[FFmpeg-trac] #1069(undetermined:new): Canon Powershot playback / conversion

FFmpeg trac at avcodec.org
Wed Mar 21 21:44:29 CET 2012

#1069: Canon Powershot playback / conversion
             Reporter:  lennie  |                    Owner:
                 Type:  defect  |                   Status:  new
             Priority:  normal  |                Component:  undetermined
              Version:          |               Resolution:
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |

Comment (by lennie):

 It is difficult to tell how many frames are being shown with the Canon
 viewer/editor (it has about 1 second granularity in "seeking" and
 "status".  I can tell you that the artifacts tend to occur at the start of
 videos - but do have one clip where it happens near the end of the clip.
 Another clue is that this doesn't happen on many clips.  I shot about 1000
 clips of 5-20 seconds and only about 4-5 had artifacts like this.  I
 suspect that the Canon Powershot camera is using some fields/features
 which are not supported by ffmpeg/Mplayer as well as Quick time - I was
 very surprised when I used the Canon .MOV editor (and exported to an .AVI)
 that the video appeared normally (with no artifacts).  That is how I got
 the DVD authored but want to track down where the error is (and how the
 Lead Tools .MOV decoder doesn't have problems).  I also have a ticket with
 Canon support to see if the problem is on their side but wanted to see
 what the Open Source community could do to fix/explain the artifacts.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1069#comment:7>
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