[FFmpeg-trac] #2312(undetermined:closed): AVI (Matrox-compatible) file doubling up in size

FFmpeg trac at avcodec.org
Thu Feb 28 23:04:21 CET 2013


#2312: AVI (Matrox-compatible) file doubling up in size
-------------------------------------+-------------------------------------
             Reporter:  wleo75       |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:  invalid
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * priority:  important => normal
 * resolution:   => invalid
 * status:  new => closed
 * component:  FFmpeg => undetermined
 * version:   => unspecified


Comment:

 Your input sample is high-bitrate MPEG2. It is possible to re-encode your
 sample so that the output file has less than 3% of the size of the input
 file, depending on the used codec and settings. (Unrelated but
 interesting: Even using highest quality MPEG-1 re-encoding, the size was
 still reduced to far below 10%.)
 dvvideo has a defined bit-rate (defined by the specification, not the
 FFmpeg developers) that cannot be changed. This bit-rate is (even) higher
 than the bit-rate of your input file.

 For future questions: Please remember that this is a bug tracker, not a
 support forum, see http://ffmpeg.org/contact.html for the ffmpeg-user
 mailing list.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2312#comment:2>
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