[FFmpeg-trac] #4754(avcodec:closed): dvbsub samples look very ugly

FFmpeg trac at avcodec.org
Thu Aug 6 02:22:06 CEST 2015


#4754: dvbsub samples look very ugly
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             Reporter:  cehoyos     |                    Owner:
                 Type:  defect      |                   Status:  closed
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:  fixed
             Keywords:  dvbsub      |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by miguelapg):

 Subtitles are positioned according to PAL dimensions by default, instead
 of placing them at bottom center as VLC or MPlayer do.

 Seems this was added at
 http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=1fc20af6af3ec31d0ee665557885b6c20c6d3686.

 Why VLC drop subtitles in the usual place (bottom center), and even scale
 subtitles to fit video dimension, and ffmpeg doesn't do it?

 I think that this feature is not finished if ffmpeg is not following the
 standards of video industry, as ffmpeg is also a reference in the video
 world.

 I have attached an screenshot to show how subtitles are placed using a
 common set of parameters (even recommended by ffmpeg guides) ...

 -filter_complex '[0:v][0:s:0]overlay[vid]' -map '[vid]' -map 0:a

 Regards,
 Mapg

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Ticket URL: <https://trac.ffmpeg.org/ticket/4754#comment:2>
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