啱啱買左個 Sony NWZA728 型號的MP3/MP4 player, 聽所有audio files 都無問題﹐ 但 play mpeg4 個機就話 "not support file format", 點解﹖﹖﹖﹖ 明明個個係mp4 file, 點解 player 唔到﹖﹖﹖

可唔可以確定到個 mp4 係唔係真係 mp4 呢?

相信唔會有錯﹐ 在某網站 download的﹐ 說明是mp4 file format,  save 左落個腦後 file extension 也顯示為 mpeg4 file.

初時我都以為個file 唔係mp4﹐ 所用 Xilisoft converter 為mp4 file.....at the end still can't make iit.

再睇番張說明書﹐ 。。。。。"Transferable files : ......Video (MPEG-4 Simple Profile, AVC (H.264/AVC) Baseline Profile),  RSS Feed (music, video).........." what is simple profile? AVC...Baseline Profile. 係唔係一樣等如一般既mp4 file?