[FFmpeg-trac] #6581(avcodec:closed): ffmpeg refuses to process Indeo3 resolutions not a multiple of 4.

FFmpeg trac at avcodec.org
Thu Feb 25 22:04:40 EET 2021

#6581: ffmpeg refuses to process Indeo3 resolutions not a multiple of 4.
             Reporter:  Sgeo         |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:  fixed
             Keywords:  indeo3       |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |

Comment (by giwiniswut):

 Hello sorry for my absence. Today i updated my git remotes and while
 rebasing my ffmpeg hacks i noticed that you changed that constraint. Thank
 you very much for taking care of this ticket!

 I was holding off of sharing the input indeo3 files like you requested
 because the files i dealt with are not mine so i had asked the person that
 shared them with me for permission. Since they did not respond to that
 question i am sharing the files by my own judgement now as i'd say they
 are more or less public anyway because they were sent to me through a
 cloud drive link in a [comment on

 I will attach them to this ticket as well if possible.

 I am bringing this up again since as i understand your patch to ffmpeg
 master weakened the constraint so that it now only rejects uneven values;
 however, one of the videos i'm dealing with has a resolution of 312x203,

 What is the technical reason behind this constraint, seeing as i was able
 to convert the exact same rejected video with my hacked up ffmpeg build?
 FFmpeg automatically adjusted the resolution during conversion, so the
 video resolutions went from 182x182 to 184x184 and 312x203 to 312x204
 while converting the videos i dealt with from indeo3 to h264 which i had
 enabled with the `--enable-libx264` build option.

Ticket URL: <https://trac.ffmpeg.org/ticket/6581#comment:5>
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