stream.php page does not stream videos that seem to be over 8mb

not sure why it seems to play fine on 5-7 meg videos i have control over php.ini so it can't be my host? Maybe it's my headers? you can look at the problem if you go to the url in my sig.

i just tried header('Content-Type: application/octet-stream');

i seem to be getting all the videos stopping then playing again at the start as well? it's set to auto play?

php.ini - config

;;;;;;;;;;;;;;;;;;;;;;;;;;
; php.ini user override ;
;;;;;;;;;;;;;;;;;;;;;;;;;;

max_execution_time = 900
max_input_time = 900
memory_limit = 100M
post_max_size = 100M
upload_max_filesize = 100M
magic_quotes_gpc = on


stream.php - headers

header("Content-length: $file_size");
header("Content-type: $file_type");
header("Content-Type: video/x-ms-wmv");

Is this solely a stream file size error or does it only happen with certain formats as well?

it seems to be file size only mpg's and wmv play fine when they are low in size.