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Adio Info showing different to Media Info
#1
I am just feeding back an observation.. its beyond minor but thought you might like to fix it at some point.

I have a bunch of files that according to MediaInfo have the following Audio settings:

ID                                      : 2
Format                                  : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                : A_AAC-2
Duration                                : 30 min 39 s
Bit rate                                : 317 kb/s
Channel(s)                              : 6 channels
Channel layout                          : C L R Ls Rs LFE
Sampling rate                            : 48.0 kHz
Frame rate                              : 46.875 FPS (1024 SPF)
Compression mode                        : Lossy
Stream size                              : 69.6 MiB (24%)
Language                                : English
Default                                  : Yes
Forced                                  : No


317kbs Bitrate is an odd number for sure, but thats what it is.... But according to Hybrid the Bitrate is 128kbs.

I have sent you logs from when I open this file.. If you want the file in question, just ask.

Jon
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#2
FFmpeg reported:
ID_DEMUXER=mkv
ID_VIDEO_FORMAT=avc1
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=1280
ID_VIDEO_HEIGHT=720
ID_VIDEO_FPS=59.940
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=MP4A
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=6
ID_START_TIME=0.00
ID_LENGTH=1839.21
ID_SEEKABLE=1
ID_CHAPTERS=3
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
dec_audio: Allocating 1536000 + 131072 = 1667072 bytes for output buffer.
FFmpeg's libavcodec audio codec
INFO: libavcodec "aac" init OK!
AUDIO: 48000 Hz, 6 ch, floatle, 128.0 kbit/1.39% (ratio: 16000->1152000)
Mplayer reports:
AUDIO: 48000 Hz, 6 ch, floatle, 128.0 kbit/1.39% (ratio: 16000->1152000)
ID_AUDIO_BITRATE=128000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=6
MediaInfo reports:
Audio
Count                                    : 280
Count of stream of this kind             : 1
Kind of stream                           : Audio
Kind of stream                           : Audio
Stream identifier                        : 0
StreamOrder                              : 1
ID                                       : 2
ID                                       : 2
Unique ID                                : 7351533584388041878
Format                                   : AAC
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Commercial name                          : AAC
Format_AdditionalFeatures                : LC
Codec ID                                 : A_AAC-2
Duration                                 : 1839210.000000
Duration                                 : 30 min 39 s
Duration                                 : 30 min 39 s 210 ms
Duration                                 : 30 min 39 s
Duration                                 : 00:30:39.210
Duration                                 : 00:30:34:15
Duration                                 : 00:30:39.210 (00:30:34:15)
Bit rate                                 : 317375
Bit rate                                 : 317 kb/s
Channel(s)                               : 6
Channel(s)                               : 6 channels
Channel positions                        : Front: L C R, Side: L R, LFE
Channel positions                        : 3/2/0.1
Channel layout                           : C L R Ls Rs LFE
Samples per frame                        : 1024
Sampling rate                            : 48000
Sampling rate                            : 48.0 kHz
Samples count                            : 88282080
Frame rate                               : 46.875
Frame rate                               : 46.875 FPS (1024 SPF)
Frame count                              : 86213
Compression mode                         : Lossy
Compression mode                         : Lossy
Delay                                    : 0
Delay                                    : 00:00:00.000
Delay, origin                            : Container
Delay, origin                            : Container
Delay relative to video                  : 0
Delay relative to video                  : 00:00:00.000
Stream size                              : 72964936
Stream size                              : 69.6 MiB (24%)
Stream size                              : 70 MiB
Stream size                              : 70 MiB
Stream size                              : 69.6 MiB
Stream size                              : 69.58 MiB
Stream size                              : 69.6 MiB (24%)
Proportion of this stream                : 0.24008
Language                                 : en
Language                                 : English
Language                                 : English
Language                                 : en
Language                                 : eng
Language                                 : en
Default                                  : Yes
Default                                  : Yes
Forced                                   : No
Hybrid simply doesn't change the bit rate since it already had one. Wink

I can probably write a workaround for it, would need a short sample to reproduce and fix the issue.

Cu Selur
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#3
Sample sent by email

I "cut" a 2 second clip and compressed the video right down to make it small enough to mail.. But Audio is untouched and clearly shows the issue.

Jon
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#4
Wrote a 'blind' workaround for it yesterday, which does seem to work.
-> try the dev version I send you a link to via PM

Cu Selur
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