如何解决MediaRecorder仅记录一帧
我正在开发一个react native应用,在那里我正在录制画布并制作5秒的视频文件上传到服务器。一切正常,除了我所有的webm文件只有一帧。这是我的代码。请帮助我了解这里的问题。谢谢!
initMediaRecorder = () => {
const promise = new Promise((resolve) => {
const stream = this.selfieCanvas.captureStream(10);
let mediaRecorder = null;
let options;
if (MediaRecorder.isTypeSupported('video/webm; codecs=vp9')) {
options = { mimeType: 'video/webm; codecs=vp9',videoBitsPerSecond: 2500000 };
} else if (MediaRecorder.isTypeSupported('video/webm;codecs=vp8')) {
options = { mimeType: 'video/webm; codecs=vp8',videoBitsPerSecond: 2500000 };
} else {
options = 'video/vp8'; // Chrome 47
}
try {
mediaRecorder = new MediaRecorder(stream,options);
} catch (e0) {
resolve(null);
}
mediaRecorder.ondataavailable = (event) => {
console.log(`LOG - Data available ${event.data.size}`);
this.sendToSaveVideo(event.data);
};
resolve(mediaRecorder);
});
return promise;
}
captureVideo = async (oldMediaRecorder) => {
this.initMediaRecorder().then((mediaRecorder) => {
if (oldMediaRecorder !== null && typeof oldMediaRecorder !== 'undefined') {
// I don't want to stop previous recorder until I init the next recorder
oldMediaRecorder.stop();
}
if (mediaRecorder !== null) {
mediaRecorder.start();
}
this.captureVideoTimer = setTimeout(() => {
this.captureVideo(mediaRecorder);
},5000);
});
}
sendToSaveVideo = async (eventData) => {
const blobChunk = [];
blobChunk.push(eventData);
const video = new Blob(blobChunk,{ type: 'video/webm' });
saveBlobToCloud(video); // save the file to cloud
}```
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