Local MKV file with AAC = no sound

Hello,

I am using the sony 2011-us profile. When attempting to play a MKV file with AAC audio, I get no audio. I did notice the transcoded file changes the audio format to AAC (ADTS). Not sure if this is the culprit...

ffmpeg -i

  Code:

ffmpeg version 1.1.4 Copyright (c) 2000-2013 the FFmpeg developers
  built on Mar 23 2013 15:34:14 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-libvpx --enable-librtmp --enable-libxvid --enable-libass
  libavutil      52. 13.100 / 52. 13.100
  libavcodec     54. 86.100 / 54. 86.100
  libavformat    54. 59.106 / 54. 59.106
  libavdevice    54.  3.102 / 54.  3.102
  libavfilter     3. 32.100 /  3. 32.100
  libswscale      2.  1.103 /  2.  1.103
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, matroska,webm, from 'Mickey's.Choo.Choo.Express.mkv':
  Metadata:
    creation_time   : 2009-12-18 20:41:37
  Duration: 00:47:01.99, start: 0.000000, bitrate: 595 kb/s
    Chapter #0.0: start 0.105000, end 2821.986000
    Metadata:
      title           : 00:00:00.105
    Stream #0:0: Video: h264 (High), yuv420p, 704x384, SAR 1:1 DAR 11:6, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Stream #0:1(eng): Audio: aac, 44100 Hz, stereo, fltp (default)
    Metadata:
      title           : English

Media Info original file:

  Code:

General
Unique ID                                : 232764635720230171267529713581341248243 (0xAF1CD693CD9E56D18642516D48B78AF3)
Complete name                            : C:\Mickey's.Choo.Choo.Express.mkv
Format                                   : Matroska
Format version                           : Version 2
File size                                : 200 MiB
Duration                                 : 47mn 1s
Overall bit rate                         : 596 Kbps
Encoded date                             : UTC 2009-12-18 20:41:37
Writing application                      : mkvmerge v2.9.7 ('Tenderness') built on Jul  1 2009 18:43:35
Writing library                          : libebml v0.7.7 + libmatroska v0.8.1

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L3.0
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 7 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 47mn 1s
Nominal bit rate                         : 538 Kbps
Width                                    : 704 pixels
Height                                   : 384 pixels
Display aspect ratio                     : 1.85:1
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)                       : 0.083
Writing library                          : x264 core 72 r1222 d0ee6f8
Encoding settings                        : cabac=1 / ref=7 / deblock=1:1:1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=0.4:0.0 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=6 / nr=0 / decimate=1 / mbaff=0 / bframes=16 / b_pyramid=1 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=0 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / mbtree=0 / bitrate=538 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:0.60
Default                                  : Yes
Forced                                   : No

Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : HE-AAC / LC
Codec ID                                 : A_AAC
Duration                                 : 47mn 1s
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 44.1 KHz / 22.05 KHz
Compression mode                         : Lossy
Title                                    : English
Language                                 : English
Default                                  : Yes
Forced                                   : No

Menu
00:00:00.105                             : en:00:00:00.105


Media Info for transcoded file:

  Code:

General
ID                                       : 1 (0x1)
Complete name                            : C:\transcoding-temp-446-sony2011us-ORIGINAL.stf
Format                                   : MPEG-TS
File size                                : 225 MiB
Duration                                 : 47mn 1s
Overall bit rate mode                    : Variable
Overall bit rate                         : 669 Kbps

Video
ID                                       : 256 (0x100)
Menu ID                                  : 1 (0x1)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L3.0
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 7 frames
Codec ID                                 : 27
Duration                                 : 47mn 1s
Nominal bit rate                         : 538 Kbps
Width                                    : 704 pixels
Height                                   : 384 pixels
Display aspect ratio                     : 1.85:1
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.083
Writing library                          : x264 core 72 r1222 d0ee6f8
Encoding settings                        : cabac=1 / ref=7 / deblock=1:1:1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=0.4:0.0 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=6 / nr=0 / decimate=1 / mbaff=0 / bframes=16 / b_pyramid=1 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=0 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / mbtree=0 / bitrate=538 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:0.60

Audio
ID                                       : 257 (0x101)
Menu ID                                  : 1 (0x1)
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format version                           : Version 4
Format profile                           : HE-AAC / LC
Muxing mode                              : ADTS
Codec ID                                 : 15
Duration                                 : 47mn 1s
Bit rate mode                            : Variable
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 44.1 KHz / 22.05 KHz
Compression mode                         : Lossy
Language                                 : English

Menu
ID                                       : 4096 (0x1000)
Menu ID                                  : 1 (0x1)
Duration                                 : 47mn 1s
List                                     : 256 (0x100) (AVC) / 257 (0x101) (AAC, English)
Language                                 :  / English
Service name                             : Service01
Service provider                         : FFmpeg
Service type                             : digital television


[Illico]

@koan00 : HE-AAC audio is not supported, need to be transcoded.


With ffmpeg:
Stream #0:1(eng): Audio: aac, 44100 Hz, stereo, fltp (default)

@Zip, I'm not sure but, does "fltp" expression on ffmpeg output means HE-AAC ?

[zip]

http://ffmpeg.org/doxygen/trunk/samplef ... ec2d81ba1b

I am having the same problem with a similar setup (2011 Sony TV).

In particular, I had serviio 0.6.2 with ffmpeg-0.7.13 installed, and it was working fine.

I just upgraded serviio to 1.2.1 (and also installed ffmpeg 1.2.1), and I started having problems. Non-AAC mkv's are transcoded fine.

This does not work:

Stream #0:0(eng): Video: h264 (High), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Stream #0:1: Audio: aac, 48000 Hz, stereo, fltp (default)
Stream #0:2: Subtitle: subrip (default)

This works:

Stream #0:0: Video: h264 (High), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)

After version 0.6.2 I believe the Sony profile was changed to allow the TV to natively decode AAC instead of transcoding it (before it was all transcoded).

However the TV is a bit picky on what it accepts. As of right now, the profile logic is not setup to properly feed the TV only the AAC audio it can actually decode. The fix for me is to simply go back to the previous working method and transcode the AAC again.

In your profiles.xml file, at about line 660 you should see text like this:

  Code:

<Matches container="matroska" vCodec="h264" aCodec="aac" />

Delete it, or comment it out like this:

  Code:

<!-- Matches container="matroska" vCodec="h264" aCodec="aac" / -->

Or you can use the profile file that I am using now. It has 2 changes: 1) Trancodes the AAC audio. and 2) Removes all of the DAR attributes (this fixes a lot of my content being weirdly stretched by serviio).

Yes, I ended up doing this, too, (based on another post), and now it works.

Hmm.. It seems to me, though, that the profile for the Sony TVs, then, should be a bit conservative, until the profile logic is correct for all models. I vote for reverting the profile, in the shipping profile, so that people don't get into the same issue me (and other people) have hit.

I have mentioned the same sentiment in others threads as well. I just submitted a bug ticket on the issue. Please add your thoughts: https://bitbucket.org/xnejp03/serviio/i ... io-changes

[zip]

Illico, can you comment on the issue? I think we should transcode AAC if the detection is not 100%

[Illico]

..Or you can use the profile file that I am using now. It has 2 changes: 1) Trancodes the AAC audio.

We limited transcoding process for NAS system with low CPU,.
That is why profile has been changed to allow the TV to natively decode AAC.
But with serviio/ffmpeg, we can not distinguish HE-AAC (not supported) vs AAC (supported).
Zip, which option should be preferred ?

and 2) Removes all of the DAR attributes (this fixes a lot of my content being weirdly stretched by serviio).

Can we conclude that the DAR option should be removed for all U.S. models (2009 -> 2012)? if it 's the case, we have to make a custom 2012-us profile (and 2010-2011(us) inheritance...)

I think Zip was only referring to the Audio issue.

For DAR, I'm not sure the fix I use is widely applicable.

[Illico]

I think Zip was only referring to the Audio issue.

Yes, it is up to Zip to make the choice.

For DAR, I'm not sure the fix I use is widely applicable.

@koan00, what is your model number and region ?
Is there some other 2012 users with Display Aspect Ratio problem ?

@koan00, what is your model number and region ?
Is there some other 2012 users with Display Aspect Ratio problem ?

I have a 2011 kdl-55nx720 (US). I can't comment on the 2012 users..

[zip]

Ok, let's revert to the original state and add a comment in the profile to comment the line to avoid transcoding.

Illico, can you comment on the ticket with changes I need to make?

[Illico]

Illico, can you comment on the ticket with changes I need to make?

I post here the Sony Bravia profiles (attach on bitbucket does not work)...