why iTunes can't play some MP4's video, but only audio? msmong2008-08-07 04:49:46

Please help me troubleshoot MP4 playing problem in iTunes (want to play it eventually in iPod).

I downloaded 英语原人原唱歌曲视频1000部（一) MP4 files and added them to iTunes Library/Movies. I could play some of them such as "25Minutes.mp4", but when I play some others like "(EverythingIDo)IDoItForYou.mp4", it only has audio played, but no video played.

I installed klcodec413fbeta.exe but seems it still doesn't work.

贫农家的长工 and other experts, any ideas why? Thanks in advance for help.

回复：why iTunes can't play some MP4's video, but only audio?

好像real play最新版本有直接下载mp4转换到ipod的功能

感谢葳蕤, Thanks a ton, it works. But still can't understand...

Another problem is the file size is very big now, 16mb convert t

after converted MP4 to iPod version, a song size changed from 16