Hello,
I have an issue with DD+ alias EAC3 alias Dolby Digital +.
I have 2 mkv files which contain an EAC3 audio track but mediainfo report some difference on this track between the 2 files.
My AV Receiver is an Onkyo TX-NR509
With the first mkv files, I play it via HDMI (using Media Player Classic, XBMC & PowerDVD) and my AV Receiver display "Dolby D+" so it's fine.
But on the second file my AV Receiver only display "Dolby D".
Mediainfo lite report for those 2 mkv files:
This one display : Dolby D+
Audio:
Format : E-AC-3
Codec ID : A_EAC3
This one display : Dolby D
Audio:
Format : AC-3
Codec ID : A_EAC3
Players information tells me the 2 files are running Dolby Digital Plus.
Is there a way to change the "Format" information in the MKV file like "H264 Level Editor" do ?
Is this an issue with my AV Receiver ?
Another thing, first time I use MediaInfoLite ( it was 0.7.54 version) the report told that the format for the second file was E-AC-3 but now with the last version MediaInfoLite report only AC-3 (and it still report E-AC-3 on my first mkv file).
Any idea ?
Tks !
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partial media info or a post without sample leaves rest of us just keep guessing. you forget to mention bit depth.
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https://en.m.wikipedia.org/wiki/Dolby_Digital_Plus
"Structure A Dolby Digital Plus service consists of one or more substreams. There are three types of substreams:
- Independent substreams, which can contain a single 5.1 program. Up to eight independent substreams may be present in a Dolby Digital Plus stream. The channels present in an independent substream are the traditional 5.1 channels: Left (L), Right (R), Center (C), Left Surround (Ls), and Right Surround (Rs) channels, as well as a Low Frequency Effects (Lfe) channel.
- Legacy substreams, which contain a single 5.1 program, and which correspond directly to Dolby Digital content. At most a single legacy substream may be present in a DD+ stream.
- Dependent substreams, which contain additional channels beyond the traditional 5.1 channels. As dependent substreams have the same structure as independent substreams, each dependent substream may contain up to five full-bandwidth channels and one low-frequency channel; however these channels may be assigned to different speaker placements. Metadata in the substream describes the purpose of each included channel.
So described behavior is reasonable - some devices see legacy i.e. AC3 stream, some full E-AC3 stream. -
Most of the time hardware decoders for E-AC3 are backward compatible. They can decode AC3 as a main stream or as a sub-stream. No idea about software decoders, But, E-Ac3 can be downgraded to AC3 very easy, if playing E-AC3 on PC is an issue.
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Not sure to understand, you mean the issue comes from my AV Receivers ?
Media Info Lite 0.7.65
this one is ok one my AV Receiver :
General
Complete name :hddvd_demo_1080p.mkv
Format : Matroska
Format version : Version 1
File size : 278 MiB
Duration : 2mn 1s
Overall bit rate : 19.2 Mbps
Encoded date : UTC 2007-04-07 03:28:47
Writing application : mkvmerge v2.0.2 ('You're My Flame') built on Feb 21 2007 23:40:55
Writing library : libebml v0.7.7 + libmatroska v0.8.1
Video
ID : 1
Format : VC-1
Format profile : Advanced@L3
Codec ID : V_MS/VFW/FOURCC / WVC1
Codec ID/Hint : Microsoft
Bit rate : 17.5 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Original frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Title : 1080p VC-1
Language : English
Default : Yes
Forced : No
Audio
ID : 2
Format : E-AC-3
Format/Info : Audio Coding 3
Format settings, Endianness : Big
Codec ID : A_EAC3
Duration : 2mn 1s
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel count : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 33ms
Stream size : 9.30 MiB (3%)
Title : Dolby Digital Plus 5.1 640kbps
Language : English
Default : No
Forced : No
This one doesn't display DD+ on my Av Receiver :
General
Complete name : Brave.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 9.40 GiB
Duration : 1h 34mn
Overall bit rate : 14.3 Mbps
Movie name : Brave
Encoded date : UTC 2010-02-22 21:41:31
Writing application : mkvmerge v5.9.0 ('On The Loose') built on Dec 9 2012 15:37:01
Writing library : libebml v1.3.0 + libmatroska v1.4.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 34mn
Bit rate : 10.9 Mbps
Width : 1 920 pixels
Height : 804 pixels
Display aspect ratio : 2.40:1
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) : 0.294
Stream size : 7.49 GiB (80%)
Title : brave
Writing library : x264 core 125 r2208 d9d2288
Encoding settings : cabac=1 / ref=5 / deblock=1:2:2 / analyse=0x3:0x113 / me=umh / subme=11 / psy=1 / psy_rd=0.98:0.08 / mixed_ref=1 / me_range=64 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=6,6 / fast_pskip=0 / chroma_qp_offset=-3 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=5 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=1 / weightp=2 / keyint=240 / keyint_min=22 / scenecut=40 / intra_refresh=0 / rc_lookahead=240 / rc=2pass / mbtree=1 / bitrate=10888 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=50000 / vbv_bufsize=50000 / nal_hrd=none / ip_ratio=1.40 / aq=2:0.90
Language : English
Default : Yes
Forced : Yes
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio #1
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_EAC3
Duration : 1h 34mn
Bit rate mode : Constant
Bit rate : 512 Kbps
Channel count : 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 : 345 MiB (4%)
Title : Audio French (VFF) E-AC3 (Enhanced AC3 = Dolby Digital Plus) 7.1 channels @ 896 Kbps cbr
Language : French
Default : Yes
Forced : Yes
Thks for your help -
Are you pretty sure that your AV Receiver Onkyo TX-NR509 is capable of decoding E-AC3 7.1 channels? Just to figure out you can try SPDIF input. Easiest way to inspect, Take second file which do not display DD+ to audio editor, inspect if it has 7.1 channels may be some muted. Stream Analysis for both E-AC3 streams for comparision will be time consuming and most boring. As a last option, you can try demux H264/AVC and E-AC3 streams, convert E-AC3 -> AC3 (5.1 ch @ 640 kbps) remux into mkv. I hope, your AVR alteast decodes video without audio in later case.
Last edited by enim; 14th Jan 2014 at 13:07.
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Just to be clear when I put this second file, I get sound from my speakers.
Enim I think you're right about my AV Receiver.
I just download all kind of Dolby HD coding (from http://www.demo-world.eu/trailers/high-definition-trailers.php)
DD+ 5.1
DD+ 7.1
TrueHD 5.1
TrueHD 7.1
And only DD+ 7.1 is displayed as DD on my Onkyo Receiver.
TrueHD 5.1 or 7.1 are displayed as Dolby TRUEHD.
So this was MediaInfo which make look in the wrong direction !
Is there any other tools to indicate audio/video file information ?
Thks -
not better with ffplay, it only print the DD+ CORE (in my case : Stream #0:1(fre): Audio: eac3, 48000 Hz, 5.1(side), fltp, 512 kb/s (default))
I try tsMuxeR_2.6.11 and this track is correctly identified : E-AC3 (DD+) Biterate:896Kbps (core 512Kbps) Sample Rate:48Khz Channels: 7.1
The only issue with tsMuxeR is that it can't open TRUEHD without CORE tracks.
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