[FFmpeg-trac] #5642(undetermined:new): Qmin Qmax with MPEG2 Encoding

FFmpeg trac at avcodec.org
Tue Jun 14 19:19:46 CEST 2016

#5642: Qmin Qmax with MPEG2 Encoding
             Reporter:               |                     Type:  defect
  smallishzulu                       |                 Priority:  normal
               Status:  new          |                  Version:
            Component:               |  unspecified
  undetermined                       |               Blocked By:
             Keywords:  qmin, qmax,  |  Reproduced by developer:  0
  mpeg2video                         |
             Blocking:               |
Analyzed by developer:  0            |

 I simply try to encode a video to MPEG2 with below command:

 ffmpeg -i ada-2016_06_06_15_45_39.ts -vcodec mpeg2video -minrate 1000k
 -maxrate 1000k -vb 1000k -bufsize 1000k -acodec mp2 -ac 2 -ab 128k -f
 mpets -muxrate 1250k -qmax 51 /tmp/out.ts

 Qmax never goes over 31. I noticed I can not change qmin and qmax values
 using -qmin & -qmax.

Ticket URL: <https://trac.ffmpeg.org/ticket/5642>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker

More information about the FFmpeg-trac mailing list