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pcroland / deew

Dolby Encoding Engine Wrapper
https://deew.dev
MIT License
195 stars 20 forks source link

Smaller files than other commercial products #16

Closed tormento closed 2 years ago

tormento commented 2 years ago

I have tried to convert different audio files with dee(w) and other commercial products, such as TotalCode Studio and the last version of Adobe Audition that supports DD+.

dee(w) consistently creates smaller files. How can that be possible?

Mediainfo for dee(w) created file:

General
Complete name                  : F:\In\1_48 Solid state society\[jpn]dee(w).eac3
Format                         : E-AC-3
Format/Info                    : Enhanced AC-3
Commercial name                : Dolby Digital Plus
File size                      : 459 MiB
Duration                       : 1 h 40 min
Overall bit rate mode          : Constant
Overall bit rate               : 640 kb/s

Audio
Format                         : E-AC-3
Format/Info                    : Enhanced AC-3
Commercial name                : Dolby Digital Plus
Format settings                : Dolby Surround EX
Duration                       : 1 h 40 min
Bit rate mode                  : Constant
Bit rate                       : 640 kb/s
Channel(s)                     : 8 channels / 6 channels
Channel layout                 : L R C LFE Ls Rs Lb Rb / L R C LFE Ls Rs
Sampling rate                  : 48.0 kHz
Frame rate                     : 31.250 FPS (1536 SPF)
Compression mode               : Lossy
Stream size                    : 459 MiB (100%)
Service kind                   : Complete Main

Mediainfo for TotalCode Studio file:

General
Complete name                  : F:\In\1_48 Solid state society\[jpn]TotalCodeStudio.eac3
Format                         : E-AC-3
Format/Info                    : Enhanced AC-3
Commercial name                : Dolby Digital Plus
File size                      : 498 MiB
Duration                       : 1 h 48 min
Overall bit rate mode          : Constant
Overall bit rate               : 640 kb/s

Audio
Format                         : E-AC-3
Format/Info                    : Enhanced AC-3
Commercial name                : Dolby Digital Plus
Duration                       : 1 h 48 min
Bit rate mode                  : Constant
Bit rate                       : 640 kb/s
Channel(s)                     : 8 channels / 6 channels
Channel layout                 : L R C LFE Ls Rs Lb Rb / L R C LFE Ls Rs
Sampling rate                  : 48.0 kHz
Frame rate                     : 31.250 FPS (1536 SPF)
Compression mode               : Lossy
Stream size                    : 498 MiB (100%)
Service kind                   : Complete Main
pcroland commented 2 years ago

One file is shorter than the other.

tormento commented 2 years ago

@pcroland yep, correct, there must be something wrong transcoding with deew, as the correct lenght is 1:48.

The file is the very same I linked in the other issue about progress bar.