKitPlugin/5F323D37-2DE5-4440-BCC0-C07D91F7F77E/tmp/trim.2BB1FF35-883B-4CFE-8EC0-2482E4A09321.MOV**
**2019-10-01 13:41:34.518505-0700 MyApp[1120:13425] outputFileName: trim.2BB1FF35-883B-4CFE-8EC0-2482E4A09321501_transcoded-output**
**2019-10-01 13:41:34.642996-0700 MyApp[1120:13425] input videoWidth: 360.000000**
**2019-10-01 13:41:34.643182-0700 MyApp[1120:13425] input videoHeight: 480.000000**
**2019-10-01 13:41:34.643264-0700 MyApp[1120:13425] output newWidth: 360**
**2019-10-01 13:41:34.643323-0700 MyApp[1120:13425] output newHeight: 480**
**2019-10-01 13:41:34.643522-0700 MyApp[1120:13425] THREAD WARNING: ['VideoEditor'] took '124.734131' ms. Plugin should use a background thread.**
**2019-10-01 13:41:34.662540-0700 MyApp[1120:13538] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x6000033c4600> F8BB1C28-BAE8-11D6-9C31-00039315CD46**
**2019-10-01 13:41:34.667810-0700 MyApp[1120:13538] [ddagg] AggregateDevice.mm:776 couldn't get default input device, ID = 0, err = 0!**
**2019-10-01 13:41:34.701108-0700 MyApp[1120:13425] progress0**
**2019-10-01 13:41:34.889640-0700 MyApp[1120:13530] Video export succeeded**
**2019-10-01 13:41:34.890443-0700 MyApp[1120:13425] progress100**
**2019-10-01 13:41:34.894357-0700 MyApp[1120:13425] completed**
但是我得到的是不确定的进度数 = 0，这是我从运行 iOS 13.0 的 iPhone 设备记录的内容:
**2019-10-01 13:46:40.599042-0700 MyApp[458:25050] fileUri: file:///private/var/mobile/Containers/Data/PluginKitPlugin/DE8E75E9-BF8B-4990-8F01-3874169D65E0/tmp/trim.521777DB-3325-4E83-98F6-BEDF14EBDC9C.MOV**
**2019-10-01 13:46:40.599279-0700 MyApp[458:25050] outputFileName: trim.521777DB-3325-4E83-98F6-BEDF14EBDC9C594_transcoded-output**
**2019-10-01 13:46:40.617653-0700 MyApp[458:25050] input videoWidth: 360.000000**
**2019-10-01 13:46:40.617717-0700 MyApp[458:25050] input videoHeight: 480.000000**
**2019-10-01 13:46:40.617747-0700 MyApp[458:25050] output newWidth: 360**
**2019-10-01 13:46:40.617780-0700 MyApp[458:25050] output newHeight: 480**
**2019-10-01 13:46:40.617903-0700 MyApp[458:25050] THREAD WARNING: ['VideoEditor'] took '17.159912' ms. Plugin should use a background thread.**
**2019-10-01 13:46:40.624098-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:40.624256-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:41.633175-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:42.639211-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:43.642919-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:44.649573-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:45.653984-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:46.661094-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:47.665412-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:48.669655-0700 MyApp[458:25050] progress0**
**2019-10-01 13:46:49.674255-0700 MyApp[458:25050] progress0**
...
使用的插件有:VideoEditor、Camera
最佳答案
截至 2020 年 12 月 14 日，此问题已在 cordova-plugin-camera 5.0.1 版本上修复
“cordova-plugin-camera”:“5.0.1”，
关于ios - iOS 13.0 IONIC 中的视频转码问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58205720/