models.py 文件源码

def video_tag(self, attrs=None):
        if attrs is None:
            attrs = {}
        else:
            attrs = attrs.copy()
        if self.thumbnail:
            attrs['poster'] = self.thumbnail.url

        transcodes = self.transcodes.exclude(processing=True).filter(error_message__exact='')
        sources = []
        for transcode in transcodes:
            sources.append("<source src='{0}' type='video/{1}' >".format(transcode.url, transcode.media_format.name))

        mime = mimetypes.MimeTypes()
        sources.append("<source src='{0}' type='{1}'>"
                       .format(self.url, mime.guess_type(self.url)[0]))

        sources.append("<p>Sorry, your browser doesn't support playback for this video</p>")
        return mark_safe(
            "<video {0}>\n{1}\n</video>".format(flatatt(attrs), "\n".join(sources)))