Question

我在使用FileWrapper类尝试使用Django传输H.264视频时遇到了一个奇怪的问题。我正在使用以下视图功能：

def mp4(request, path):
  wrapper = FileWrapper(open(path, 'rb'))
  content_type = mimetypes.guess_type(path)[0]
  response = HttpResponse(wrapper, content_type=content_type)
  response['Content-Length'] = os.path.getsize(path)
  return response

该功能已映射到此URL：

  (r'^/mp4/(.*)$', 'mp4'),

我正在引用HTML5视频标记中的网址：

<video width="560" height="340" controls>
  <source src='/video/mp4//tmp/test.mp4' type='video/mp4 codecs="avc1.42E01E, mp4a.40.2"'>
</video>

但是，当我打开包含视频的页面时，视频无法播放，Django开发服务器会发出以下错误：

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 280, in run
    self.finish_response()
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 320, in finish_response
    self.write(data)
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 416, in write
    self._write(data)
  File "/usr/lib/python2.6/socket.py", line 300, in write
    self.flush()
  File "/usr/lib/python2.6/socket.py", line 286, in flush
    self._sock.sendall(buffer)
error: [Errno 104] Connection reset by peer

[05/Dec/2010 13:08:00] "GET /video/mp4//tmp/test.mp4 HTTP/1.1" 200 384329753

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 280, in run
    self.finish_response()
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 320, in finish_response
    self.write(data)
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 416, in write
    self._write(data)
  File "/usr/lib/python2.6/socket.py", line 300, in write
    self.flush()
  File "/usr/lib/python2.6/socket.py", line 286, in flush
    self._sock.sendall(buffer)
error: [Errno 104] Connection reset by peer

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 280, in run
    self.finish_response()
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 320, in finish_response
    self.write(data)
  File "/usr/lib/pymodules/python2.6/django/core/servers/basehttp.py", line 416, in write
    self._write(data)
  File "/usr/lib/python2.6/socket.py", line 300, in write
    self.flush()
  File "/usr/lib/python2.6/socket.py", line 286, in flush
    self._sock.sendall(buffer)
error: [Errno 32] Broken pipe

浏览器Google Chrome似乎尝试多次检索视频，前两次重置连接以及最后一次丢弃连接。请注意，Django会返回200 OK响应以及正确的视频大小。

以下是奇怪的部分：即使视频无法播放，我也可以右键点击播放器控件，选择将视频另存为... ，Google Chrome将很乐意下载整个视频和商店它在当地。然后，我仍然可以在Google Chrome中播放保存的视频，方法是使用file：// URL打开它。

我还尝试将视频文件放在本地网络服务器中并在视频标记中引用它，这也是有用的。

所以我认为这个问题与FileWrapper和/或Django使用迭代器处理HttpResponse的方式有关。数据在那里，它可以用保存视频... 保存，那为什么不播放？

谢谢！

Answer 1

对于那些在2019年（及以后）遇到这个问题的人，答案已经发布here。

Django，使用FileWrapper传输H.264视频（HTML5）

1 个答案: