Samsung EH5300 - Static through PCM Digital-out playing MKV

Hi All,
I have a D6000 and I just bought an EH5300 for my bedroom.
Alas, the EH5300 only has digital-out so I had to connect it to a small box that converts Digital to analog so I can connect my wireless earphones. Digital-out is set to PCM.
I can hear great when I play mp4 files (HDTV downloads) but I hear static when I play 720p MKV files.
The difference in audio formats are:
mp4 - 2 channels at 48 Khz
MKV - AC-3 in 6 channels at 48 Khz.
Can you offer an idea why it doesn't work with MKV (the TV won't convert to PCM for Digital-out?) and if I can use transcoding to downgrade just the audio to 2 channels?
Apart from that, it works great with Serviio and I will be happy to see an E series profile soon (Currently I use the C/D one). Attached is a Device Spy output.
Thanks!
/Shmulik.
I have a D6000 and I just bought an EH5300 for my bedroom.
Alas, the EH5300 only has digital-out so I had to connect it to a small box that converts Digital to analog so I can connect my wireless earphones. Digital-out is set to PCM.
I can hear great when I play mp4 files (HDTV downloads) but I hear static when I play 720p MKV files.
The difference in audio formats are:
mp4 - 2 channels at 48 Khz
MKV - AC-3 in 6 channels at 48 Khz.
Can you offer an idea why it doesn't work with MKV (the TV won't convert to PCM for Digital-out?) and if I can use transcoding to downgrade just the audio to 2 channels?
Apart from that, it works great with Serviio and I will be happy to see an E series profile soon (Currently I use the C/D one). Attached is a Device Spy output.
Thanks!
/Shmulik.