def _get_metadata(self, file=None):
if not hasattr(self, '_metadata_cache'):
if not self:
raise MetadataError
metadata = get_video_specs(name=self.name)
self._metadata_cache = metadata
return self._metadata_cache
def to_python(self, value):
raise Exception, 'VideoFileField to_python'
if value is None:
return value
tmp, path = tempfile.mkstemp()
os.write(tmp, self._file.read(512))
os.close(tmp)
specs = get_video_specs(path)
os.unlink(path)
if not specs:
raise exceptions.ValidationError(
_('Uploaded file is in an unsupported format.'))
def render(self, name, value, attrs=None):
output = ['<div style="margin-left: 106px">']
if value and hasattr(value, 'url'):
output.append('<b>%s</b> %s<br />' % (_('Currently:'), value))
specs = get_video_specs(value.path)
if specs:
output.append('<b>size</b> %sx%s pixels<br />' % (specs['width'], specs['height']))
output.append('<b>duration</b> %s seconds<br />' % specs['duration'])
output.append('<b>bitrate</b> %s kb/s<br />' % specs['bitrate'])
if specs['video']: output.append('<b>video stream</b> %s<br />' % specs['video'])
if specs['audio']: output.append('<b>audio stream</b> %s<br />' % specs['audio'])
output.append(_('Change:'))
output.append(super(AdminVideoWidget, self).render(name, value, attrs))
output.append('</div>')
return mark_safe(u''.join(output))
def _metadata(self):
if not hasattr(self, '_metadata_cache'):
self._metadata_cache = get_video_specs(name=self.name)
return self._metadata_cache
