[FFmpeg-trac] #11351(undetermined:new): Native AAC-enocoder doesn't create constant bitrate.

FFmpeg trac at avcodec.org
Fri Dec 13 13:43:17 EET 2024


#11351: Native AAC-enocoder doesn't create constant bitrate.
-------------------------------------+-------------------------------------
             Reporter:  maxmanus     |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  native aac   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 Neither of those produce true constant bitrate, you need
 -bit_rate_tolerance 0 option. b92af7b64e7acd015aea3ae1da2228c5a7e677bf

 >Output is then variable bitrate.

 it does decrease bitrate if the sound does not need needed amount of data,
 but bit_rate_tolerance 0  has bugs
 https://patchwork.ffmpeg.org/project/ffmpeg/patch/517a57ef18398a39952fcc1d02e51ef423cf80ae.1726262133.git.pav@iki.fi/
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Ticket URL: <https://trac.ffmpeg.org/ticket/11351#comment:3>
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