private function getThumbUri(&$awsJob)
{
$output = $awsJob["Outputs"][0];
$thumbPrefix = $output["Key"];
$thumbPrefix = str_replace(WikiVisualTranscoder::VIDEO_EXTENSION, ".", $thumbPrefix);
$thumbUris = array();
$svc = WikiVisualTranscoder::getS3Service();
$lastKey = null;
do {
$inputs = array('Bucket' => WikiVisualTranscoder::AWS_TRANSCODING_OUT_BUCKET, 'Prefix' => $thumbPrefix);
if (!is_null($lastKey)) {
$inputs['Marker'] = $lastKey;
}
$result = $svc->listObjects($inputs);
$contents = $result['Contents'];
foreach ($contents as $key => $val) {
$thumbUris[] = $val['Key'];
$lastKey = $val['Key'];
}
} while ($result['IsTruncated']);
// Pull out the jpgs
// Grab the last thumbnail frame with pattern <key>/<filename>.{resolution}.{count}.jpg
$thumbUris = preg_grep('@.*\\.jpg$@', $thumbUris);
$thumbUri = end($thumbUris);
return $thumbUri;
}
