Dear Mr. Chen, Thanks for your information.
The following is the result that I tried to play MP4 files on the Firefox OS enabled Pandaboard by changing the codec flag. In both cases, I realized that the MP4 decoders were not activated. 1) HW decoder: The message appeared on the display "No video with supported format and MIME type found". 2) SW decoder: The video player was activated, but no video could be played. Furthermore I have found out the current situations so far by using adb logcat. Sincerely yours, Hiro _______________________________________________ dev-b2g mailing list dev-b2g@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-b2g