Safari:无法从blob网址动态加载视频 [英] Safari: unable to dynamically load video from blob url
问题描述
我正在尝试为html5视频代码实现动态加载。
i'm trying to implement a dynamic loading for an html5 video tag.
当用户通过<<输入类型=文件>
元素,我想将其动态加载到< video>
元素,并将其附加到正文。
when a user picks a video file via the <input type="file">
element, i want to load it dynamically to a <video>
element, and append it to body.
以下代码适用于Chrome但不适用于Safari:
the following code works on Chrome but not on Safari:
function load_video(file) { // this came from <input type="file"> change event
var reader = new FileReader();
reader.onload = function(event) {
var blob = new Blob([event.target.result]);
window.URL = window.URL || window.webkitURL;
var blobURL = window.URL.createObjectURL(blob);
$('body').append('<video controls width="320" src="' + blobURL + '" onloadedmetadata="alert('loaded meta data!')"></video>');
}
}
现在,
如果我要更换 src ='+ blobURL +'
带有本地文件路径,例如 - /media/videos/vid1.mp4
,视频也在Safari中加载,但我需要它从 blobURL
加载视频。
now,
if i'll replace src="' + blobURL + '"
with a local filepath, say- /media/videos/vid1.mp4
, the video loads in Safari as well, but I need it to load the video from blobURL
.
有什么建议吗?
非常感谢。
更新:
很遗憾,这是Safari中的一个已知错误(不受媒体后端支持)。
as Rod says, unfortunately it's a known bug in Safari (not supported by it's media backend).
推荐答案
我在Safari 6.1中遇到了同样的问题,在尝试从输入加载文件时得到 MEDIA_ERR_SRC_NOT_SUPPORTED
,如下所示:
I have the same exact issue with Safari 6.1, getting MEDIA_ERR_SRC_NOT_SUPPORTED
when trying to load a file from an input, like so:
var fileInput = document.querySelector('#file'),
video = document.querySelector('video');
fileInput.addEventListener('change', function(evt){
evt.preventDefault();
var file = evt.target.files[0];
var url = window.URL.createObjectURL(file);
video.src = url;
video.addEventListener('error', function(err){
// This craps out in Safari 6
console.error(video.error, err);
alert('nay :(');
});
});
尝试 video.addEventListener('error',logError)$如果您遇到同样的问题,请查询c $ c>。我怀疑Safari不支持带有
blob
-type source的视频。
Try video.addEventListener('error', logError)
or something to figure out if you have the same issue. I suspect Safari doesn't support yet videos with blob
-type source.
UPDATE :是的,这是一个错误。请参阅 https://bugs.webkit.org/show_bug.cgi?id=101671 并帮助我们让webkit维护者这需要修复。
UPDATE: Yup, it's a bug. See https://bugs.webkit.org/show_bug.cgi?id=101671 and help us let the webkit maintainers this is something that needs to be fixed.
UPDATE,2015 :现在可以使用,更新了代码。
UPDATE, 2015: It works now, updated the code.
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