Thank you for your reply. I hope this is the info: MPEG AAC Audio (mp4a) Sample rate: 44100hz AAC Extension: SBR I have another file where the audio does play, but it has: It does not have the AAC extension: SBR but a sample rate of 48000. I am not at all well versed in this. so any advice would be ...

Hi folks A couple of years ago (i.e. Dec, 2013!) I stored my trusty DP-H1, as I did not need it. Today, I resurrected it and to my astonishment, it works. I found that some files (MP4) play video but not audio - is that because the DP-H1 does not support the new MP4 audio codecs? It has the last fir...