No sound on OPlay Mini Plus

[ankur7753]

I have connected Asus O!play mini plus via HDMI to Sony KDL-46HX850.I am getting sound on an mkv file with 2 channel aac but i am not getting any sound or very little sound even on full volume when I play any file with 5.1 audio.There is no avr or ht system involved.
The mp4's with 5.1 played perfectly via usb play on my tv.
Following is the media info

Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 2.53 GiB
Duration : 2h 22mn
Overall bit rate mode : Variable
Overall bit rate : 2 538 Kbps
Encoded date : UTC 2013-01-24 17:51:40
Tagged date : UTC 2013-01-24 17:51:40

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2h 22mn
Bit rate : 2 230 Kbps
Maximum bit rate : 14.8 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.045
Stream size : 2.22 GiB (88%)
Title : Video
Writing library : x264 core 128 r2216 198a7ea
Encoding settings : cabac=1 / ref=3 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=2230 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=25000 / vbv_bufsize=25000 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2013-01-24 17:51:40
Tagged date : UTC 2013-01-24 17:52:02

Audio #1
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : 40
Duration : 2h 22mn
Bit rate mode : Variable
Bit rate : 81.9 Kbps
Maximum bit rate : 109 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz / 24.0 KHz
Compression mode : Lossy
Delay relative to video : 83ms
Stream size : 83.8 MiB (3%)
Language : English
Encoded date : UTC 2013-01-24 17:51:52
Tagged date : UTC 2013-01-24 17:52:02

Audio #2
ID : 3
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : 40
Duration : 2h 22mn
Bit rate mode : Variable
Bit rate : 224 Kbps
Maximum bit rate : 276 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz / 24.0 KHz
Compression mode : Lossy
Delay relative to video : 83ms
Stream size : 229 MiB (9%)
Language : English
Encoded date : UTC 2013-01-24 17:51:57

 

[devilwearsprada]

Well, there is no certain reason, it might be the damaged file, or basically there might be issues with the player in playing AAC-MP4 files, which is very common, I would rather advise you to convert it to an mkv through Media Coder(Free Download) and check if it works.
Also, try the optical out, and since your file has 2 streams, try the 2-Channel audio stream.