[FFmpeg-trac] #7576(avcodec:new): Convert to AC3 fail to give a correct output

[FFmpeg]

#7576: Convert to AC3 fail to give a correct output
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             Reporter:  Sami32      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  ac3         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Sami32):

 Maybe i'm the one having misunderstood.
 >Stream #0:2[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side),
 fltp, 640 kb/s

 I don't see the use of such display, except if you like listen only a all
 long beeeeep song. It what i call incorrect. That said i could be wrong
 and it can have some use.

 Here is what i consider a correct display:

 {{{
 General
 ID                                       : 1 (0x1)
 Complete name                            :
 F:\_DEVELOPPEMENT_TOOLS\!MEDIA_TEST_FILES\UMS Video Testing Suite
 (20150121)\TESTS\dolby_EAC3_TrueHD_amaze_lossless-DWEU.m2ts
 Format                                   : BDAV
 Format/Info                              : Blu-ray Video
 File size                                : 173 MiB
 Duration                                 : 1 min 3 s
 Overall bit rate mode                    : Variable
 Overall bit rate                         : 22.9 Mb/s
 Maximum Overall bit rate                 : 35.5 Mb/s

 Video
 ID                                       : 4113 (0x1011)
 Menu ID                                  : 1 (0x1)
 Format                                   : AVC
 Format/Info                              : Advanced Video Codec
 Format profile                           : High at L4.1
 Format settings                          : CABAC / 4 Ref Frames
 Format settings, CABAC                   : Yes
 Format settings, RefFrames               : 4 frames
 Codec ID                                 : 27
 Duration                                 : 1 min 3 s
 Bit rate mode                            : Variable
 Bit rate                                 : 19.7 Mb/s
 Maximum bit rate                         : 40.0 Mb/s
 Width                                    : 1 920 pixels
 Height                                   : 1 080 pixels
 Display aspect ratio                     : 16:9
 Frame rate                               : 24.000 FPS
 Color space                              : YUV
 Chroma subsampling                       : 4:2:0
 Bit depth                                : 8 bits
 Scan type                                : Progressive
 Bits/(Pixel*Frame)                       : 0.395
 Stream size                              : 149 MiB (86%)
 Language                                 : English

 Audio #1
 ID                                       : 4352 (0x1100)
 Menu ID                                  : 1 (0x1)
 Format                                   : AC-3 MLP FBA 16-ch
 Format/Info                              : Audio Coding 3 + Meridian
 Lossless Packing FBA with 16-channel presentation
 Commercial name                          : Dolby TrueHD with Dolby Atmos
 Muxing mode                              : Stream extension
 Codec ID                                 : 131
 Duration                                 : 1 min 3 s
 Bit rate mode                            : Variable
 Bit rate                                 : 640 kb/s
 Maximum bit rate                         : 9 096 kb/s
 Channel(s)                               : 8 channels
 Channel layout                           : L R C LFE Ls Rs Lb Rb
 Sampling rate                            : 48.0 kHz
 Frame rate                               : 31.250 FPS (1536 SPF)
 Bit depth                                : 16 bits
 Compression mode                         : Lossy
 Stream size                              : 4.84 MiB (3%)
 Service kind                             : Complete Main
 Number of dynamic objects                : 15
 Bed channel count                        : 1 channel
 Bed channel configuration                : LFE

 Audio #2
 ID                                       : 4353 (0x1101)
 Menu ID                                  : 1 (0x1)
 Format                                   : E-AC-3
 Format/Info                              : Enhanced AC-3
 Commercial name                          : Dolby Digital Plus
 Format profile                           : Blu-ray Disc
 Muxing mode                              : Stream extension
 Codec ID                                 : 132
 Duration                                 : 1 min 3 s
 Bit rate mode                            : Constant
 Bit rate                                 : 1 664 kb/s
 Channel(s)                               : 8 channels
 Channel layout                           : L R C LFE Ls Rs Lb Rb
 Sampling rate                            : 48.0 kHz
 Frame rate                               : 31.250 FPS (1536 SPF)
 Compression mode                         : Lossy
 Stream size                              : 12.6 MiB (7%)
 Service kind                             : Complete Main
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7576#comment:5>
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