Audio Distortion issue

[turbo022 0]

I am having issues with the audio sounding like it is being amplified when playing back on either the Roku or my Windows 8 client. Basically it sounds like the speakers are blown out even at really low volumes. When playing back the same media (either directly on my computer, or using Media Browser v2 through my Xbox 360) without using Media Browser 3 the audio sounds normal without any distortion. As part of the playback process, is the audio stream being amplified? For reference my versions of MB, clients, and specifics on the playback files are below.

 

Media Browser Server Version 3.0.5099.2102

Roku Version 1.16.5

Windows 8 Client Version 1.1.1.6

 

 

 

Format                                   : BDAV
Format/Info                              : Blu-ray Video
File size                                : 4.81 GiB
Duration                                 : 2h 26mn
Overall bit rate mode                    : Variable
Overall bit rate                         : 4 710 Kbps
Maximum Overall bit rate                 : 35.5 Mbps

Video
ID                                       : 4113 (0x1011)
Menu ID                                  : 1 (0x1)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.0
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 3 frames
Codec ID                                 : 27
Duration                                 : 2h 26mn
Bit rate mode                            : Variable
Bit rate                                 : 3 875 Kbps
Maximum bit rate                         : 25.0 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.078
Stream size                              : 3.95 GiB (82%)
Writing library                          : x264 core 112 r1867 22bfd31
Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / vbv_maxrate=25000 / vbv_bufsize=25000 / crf_max=0.0 / nal_hrd=vbr / ip_ratio=1.40 / aq=1:1.00

Audio
ID                                       : 4352 (0x1100)
Menu ID                                  : 1 (0x1)
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Mode extension                           : CM (complete main)
Format settings, Endianness              : Big
Codec ID                                 : 129
Duration                                 : 2h 26mn
Bit rate mode                            : Constant
Bit rate                                 : 640 Kbps
Channel(s)                               : 6 channels
Channel positions                        : Front: L C R, Side: L R, LFE
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 669 MiB (14%)
Language                                 : English

 

[Tikuf 663]

Traditionally when you convert from a 6 channel source to the 2 channel the audio is very very low and requires a volume increase so yes in these circumstances we do increase the audio.

[turbo022 0]

Is there any way for me to configure how much the volume is being increased? When I encode the audio for these videos I am already increasing the volume so that would explain why it sounds bad.

[Tikuf 663]

Not at this time. But you can always put in a feature request and see how much traction it gains.

 

"Control volume increase when converting from 6 to 2 chan"

 

Keep in mind though even if accepted it will not find it's way into the server for some time.