[FFmpeg-trac] #3524(avcodec:new): FFmpeg MD5 output different with same data

FFmpeg trac at avcodec.org
Thu Apr 3 22:43:16 CEST 2014

#3524: FFmpeg MD5 output different with same data
             Reporter:  ahthovaikied  |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avcodec
              Version:  git-master    |               Resolution:
             Keywords:  aac           |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |

Comment (by jamal):

 Replying to [comment:8 ahthovaikied]:
 > Do you know if there is a way to compute the MD5 of the streams with
 FFmpeg '''before''' decoding? A full file checksum is not an option
 because I need to be able to select only some streams for the calculation.

 ./ffmpeg -i h264_720p_hp_3.1_600kbps_aac_mp3_dual_audio_harry_potter.mkv
 -vn -c:a copy -f md5 -
 Should give you the md5 of the aac stream as it is stored in the file,
 without decoding it.

Ticket URL: <https://trac.ffmpeg.org/ticket/3524#comment:9>
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