[FFmpeg-trac] #10403(undetermined:new): Audio sample rate adjustment for simple speed change

[FFmpeg]

#10403: Audio sample rate adjustment for simple speed change
-------------------------------------+-------------------------------------
             Reporter:  Noitarud     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Please correct me if I am wrong: if the audio sample rate is read at a
 different speed, I should get a different audio speed.

 I like the idea of the -c copy. But its use does not appear to extend to
 the alteration of playback speed. If I use the command as shown, it will
 copy the content and use original rate, no speed change.

 "C:\Program Files\GPAC\ffmpeg" -i INPUT44100.mp3 -c copy -ar 22050
 E:\slow.mp3

 I have noticed filter asetrate but don't filters necessitate
 recompression?

 Is there anything that can be done in a hex editor to the file to just
 cause the rate change? Just tell MP3 and/or AAC unless you feel like
 telling more.

 (Version 2014. No tickets since describing this I could see.)
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10403>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker