TYPO3 Core

It looks like the configuration is not properly merged when using the flowplayer as a fallback for rendering html5 video.

Traced this down to the following lines in 'class.tslib_content_media.php' (line 215 in TYPO3 4.7):

switch ($renderType) {
case 'flowplayer':
$conf[$conf['type'] . '.'] = array_merge((array) $conf['mimeConf.']['flowplayer.'][$conf['type'] . '.'], $typeConf);
$conf = array_merge((array) $conf['mimeConf.']['flowplayer.'], $conf);
unset($conf['mimeConf.']);

The configuration should be merged the other way around. This also applies to the rendering of "qt":
case 'qt' :
$conf[$conf['type'] . '.'] = array_merge($conf['mimeConf.']['swfobject.'][$conf['type'] . '.'], $typeConf);

Here the rendering of 'swfobject' is used instead of 'mimeConf.qtobject'.