some of video files in shared folder on my iMac doesn't appeared on ATV

Hi all,

 

I have some weird problem.

I have used original ATV with aTV Flash for last few years without any problem until yesterday when something happens.

I have a shared folder which is acting like a media library of those video file, mostly avi files downloaded from various sources. But sometime yesterday, about 2/3rd of library suddenly disappeared from the file list on aTV. I checked the folder on Mac and every file is there.

I tried to copy it onto different folder and made it another shared folder to see if those are appeared on aTV. But only those files shown aTV is also shown in new folder as well.

every file is same format and same codec as usual.

 

Any suggestion?