Javascript - 从 mp3 文件录制音频
Javascript - Record audio from mp3 file
我想使用 MediaRecorder
来录制现有的 mp3 文件。在调用 captureStream() 之后,我尝试将 Audio
元素作为源传递给 MediaRecorder
,但它不起作用。
new MediaRecorder(new Audio('./audio.mp3').captureStream(), {
audioBitsPerSecond: 16000
});
错误:
Uncaught DOMException: Failed to execute 'start' on 'MediaRecorder':
The MediaRecorder cannot start becausethere are no audio or video
tracks available.
我该怎么做?
您需要 play()
那个音频...(等待它确实如此),否则您的流中没有任何内容可以录制。
const aud = new Audio('./audio.mp3');
aud.play().then( () => {
const stream = aud.captureStream();
const recorder = new MediaRecorder(stream);
recorder.ondataavailable = ...
});
我想使用 MediaRecorder
来录制现有的 mp3 文件。在调用 captureStream() 之后,我尝试将 Audio
元素作为源传递给 MediaRecorder
,但它不起作用。
new MediaRecorder(new Audio('./audio.mp3').captureStream(), {
audioBitsPerSecond: 16000
});
错误:
Uncaught DOMException: Failed to execute 'start' on 'MediaRecorder': The MediaRecorder cannot start becausethere are no audio or video tracks available.
我该怎么做?
您需要 play()
那个音频...(等待它确实如此),否则您的流中没有任何内容可以录制。
const aud = new Audio('./audio.mp3');
aud.play().then( () => {
const stream = aud.captureStream();
const recorder = new MediaRecorder(stream);
recorder.ondataavailable = ...
});