ffmpeg --charset
时间: 2023-10-08 10:10:41 浏览: 135
I'm sorry, but the command you provided is incomplete. Could you please provide the full command along with the context of your question so that I can better assist you?
相关问题
ffmpeg charset
FFmpeg is a command-line tool for handling multimedia files. It supports a wide range of codecs, formats, and protocols.
When it comes to character encoding, FFmpeg supports a variety of character sets, including ASCII, ISO-8859-1, UTF-8, UTF-16LE, UTF-16BE, and more. You can specify the character encoding using the `-charset` command-line option.
For example, to convert a video file with subtitles encoded in UTF-8 to a different format while preserving the subtitle encoding, you can use the following command:
```
ffmpeg -i input.mp4 -sub_charenc utf8 -i subtitles.srt -c:v copy -c:a copy -c:s mov_text -metadata:s:s:0 language=eng output.mov
```
In this command, the `-sub_charenc utf8` option specifies that the subtitle file is encoded in UTF-8. The `-c:s mov_text` option specifies that the subtitles should be converted to the QuickTime Text format, which supports UTF-8 encoding. The `-metadata:s:s:0 language=eng` option specifies the language of the subtitle track.
Html中如何调用ffmpeg.js推流
在 HTML 中调用 ffmpeg.js 推流,需要使用 MediaRecorder API 和 WebRTC 技术。
首先,你需要引入 ffmpeg.js 库和推流相关的 JavaScript 库。然后,创建一个用于显示视频的 HTML 元素和一个用于显示音频的 HTML 元素。接着,使用 JavaScript 代码创建一个 MediaRecorder 对象,通过该对象获取视频和音频数据。最后,使用 WebRTC 技术将获取到的数据推流到指定的服务器。
以下是一个简单的示例代码:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>ffmpeg.js 推流示例</title>
</head>
<body>
<video id="video" width="640" height="480"></video>
<audio id="audio"></audio>
<script src="ffmpeg.js"></script>
<script src="推流相关的 JavaScript 库"></script>
<script>
const video = document.getElementById("video");
const audio = document.getElementById("audio");
navigator.mediaDevices.getUserMedia({ video: true, audio: true })
.then(stream => {
video.srcObject = stream;
audio.srcObject = stream;
const recorder = new MediaRecorder(stream);
recorder.ondataavailable = e => {
// 将数据推流到服务器
// 使用 WebRTC 技术推流
};
recorder.start();
})
.catch(error => {
console.error(error);
});
</script>
</body>
</html>
```
注意:这只是一个示例代码,具体实现还需要根据你的需求进行调整。同时,推流需要使用到服务器端的技术,这里并没有给出具体实现方式。
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