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Why no audio on this .mkv conversion all of a sudden?

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I have watched alot of .mp4's of blu ray rips on my PS3 lately... I have converted them all with my Quicktime Pro player and current Perian plug-in with no problems at all. I use a Logitec surround system - the 5500z or something - the one that was so popular a few years back. Now I have encountered a few that jus will not play audio at all. Picture looks great, but no audio? I convert then place them in my "Video" folder on my USB external through my PS3.

I choose the AAC 2-channel in QT Pro, but am at a loss why some are not working now. Any clues?

Here is the info of the latest one I can't get audio from:

*** MediaInfo Mac // Plain text file report
2009-06-01 08:08:07 -0500
Information for File: POTA.mkv

General / Container Stream # 1
Total Video Streams for this File -> 1
Total Audio Streams for this File -> 1
Video Codecs Used -> AVC
Audio Codecs Used -> AAC LC-SBR
File Format -> Matroska
Play Time -> 1h 59mn
Total File Size -> 1.43 GiB
Total Stream BitRate -> 1 707 Kbps
Title (Tag) -> Planet.of.the.Apes.2001.m-HD.x264-AsCo
Encoded with -> mkvmerge v2.2.0 ('Turn It On Again') built on Mar 4 2008 12:58:26
Encoding Library -> libebml v0.7.7 + libmatroska v0.8.1
Video Stream # 1
Codec (Human Name) -> AVC
Codec (FourCC) -> V_MPEG4/ISO/AVC
Codec Profile -> [email protected]
Frame Width -> 832 pixels
Frame Height -> 416 pixels
Frame Rate -> 23.976 fps
Total Frames -> 172584
Display Aspect Ratio -> 2.35
Scan Type -> Progressive
Colorimetry -> 4:2:0
Codec Settings (Summary) -> CABAC / 10 Ref Frames
QF (like Gordian Knot) -> 0.183
Codec Settings (CABAC) -> Yes
Video Stream Length -> 1h 59mn 51s 0ms
Video Stream BitRate (Nominal) -> 1 517 Kbps
Bit Depth -> 24 bits
Video Encoder -> x264 - core 60 r886M 1075536
Video Encoder (Settings) -> cabac=1 / ref=10 / deblock=0:0:0 / analyse=0x3:0x113 / me=umh / subme=6 / rdcmp=psy / brdo=1 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=0 / mbaff=0 / bframes=16 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=1517 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=1.00 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=2:1.00
Video Stream Language -> English
Audio Stream # 1
Codec -> AAC
Codec (FourCC) -> A_AAC
Audio Stream Length -> 1h 59mn 58s 208ms
Number of Audio Channels -> 6
Audio Channel's Positions -> Front: L C R, Rear: L R, LFE
Sampling Rate -> 48.0 KHz
Bit Depth -> 16 bits
Audio Stream Language -> English

Many thanks...
Nate
 

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