Opened 3 years ago

Closed 3 years ago

Last modified 3 years ago

#6351 closed defect (invalid)

encodec lossy audio LFE how to do not to process

Reported by: jhsxy2005 Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords: aac
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: yes


ffmpeg -i "F:\8.flac" -af "pan=7.1|c0=c0|c1=c1|c2=c2|c3=c3|c4=c4|c5=c5|c6=c6|c7=c7" "F:\8.wav"

ffmpeg -i "F:\8.flac" -af "pan=7.1|c0=c0|c1=c1|c2=c2|c3=c3|c4=c4|c5=c5|c6=c6|c7=c7" -c aac "F:\8.m4a"

ffmpeg -i "F:\8.flac" -af "pan=7.1|c0=c0|c1=c1|c2=c2|c3=c3|c4=c4|c5=c5|c6=c6|c7=c7" -c dca -strict -2 "F:\8.dts"

flac & wav,LFE is no process,but aac & dca is do EQ and down volume.
aac & dca,the eq is no same,dca is lower.

??? which set can do not to process LFE ???

Change History (4)

comment:1 Changed 3 years ago by jhsxy2005

there is audacity Plot Spectrum

comment:2 Changed 3 years ago by cehoyos

  • Keywords aac added

Please provide the (aac) command line you tested together with the complete, uncut console output to make this a valid ticket and please explain your use-case.

comment:3 Changed 3 years ago by richardpl

  • Resolution set to needs_more_info
  • Status changed from new to closed

comment:4 Changed 3 years ago by atomnuker

  • Analyzed by developer set
  • Reproduced by developer set
  • Resolution changed from needs_more_info to invalid

Cannot be fixed, pretty much all lossy codecs modify the LFE to make it easier to compress so this bug is unfixable.

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