[FFmpeg-trac] #2689(undetermined:new): Set-top boxes show wrong Aspect Ratio on HD content

[FFmpeg]

#2689: Set-top boxes show wrong Aspect Ratio on HD content
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             Reporter:  jdachik01    |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  aspect       |               Resolution:
  mpeg2video mpegts                  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by fredt):

 Based on code analysis and looking at the ffmbc fix, the solution is to
 modify mpeg12enc.c

 When the aspect ratio equal exactly a valid mpeg2 aspect ratio, the wrong
 aspect ratio is sent in the aspect_ratio field in the mpeg sequence
 header.
 STB use the sequence header to display the right format on screen.

 The fix is to change line 267 in function mpeg1_encode_sequence_header:

             if (error < best_aspect_error) {
                 best_aspect_error    = error;
                 s->aspect_ratio_info = i;
             }
 To this:
             if (error <= best_aspect_error) {
                 best_aspect_error    = error;
                 s->aspect_ratio_info = i;
             }

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Ticket URL: <https://trac.ffmpeg.org/ticket/2689#comment:12>
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